* installing *source* package 'RcppStreams' ...
** package 'RcppStreams' successfully unpacked and MD5 sums checked
** using staged installation
** libs
using C++ compiler: 'g++.exe (GCC) 13.2.0'
using C++11
make[1]: Entering directory '/d/temp/RtmpAB9pBv/R.INSTALL743037db6eb/RcppStreams/src'
g++  -std=gnu++11 -I"D:/RCompile/recent/R-4.4.0/include" -DNDEBUG -I../inst/include/  -I'D:/RCompile/CRANpkg/lib/4.4/Rcpp/include' -I'D:/RCompile/CRANpkg/lib/4.4/BH/include'   -I"d:/rtools44/x86_64-w64-mingw32.static.posix/include"     -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c RcppExports.cpp -o RcppExports.o
g++  -std=gnu++11 -I"D:/RCompile/recent/R-4.4.0/include" -DNDEBUG -I../inst/include/  -I'D:/RCompile/CRANpkg/lib/4.4/Rcpp/include' -I'D:/RCompile/CRANpkg/lib/4.4/BH/include'   -I"d:/rtools44/x86_64-w64-mingw32.static.posix/include"     -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c common.cpp -o common.o
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/scoped_ptr.hpp:13,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:22,
                 from ../inst/include/graph.h:24,
                 from ../inst/include/engine.h:24,
                 from ../inst/include/streamulus.h:30,
                 from common.cpp:52:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/scoped_ptr.hpp:75:31: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
   75 |     explicit scoped_ptr( std::auto_ptr<T> p ) BOOST_SP_NOEXCEPT : px( p.release() )
      |                               ^~~~~~~~
In file included from D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/memory:78,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/opt_storage.hpp:11,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/archive_constructed.hpp:12,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/serialize_container.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/serialize_fca_container.hpp:12,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/unordered_set.hpp:17,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered_set.hpp:17,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:20:
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/na_assert.hpp:23,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/arg.hpp:25,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/placeholders.hpp:24,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/iterator/iterator_categories.hpp:16,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_traits.hpp:25,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:24:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:194:21: warning: unnecessary parentheses in declaration of 'assert_arg' [-Wparentheses]
  194 | failed ************ (Pred::************
      |                     ^~~~~~~~~~~~~~~~~~~
  195 |       assert_arg( void (*)(Pred), typename assert_arg_pred<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  196 |     );
      |     ~                
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:194:21: note: remove parentheses
  194 | failed ************ (Pred::************
      |                     ^~~~~~~~~~~~~~~~~~~
      |                     -
  195 |       assert_arg( void (*)(Pred), typename assert_arg_pred<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  196 |     );
      |     ~                
      |     -
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:199:21: warning: unnecessary parentheses in declaration of 'assert_not_arg' [-Wparentheses]
  199 | failed ************ (boost::mpl::not_<Pred>::************
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  200 |       assert_not_arg( void (*)(Pred), typename assert_arg_pred_not<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  201 |     );
      |     ~                
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:199:21: note: remove parentheses
  199 | failed ************ (boost::mpl::not_<Pred>::************
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                     -
  200 |       assert_not_arg( void (*)(Pred), typename assert_arg_pred_not<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  201 |     );
      |     ~                
      |     -
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:18,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/vector_property_map.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:598,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:27:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/detail/shared_count.hpp:361:33: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  361 |     explicit shared_count( std::auto_ptr<Y> & r ): pi_( new sp_counted_impl_p<Y>( r.get() ) )
      |                                 ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:251:65: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  251 | template< class T, class R > struct sp_enable_if_auto_ptr< std::auto_ptr< T >, R >
      |                                                                 ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:508:31: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  508 |     explicit shared_ptr( std::auto_ptr<Y> & r ): px(r.get()), pn()
      |                               ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:521:22: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  521 |     shared_ptr( std::auto_ptr<Y> && r ): px(r.get()), pn()
      |                      ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:604:34: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  604 |     shared_ptr & operator=( std::auto_ptr<Y> & r )
      |                                  ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:613:34: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  613 |     shared_ptr & operator=( std::auto_ptr<Y> && r )
      |                                  ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp: In member function 'boost::shared_ptr<T>& boost::shared_ptr<T>::operator=(std::auto_ptr<_Up>&&)':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:615:38: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  615 |         this_type( static_cast< std::auto_ptr<Y> && >( r ) ).swap( *this );
      |                                      ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/detail/decltype.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/context/default.hpp:31,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/context.hpp:13,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/proto.hpp:14,
                 from ../inst/include/strop.h:27,
                 from ../inst/include/transforms.h:27,
                 from ../inst/include/grammar.h:24,
                 from ../inst/include/engine.h:26:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/get_pointer.hpp: At global scope:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/get_pointer.hpp:48:40: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
   48 | template<class T> T * get_pointer(std::auto_ptr<T> const& p)
      |                                        ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from ../inst/include/strop.h:30:
../inst/include/strop_stream_producer.h: In member function 'void streamulus::StropStreamProducer<R>::Output(const R&)':
../inst/include/strop_stream_producer.h:50:24: warning: invalid use of incomplete type 'class streamulus::Engine'
   50 |             GetEngine()->template Output<R>(mVertexDescriptor,value);
      |                        ^~
In file included from ../inst/include/engine.h:25:
../inst/include/strop_base.h:26:11: note: forward declaration of 'class streamulus::Engine'
   26 |     class Engine;
      |           ^~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/assert.hpp:35,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:19:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:31,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:20:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::EdgeListGraph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::EdgeListGraph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/integral_wrapper.hpp:22,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/int.hpp:20,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/lambda_fwd.hpp:23,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/na_spec.hpp:18,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/if.hpp:19,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_traits.hpp:17:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:15: note: in a call to non-static member function 'boost::concepts::EdgeListGraphConcept<streamulus::Graph>::~EdgeListGraphConcept()'
  226 | BOOST_concept(EdgeListGraph, (G)) : Graph< G >
      |               ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1: note: in expansion of macro 'BOOST_concept'
  226 | BOOST_concept(EdgeListGraph, (G)) : Graph< G >
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
In file included from ../inst/include/engine.h:31:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:39:10: note: in a call to non-static member function 'void boost::DFSVisitorConcept<Visitor, Graph>::constraints() [with Visitor = streamulus::Engine::TopologicalSortVisitor; Graph = streamulus::Graph]'
   39 |     void constraints()
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   66 |     BOOST_CONCEPT_USAGE(Graph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::EdgeListGraph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::EdgeListGraph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EdgeListGraph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5:   required from 'struct boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3:   required from 'struct boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:41:9:   required from 'void boost::DFSVisitorConcept<Visitor, Graph>::constraints() [with Visitor = streamulus::Engine::TopologicalSortVisitor; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:17: note: in a call to non-static member function 'boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>::~CopyConstructibleConcept()'
  165 |   BOOST_concept(CopyConstructible,(TT))
      |                 ^~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3: note: in expansion of macro 'BOOST_concept'
  165 |   BOOST_concept(CopyConstructible,(TT))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::IncidenceGraph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5:   required from 'struct boost::concepts::IncidenceGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'struct boost::concepts::IncidenceGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::IncidenceGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::IncidenceGraph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:15: note: in a call to non-static member function 'boost::concepts::IncidenceGraphConcept<streamulus::Graph>::~IncidenceGraphConcept()'
   75 | BOOST_concept(IncidenceGraph, (G)) : Graph< G >
      |               ^~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1: note: in expansion of macro 'BOOST_concept'
   75 | BOOST_concept(IncidenceGraph, (G)) : Graph< G >
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:205:10: note: in a call to non-static member function 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  205 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::ColorValue<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::ColorValue<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:15: note: in a call to non-static member function 'boost::concepts::ColorValueConcept<boost::default_color_type>::~ColorValueConcept()'
  502 | BOOST_concept(ColorValue, (C))
      |               ^~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1: note: in expansion of macro 'BOOST_concept'
  502 | BOOST_concept(ColorValue, (C))
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::edge_list_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5:   required from 'struct boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3:   required from 'struct boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::CopyConstructible<TT>::~CopyConstructible() [with TT = streamulus::Engine::TopologicalSortVisitor]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  167 |     BOOST_CONCEPT_USAGE(CopyConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::IncidenceGraph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::IncidenceGraph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5:   required from 'struct boost::concepts::IncidenceGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'struct boost::concepts::IncidenceGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::IncidenceGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   87 |     BOOST_CONCEPT_USAGE(IncidenceGraph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:206:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:147:10: note: in a call to non-static member function 'void boost::ReadablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  147 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:207:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:179:10: note: in a call to non-static member function 'void boost::WritablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  179 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:208:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::ColorValue<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::ColorValue<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::ColorValue<C>::~ColorValue() [with C = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  505 |     BOOST_CONCEPT_USAGE(ColorValue)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DefaultConstructible<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:68:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::DefaultConstructible<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:68:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::EqualityComparable<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:69:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::EqualityComparable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:69:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Assignable<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:70:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Assignable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:70:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::edge_list_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::algorithm::FinderConcept<boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>, __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:98:13:   required from 'void boost::algorithm::find_format_all(SequenceT&, FinderT, FormatterT) [with SequenceT = std::__cxx11::basic_string<char>; FinderT = detail::first_finderF<const char*, is_equal>; FormatterT = detail::const_formatF<boost::iterator_range<const char*> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:652:48:   required from 'void boost::algorithm::replace_all(SequenceT&, const Range1T&, const Range2T&) [with SequenceT = std::__cxx11::basic_string<char>; Range1T = char [2]; Range2T = char [3]]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:71:38:   required from 'std::string boost::escape_dot_string(const T&) [with T = std::__cxx11::basic_string<char>; std::string = std::__cxx11::basic_string<char>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:270:54:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:21,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:22,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:34,
                 from ../inst/include/engine.h:30:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/concept.hpp:40:18: note: in a call to non-static member function 'void boost::algorithm::FinderConcept<FinderT, IteratorT>::constraints() [with FinderT = boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>; IteratorT = __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >]'
   40 |             void constraints()
      |                  ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::algorithm::FormatterConcept<boost::algorithm::detail::const_formatF<boost::iterator_range<const char*> >, boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>, __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:103:13:   required from 'void boost::algorithm::find_format_all(SequenceT&, FinderT, FormatterT) [with SequenceT = std::__cxx11::basic_string<char>; FinderT = detail::first_finderF<const char*, is_equal>; FormatterT = detail::const_formatF<boost::iterator_range<const char*> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:652:48:   required from 'void boost::algorithm::replace_all(SequenceT&, const Range1T&, const Range2T&) [with SequenceT = std::__cxx11::basic_string<char>; Range1T = char [2]; Range2T = char [3]]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:71:38:   required from 'std::string boost::escape_dot_string(const T&) [with T = std::__cxx11::basic_string<char>; std::string = std::__cxx11::basic_string<char>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:270:54:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/concept.hpp:65:18: note: in a call to non-static member function 'void boost::algorithm::FormatterConcept<FormatterT, FinderT, IteratorT>::constraints() [with FormatterT = boost::algorithm::detail::const_formatF<boost::iterator_range<const char*> >; FinderT = boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>; IteratorT = __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >]'
   65 |             void constraints()
      |                  ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:93:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:93:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::incidence_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 11 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:148:7:   required from 'void boost::ReadablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:206:7:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 11 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:180:7:   required from 'void boost::WritablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:207:7:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 7 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::read_write_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::incidence_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 12 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::readable_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 12 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::writable_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::SignedInteger<long long int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:514:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:109:22: note: in a call to non-static member function 'boost::SignedInteger<long long int>::~SignedInteger()'
  109 |   template <> struct SignedInteger< ::boost::long_long_type> {};
      |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 7 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
g++  -std=gnu++11 -I"D:/RCompile/recent/R-4.4.0/include" -DNDEBUG -I../inst/include/  -I'D:/RCompile/CRANpkg/lib/4.4/Rcpp/include' -I'D:/RCompile/CRANpkg/lib/4.4/BH/include'   -I"d:/rtools44/x86_64-w64-mingw32.static.posix/include"     -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c hello.cpp -o hello.o
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/scoped_ptr.hpp:13,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:22,
                 from ../inst/include/graph.h:24,
                 from ../inst/include/engine.h:24,
                 from ../inst/include/streamulus.h:30,
                 from hello.cpp:47:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/scoped_ptr.hpp:75:31: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
   75 |     explicit scoped_ptr( std::auto_ptr<T> p ) BOOST_SP_NOEXCEPT : px( p.release() )
      |                               ^~~~~~~~
In file included from D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/memory:78,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/opt_storage.hpp:11,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/archive_constructed.hpp:12,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/serialize_container.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/serialize_fca_container.hpp:12,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/unordered_set.hpp:17,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered_set.hpp:17,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:20:
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/na_assert.hpp:23,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/arg.hpp:25,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/placeholders.hpp:24,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/iterator/iterator_categories.hpp:16,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_traits.hpp:25,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:24:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:194:21: warning: unnecessary parentheses in declaration of 'assert_arg' [-Wparentheses]
  194 | failed ************ (Pred::************
      |                     ^~~~~~~~~~~~~~~~~~~
  195 |       assert_arg( void (*)(Pred), typename assert_arg_pred<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  196 |     );
      |     ~                
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:194:21: note: remove parentheses
  194 | failed ************ (Pred::************
      |                     ^~~~~~~~~~~~~~~~~~~
      |                     -
  195 |       assert_arg( void (*)(Pred), typename assert_arg_pred<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  196 |     );
      |     ~                
      |     -
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:199:21: warning: unnecessary parentheses in declaration of 'assert_not_arg' [-Wparentheses]
  199 | failed ************ (boost::mpl::not_<Pred>::************
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  200 |       assert_not_arg( void (*)(Pred), typename assert_arg_pred_not<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  201 |     );
      |     ~                
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:199:21: note: remove parentheses
  199 | failed ************ (boost::mpl::not_<Pred>::************
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                     -
  200 |       assert_not_arg( void (*)(Pred), typename assert_arg_pred_not<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  201 |     );
      |     ~                
      |     -
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:18,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/vector_property_map.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:598,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:27:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/detail/shared_count.hpp:361:33: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  361 |     explicit shared_count( std::auto_ptr<Y> & r ): pi_( new sp_counted_impl_p<Y>( r.get() ) )
      |                                 ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:251:65: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  251 | template< class T, class R > struct sp_enable_if_auto_ptr< std::auto_ptr< T >, R >
      |                                                                 ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:508:31: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  508 |     explicit shared_ptr( std::auto_ptr<Y> & r ): px(r.get()), pn()
      |                               ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:521:22: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  521 |     shared_ptr( std::auto_ptr<Y> && r ): px(r.get()), pn()
      |                      ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:604:34: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  604 |     shared_ptr & operator=( std::auto_ptr<Y> & r )
      |                                  ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:613:34: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  613 |     shared_ptr & operator=( std::auto_ptr<Y> && r )
      |                                  ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp: In member function 'boost::shared_ptr<T>& boost::shared_ptr<T>::operator=(std::auto_ptr<_Up>&&)':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:615:38: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  615 |         this_type( static_cast< std::auto_ptr<Y> && >( r ) ).swap( *this );
      |                                      ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/detail/decltype.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/context/default.hpp:31,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/context.hpp:13,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/proto.hpp:14,
                 from ../inst/include/strop.h:27,
                 from ../inst/include/transforms.h:27,
                 from ../inst/include/grammar.h:24,
                 from ../inst/include/engine.h:26:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/get_pointer.hpp: At global scope:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/get_pointer.hpp:48:40: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
   48 | template<class T> T * get_pointer(std::auto_ptr<T> const& p)
      |                                        ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from ../inst/include/strop.h:30:
../inst/include/strop_stream_producer.h: In member function 'void streamulus::StropStreamProducer<R>::Output(const R&)':
../inst/include/strop_stream_producer.h:50:24: warning: invalid use of incomplete type 'class streamulus::Engine'
   50 |             GetEngine()->template Output<R>(mVertexDescriptor,value);
      |                        ^~
In file included from ../inst/include/engine.h:25:
../inst/include/strop_base.h:26:11: note: forward declaration of 'class streamulus::Engine'
   26 |     class Engine;
      |           ^~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/assert.hpp:35,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:19:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:31,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:20:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::EdgeListGraph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::EdgeListGraph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/integral_wrapper.hpp:22,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/int.hpp:20,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/lambda_fwd.hpp:23,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/na_spec.hpp:18,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/if.hpp:19,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_traits.hpp:17:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:15: note: in a call to non-static member function 'boost::concepts::EdgeListGraphConcept<streamulus::Graph>::~EdgeListGraphConcept()'
  226 | BOOST_concept(EdgeListGraph, (G)) : Graph< G >
      |               ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1: note: in expansion of macro 'BOOST_concept'
  226 | BOOST_concept(EdgeListGraph, (G)) : Graph< G >
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
In file included from ../inst/include/engine.h:31:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:39:10: note: in a call to non-static member function 'void boost::DFSVisitorConcept<Visitor, Graph>::constraints() [with Visitor = streamulus::Engine::TopologicalSortVisitor; Graph = streamulus::Graph]'
   39 |     void constraints()
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   66 |     BOOST_CONCEPT_USAGE(Graph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::EdgeListGraph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::EdgeListGraph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EdgeListGraph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5:   required from 'struct boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3:   required from 'struct boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:41:9:   required from 'void boost::DFSVisitorConcept<Visitor, Graph>::constraints() [with Visitor = streamulus::Engine::TopologicalSortVisitor; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:17: note: in a call to non-static member function 'boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>::~CopyConstructibleConcept()'
  165 |   BOOST_concept(CopyConstructible,(TT))
      |                 ^~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3: note: in expansion of macro 'BOOST_concept'
  165 |   BOOST_concept(CopyConstructible,(TT))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::IncidenceGraph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5:   required from 'struct boost::concepts::IncidenceGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'struct boost::concepts::IncidenceGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::IncidenceGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::IncidenceGraph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:15: note: in a call to non-static member function 'boost::concepts::IncidenceGraphConcept<streamulus::Graph>::~IncidenceGraphConcept()'
   75 | BOOST_concept(IncidenceGraph, (G)) : Graph< G >
      |               ^~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1: note: in expansion of macro 'BOOST_concept'
   75 | BOOST_concept(IncidenceGraph, (G)) : Graph< G >
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:205:10: note: in a call to non-static member function 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  205 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::ColorValue<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::ColorValue<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:15: note: in a call to non-static member function 'boost::concepts::ColorValueConcept<boost::default_color_type>::~ColorValueConcept()'
  502 | BOOST_concept(ColorValue, (C))
      |               ^~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1: note: in expansion of macro 'BOOST_concept'
  502 | BOOST_concept(ColorValue, (C))
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::edge_list_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5:   required from 'struct boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3:   required from 'struct boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::CopyConstructible<TT>::~CopyConstructible() [with TT = streamulus::Engine::TopologicalSortVisitor]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  167 |     BOOST_CONCEPT_USAGE(CopyConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::IncidenceGraph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::IncidenceGraph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5:   required from 'struct boost::concepts::IncidenceGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'struct boost::concepts::IncidenceGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::IncidenceGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   87 |     BOOST_CONCEPT_USAGE(IncidenceGraph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:206:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:147:10: note: in a call to non-static member function 'void boost::ReadablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  147 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:207:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:179:10: note: in a call to non-static member function 'void boost::WritablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  179 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:208:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::ColorValue<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::ColorValue<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::ColorValue<C>::~ColorValue() [with C = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  505 |     BOOST_CONCEPT_USAGE(ColorValue)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DefaultConstructible<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:68:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::DefaultConstructible<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:68:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::EqualityComparable<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:69:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::EqualityComparable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:69:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Assignable<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:70:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Assignable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:70:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::edge_list_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::algorithm::FinderConcept<boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>, __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:98:13:   required from 'void boost::algorithm::find_format_all(SequenceT&, FinderT, FormatterT) [with SequenceT = std::__cxx11::basic_string<char>; FinderT = detail::first_finderF<const char*, is_equal>; FormatterT = detail::const_formatF<boost::iterator_range<const char*> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:652:48:   required from 'void boost::algorithm::replace_all(SequenceT&, const Range1T&, const Range2T&) [with SequenceT = std::__cxx11::basic_string<char>; Range1T = char [2]; Range2T = char [3]]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:71:38:   required from 'std::string boost::escape_dot_string(const T&) [with T = std::__cxx11::basic_string<char>; std::string = std::__cxx11::basic_string<char>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:270:54:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:21,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:22,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:34,
                 from ../inst/include/engine.h:30:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/concept.hpp:40:18: note: in a call to non-static member function 'void boost::algorithm::FinderConcept<FinderT, IteratorT>::constraints() [with FinderT = boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>; IteratorT = __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >]'
   40 |             void constraints()
      |                  ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::algorithm::FormatterConcept<boost::algorithm::detail::const_formatF<boost::iterator_range<const char*> >, boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>, __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:103:13:   required from 'void boost::algorithm::find_format_all(SequenceT&, FinderT, FormatterT) [with SequenceT = std::__cxx11::basic_string<char>; FinderT = detail::first_finderF<const char*, is_equal>; FormatterT = detail::const_formatF<boost::iterator_range<const char*> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:652:48:   required from 'void boost::algorithm::replace_all(SequenceT&, const Range1T&, const Range2T&) [with SequenceT = std::__cxx11::basic_string<char>; Range1T = char [2]; Range2T = char [3]]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:71:38:   required from 'std::string boost::escape_dot_string(const T&) [with T = std::__cxx11::basic_string<char>; std::string = std::__cxx11::basic_string<char>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:270:54:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/concept.hpp:65:18: note: in a call to non-static member function 'void boost::algorithm::FormatterConcept<FormatterT, FinderT, IteratorT>::constraints() [with FormatterT = boost::algorithm::detail::const_formatF<boost::iterator_range<const char*> >; FinderT = boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>; IteratorT = __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >]'
   65 |             void constraints()
      |                  ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:93:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:93:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::incidence_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 11 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:148:7:   required from 'void boost::ReadablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:206:7:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 11 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:180:7:   required from 'void boost::WritablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:207:7:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 7 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::read_write_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::incidence_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 12 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::readable_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 12 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::writable_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::SignedInteger<long long int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:514:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:109:22: note: in a call to non-static member function 'boost::SignedInteger<long long int>::~SignedInteger()'
  109 |   template <> struct SignedInteger< ::boost::long_long_type> {};
      |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 7 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
g++  -std=gnu++11 -I"D:/RCompile/recent/R-4.4.0/include" -DNDEBUG -I../inst/include/  -I'D:/RCompile/CRANpkg/lib/4.4/Rcpp/include' -I'D:/RCompile/CRANpkg/lib/4.4/BH/include'   -I"d:/rtools44/x86_64-w64-mingw32.static.posix/include"     -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c movavg.cpp -o movavg.o
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/scoped_ptr.hpp:13,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:22,
                 from ../inst/include/graph.h:24,
                 from ../inst/include/engine.h:24,
                 from ../inst/include/streamulus.h:30,
                 from movavg.cpp:28:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/scoped_ptr.hpp:75:31: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
   75 |     explicit scoped_ptr( std::auto_ptr<T> p ) BOOST_SP_NOEXCEPT : px( p.release() )
      |                               ^~~~~~~~
In file included from D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/memory:78,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/opt_storage.hpp:11,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/archive_constructed.hpp:12,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/serialize_container.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/serialize_fca_container.hpp:12,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/unordered_set.hpp:17,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered_set.hpp:17,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:20:
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/na_assert.hpp:23,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/arg.hpp:25,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/placeholders.hpp:24,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/iterator/iterator_categories.hpp:16,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_traits.hpp:25,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:24:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:194:21: warning: unnecessary parentheses in declaration of 'assert_arg' [-Wparentheses]
  194 | failed ************ (Pred::************
      |                     ^~~~~~~~~~~~~~~~~~~
  195 |       assert_arg( void (*)(Pred), typename assert_arg_pred<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  196 |     );
      |     ~                
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:194:21: note: remove parentheses
  194 | failed ************ (Pred::************
      |                     ^~~~~~~~~~~~~~~~~~~
      |                     -
  195 |       assert_arg( void (*)(Pred), typename assert_arg_pred<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  196 |     );
      |     ~                
      |     -
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:199:21: warning: unnecessary parentheses in declaration of 'assert_not_arg' [-Wparentheses]
  199 | failed ************ (boost::mpl::not_<Pred>::************
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  200 |       assert_not_arg( void (*)(Pred), typename assert_arg_pred_not<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  201 |     );
      |     ~                
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:199:21: note: remove parentheses
  199 | failed ************ (boost::mpl::not_<Pred>::************
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                     -
  200 |       assert_not_arg( void (*)(Pred), typename assert_arg_pred_not<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  201 |     );
      |     ~                
      |     -
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:18,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/vector_property_map.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:598,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:27:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/detail/shared_count.hpp:361:33: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  361 |     explicit shared_count( std::auto_ptr<Y> & r ): pi_( new sp_counted_impl_p<Y>( r.get() ) )
      |                                 ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:251:65: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  251 | template< class T, class R > struct sp_enable_if_auto_ptr< std::auto_ptr< T >, R >
      |                                                                 ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:508:31: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  508 |     explicit shared_ptr( std::auto_ptr<Y> & r ): px(r.get()), pn()
      |                               ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:521:22: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  521 |     shared_ptr( std::auto_ptr<Y> && r ): px(r.get()), pn()
      |                      ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:604:34: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  604 |     shared_ptr & operator=( std::auto_ptr<Y> & r )
      |                                  ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:613:34: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  613 |     shared_ptr & operator=( std::auto_ptr<Y> && r )
      |                                  ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp: In member function 'boost::shared_ptr<T>& boost::shared_ptr<T>::operator=(std::auto_ptr<_Up>&&)':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:615:38: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  615 |         this_type( static_cast< std::auto_ptr<Y> && >( r ) ).swap( *this );
      |                                      ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/detail/decltype.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/context/default.hpp:31,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/context.hpp:13,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/proto.hpp:14,
                 from ../inst/include/strop.h:27,
                 from ../inst/include/transforms.h:27,
                 from ../inst/include/grammar.h:24,
                 from ../inst/include/engine.h:26:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/get_pointer.hpp: At global scope:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/get_pointer.hpp:48:40: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
   48 | template<class T> T * get_pointer(std::auto_ptr<T> const& p)
      |                                        ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from ../inst/include/strop.h:30:
../inst/include/strop_stream_producer.h: In member function 'void streamulus::StropStreamProducer<R>::Output(const R&)':
../inst/include/strop_stream_producer.h:50:24: warning: invalid use of incomplete type 'class streamulus::Engine'
   50 |             GetEngine()->template Output<R>(mVertexDescriptor,value);
      |                        ^~
In file included from ../inst/include/engine.h:25:
../inst/include/strop_base.h:26:11: note: forward declaration of 'class streamulus::Engine'
   26 |     class Engine;
      |           ^~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/assert.hpp:35,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:19:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:31,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:20:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::EdgeListGraph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::EdgeListGraph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/integral_wrapper.hpp:22,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/int.hpp:20,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/lambda_fwd.hpp:23,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/na_spec.hpp:18,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/if.hpp:19,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_traits.hpp:17:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:15: note: in a call to non-static member function 'boost::concepts::EdgeListGraphConcept<streamulus::Graph>::~EdgeListGraphConcept()'
  226 | BOOST_concept(EdgeListGraph, (G)) : Graph< G >
      |               ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1: note: in expansion of macro 'BOOST_concept'
  226 | BOOST_concept(EdgeListGraph, (G)) : Graph< G >
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
In file included from ../inst/include/engine.h:31:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:39:10: note: in a call to non-static member function 'void boost::DFSVisitorConcept<Visitor, Graph>::constraints() [with Visitor = streamulus::Engine::TopologicalSortVisitor; Graph = streamulus::Graph]'
   39 |     void constraints()
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   66 |     BOOST_CONCEPT_USAGE(Graph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::EdgeListGraph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::EdgeListGraph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EdgeListGraph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5:   required from 'struct boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3:   required from 'struct boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:41:9:   required from 'void boost::DFSVisitorConcept<Visitor, Graph>::constraints() [with Visitor = streamulus::Engine::TopologicalSortVisitor; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:17: note: in a call to non-static member function 'boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>::~CopyConstructibleConcept()'
  165 |   BOOST_concept(CopyConstructible,(TT))
      |                 ^~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3: note: in expansion of macro 'BOOST_concept'
  165 |   BOOST_concept(CopyConstructible,(TT))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::IncidenceGraph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5:   required from 'struct boost::concepts::IncidenceGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'struct boost::concepts::IncidenceGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::IncidenceGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::IncidenceGraph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:15: note: in a call to non-static member function 'boost::concepts::IncidenceGraphConcept<streamulus::Graph>::~IncidenceGraphConcept()'
   75 | BOOST_concept(IncidenceGraph, (G)) : Graph< G >
      |               ^~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1: note: in expansion of macro 'BOOST_concept'
   75 | BOOST_concept(IncidenceGraph, (G)) : Graph< G >
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:205:10: note: in a call to non-static member function 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  205 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::ColorValue<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::ColorValue<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:15: note: in a call to non-static member function 'boost::concepts::ColorValueConcept<boost::default_color_type>::~ColorValueConcept()'
  502 | BOOST_concept(ColorValue, (C))
      |               ^~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1: note: in expansion of macro 'BOOST_concept'
  502 | BOOST_concept(ColorValue, (C))
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::edge_list_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5:   required from 'struct boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3:   required from 'struct boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::CopyConstructible<TT>::~CopyConstructible() [with TT = streamulus::Engine::TopologicalSortVisitor]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  167 |     BOOST_CONCEPT_USAGE(CopyConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::IncidenceGraph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::IncidenceGraph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5:   required from 'struct boost::concepts::IncidenceGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'struct boost::concepts::IncidenceGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::IncidenceGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   87 |     BOOST_CONCEPT_USAGE(IncidenceGraph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:206:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:147:10: note: in a call to non-static member function 'void boost::ReadablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  147 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:207:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:179:10: note: in a call to non-static member function 'void boost::WritablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  179 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:208:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::ColorValue<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::ColorValue<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::ColorValue<C>::~ColorValue() [with C = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  505 |     BOOST_CONCEPT_USAGE(ColorValue)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DefaultConstructible<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:68:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::DefaultConstructible<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:68:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::EqualityComparable<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:69:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::EqualityComparable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:69:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Assignable<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:70:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Assignable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:70:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::edge_list_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::algorithm::FinderConcept<boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>, __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:98:13:   required from 'void boost::algorithm::find_format_all(SequenceT&, FinderT, FormatterT) [with SequenceT = std::__cxx11::basic_string<char>; FinderT = detail::first_finderF<const char*, is_equal>; FormatterT = detail::const_formatF<boost::iterator_range<const char*> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:652:48:   required from 'void boost::algorithm::replace_all(SequenceT&, const Range1T&, const Range2T&) [with SequenceT = std::__cxx11::basic_string<char>; Range1T = char [2]; Range2T = char [3]]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:71:38:   required from 'std::string boost::escape_dot_string(const T&) [with T = std::__cxx11::basic_string<char>; std::string = std::__cxx11::basic_string<char>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:270:54:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:21,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:22,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:34,
                 from ../inst/include/engine.h:30:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/concept.hpp:40:18: note: in a call to non-static member function 'void boost::algorithm::FinderConcept<FinderT, IteratorT>::constraints() [with FinderT = boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>; IteratorT = __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >]'
   40 |             void constraints()
      |                  ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::algorithm::FormatterConcept<boost::algorithm::detail::const_formatF<boost::iterator_range<const char*> >, boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>, __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:103:13:   required from 'void boost::algorithm::find_format_all(SequenceT&, FinderT, FormatterT) [with SequenceT = std::__cxx11::basic_string<char>; FinderT = detail::first_finderF<const char*, is_equal>; FormatterT = detail::const_formatF<boost::iterator_range<const char*> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:652:48:   required from 'void boost::algorithm::replace_all(SequenceT&, const Range1T&, const Range2T&) [with SequenceT = std::__cxx11::basic_string<char>; Range1T = char [2]; Range2T = char [3]]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:71:38:   required from 'std::string boost::escape_dot_string(const T&) [with T = std::__cxx11::basic_string<char>; std::string = std::__cxx11::basic_string<char>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:270:54:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/concept.hpp:65:18: note: in a call to non-static member function 'void boost::algorithm::FormatterConcept<FormatterT, FinderT, IteratorT>::constraints() [with FormatterT = boost::algorithm::detail::const_formatF<boost::iterator_range<const char*> >; FinderT = boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>; IteratorT = __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >]'
   65 |             void constraints()
      |                  ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:93:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:93:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::incidence_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 11 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:148:7:   required from 'void boost::ReadablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:206:7:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 11 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:180:7:   required from 'void boost::WritablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:207:7:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 7 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::read_write_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::incidence_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 12 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::readable_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 12 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::writable_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::SignedInteger<long long int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:514:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:109:22: note: in a call to non-static member function 'boost::SignedInteger<long long int>::~SignedInteger()'
  109 |   template <> struct SignedInteger< ::boost::long_long_type> {};
      |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 7 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
g++  -std=gnu++11 -I"D:/RCompile/recent/R-4.4.0/include" -DNDEBUG -I../inst/include/  -I'D:/RCompile/CRANpkg/lib/4.4/Rcpp/include' -I'D:/RCompile/CRANpkg/lib/4.4/BH/include'   -I"d:/rtools44/x86_64-w64-mingw32.static.posix/include"     -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c sliding.cpp -o sliding.o
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/scoped_ptr.hpp:13,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:22,
                 from ../inst/include/graph.h:24,
                 from ../inst/include/engine.h:24,
                 from ../inst/include/streamulus.h:30,
                 from sliding.cpp:27:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/scoped_ptr.hpp:75:31: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
   75 |     explicit scoped_ptr( std::auto_ptr<T> p ) BOOST_SP_NOEXCEPT : px( p.release() )
      |                               ^~~~~~~~
In file included from D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/memory:78,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/opt_storage.hpp:11,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/archive_constructed.hpp:12,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/serialize_container.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/detail/serialize_fca_container.hpp:12,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered/unordered_set.hpp:17,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/unordered_set.hpp:17,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:20:
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/na_assert.hpp:23,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/arg.hpp:25,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/placeholders.hpp:24,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/iterator/iterator_categories.hpp:16,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_traits.hpp:25,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:24:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:194:21: warning: unnecessary parentheses in declaration of 'assert_arg' [-Wparentheses]
  194 | failed ************ (Pred::************
      |                     ^~~~~~~~~~~~~~~~~~~
  195 |       assert_arg( void (*)(Pred), typename assert_arg_pred<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  196 |     );
      |     ~                
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:194:21: note: remove parentheses
  194 | failed ************ (Pred::************
      |                     ^~~~~~~~~~~~~~~~~~~
      |                     -
  195 |       assert_arg( void (*)(Pred), typename assert_arg_pred<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  196 |     );
      |     ~                
      |     -
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:199:21: warning: unnecessary parentheses in declaration of 'assert_not_arg' [-Wparentheses]
  199 | failed ************ (boost::mpl::not_<Pred>::************
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  200 |       assert_not_arg( void (*)(Pred), typename assert_arg_pred_not<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  201 |     );
      |     ~                
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/assert.hpp:199:21: note: remove parentheses
  199 | failed ************ (boost::mpl::not_<Pred>::************
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                     -
  200 |       assert_not_arg( void (*)(Pred), typename assert_arg_pred_not<Pred>::type )
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  201 |     );
      |     ~                
      |     -
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:18,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/vector_property_map.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:598,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/adjacency_list.hpp:27:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/detail/shared_count.hpp:361:33: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  361 |     explicit shared_count( std::auto_ptr<Y> & r ): pi_( new sp_counted_impl_p<Y>( r.get() ) )
      |                                 ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:251:65: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  251 | template< class T, class R > struct sp_enable_if_auto_ptr< std::auto_ptr< T >, R >
      |                                                                 ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:508:31: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  508 |     explicit shared_ptr( std::auto_ptr<Y> & r ): px(r.get()), pn()
      |                               ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:521:22: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  521 |     shared_ptr( std::auto_ptr<Y> && r ): px(r.get()), pn()
      |                      ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:604:34: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  604 |     shared_ptr & operator=( std::auto_ptr<Y> & r )
      |                                  ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:613:34: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  613 |     shared_ptr & operator=( std::auto_ptr<Y> && r )
      |                                  ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp: In member function 'boost::shared_ptr<T>& boost::shared_ptr<T>::operator=(std::auto_ptr<_Up>&&)':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/smart_ptr/shared_ptr.hpp:615:38: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
  615 |         this_type( static_cast< std::auto_ptr<Y> && >( r ) ).swap( *this );
      |                                      ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/detail/decltype.hpp:14,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/context/default.hpp:31,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/context.hpp:13,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/proto/proto.hpp:14,
                 from ../inst/include/strop.h:27,
                 from ../inst/include/transforms.h:27,
                 from ../inst/include/grammar.h:24,
                 from ../inst/include/engine.h:26:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/get_pointer.hpp: At global scope:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/get_pointer.hpp:48:40: warning: 'template<class> class std::auto_ptr' is deprecated: use 'std::unique_ptr' instead [-Wdeprecated-declarations]
   48 | template<class T> T * get_pointer(std::auto_ptr<T> const& p)
      |                                        ^~~~~~~~
D:/rtools44/x86_64-w64-mingw32.static.posix/lib/gcc/x86_64-w64-mingw32.static.posix/13.2.0/include/c++/bits/unique_ptr.h:65:28: note: declared here
   65 |   template<typename> class auto_ptr;
      |                            ^~~~~~~~
In file included from ../inst/include/strop.h:30:
../inst/include/strop_stream_producer.h: In member function 'void streamulus::StropStreamProducer<R>::Output(const R&)':
../inst/include/strop_stream_producer.h:50:24: warning: invalid use of incomplete type 'class streamulus::Engine'
   50 |             GetEngine()->template Output<R>(mVertexDescriptor,value);
      |                        ^~
In file included from ../inst/include/engine.h:25:
../inst/include/strop_base.h:26:11: note: forward declaration of 'class streamulus::Engine'
   26 |     class Engine;
      |           ^~~~~~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/assert.hpp:35,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:19:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:31,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:20:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::EdgeListGraph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::EdgeListGraph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/integral_wrapper.hpp:22,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/int.hpp:20,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/lambda_fwd.hpp:23,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/aux_/na_spec.hpp:18,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/mpl/if.hpp:19,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_traits.hpp:17:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:15: note: in a call to non-static member function 'boost::concepts::EdgeListGraphConcept<streamulus::Graph>::~EdgeListGraphConcept()'
  226 | BOOST_concept(EdgeListGraph, (G)) : Graph< G >
      |               ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1: note: in expansion of macro 'BOOST_concept'
  226 | BOOST_concept(EdgeListGraph, (G)) : Graph< G >
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
In file included from ../inst/include/engine.h:31:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:39:10: note: in a call to non-static member function 'void boost::DFSVisitorConcept<Visitor, Graph>::constraints() [with Visitor = streamulus::Engine::TopologicalSortVisitor; Graph = streamulus::Graph]'
   39 |     void constraints()
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   66 |     BOOST_CONCEPT_USAGE(Graph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::EdgeListGraph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::EdgeListGraph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EdgeListGraph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5:   required from 'struct boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3:   required from 'struct boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:41:9:   required from 'void boost::DFSVisitorConcept<Visitor, Graph>::constraints() [with Visitor = streamulus::Engine::TopologicalSortVisitor; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:17: note: in a call to non-static member function 'boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>::~CopyConstructibleConcept()'
  165 |   BOOST_concept(CopyConstructible,(TT))
      |                 ^~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3: note: in expansion of macro 'BOOST_concept'
  165 |   BOOST_concept(CopyConstructible,(TT))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::IncidenceGraph<streamulus::Graph> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5:   required from 'struct boost::concepts::IncidenceGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'struct boost::concepts::IncidenceGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::IncidenceGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::IncidenceGraph<streamulus::Graph>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:15: note: in a call to non-static member function 'boost::concepts::IncidenceGraphConcept<streamulus::Graph>::~IncidenceGraphConcept()'
   75 | BOOST_concept(IncidenceGraph, (G)) : Graph< G >
      |               ^~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1: note: in expansion of macro 'BOOST_concept'
   75 | BOOST_concept(IncidenceGraph, (G)) : Graph< G >
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:205:10: note: in a call to non-static member function 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  205 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::ColorValue<boost::default_color_type> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::ColorValue<boost::default_color_type>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:15: note: in a call to non-static member function 'boost::concepts::ColorValueConcept<boost::default_color_type>::~ColorValueConcept()'
  502 | BOOST_concept(ColorValue, (C))
      |               ^~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1: note: in expansion of macro 'BOOST_concept'
  502 | BOOST_concept(ColorValue, (C))
      | ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::edge_list_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5:   required from 'struct boost::CopyConstructible<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:165:3:   required from 'struct boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::CopyConstructibleConcept<streamulus::Engine::TopologicalSortVisitor> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DFSVisitorConcept<streamulus::Engine::TopologicalSortVisitor, streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:130:9:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::CopyConstructible<TT>::~CopyConstructible() [with TT = streamulus::Engine::TopologicalSortVisitor]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:167:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  167 |     BOOST_CONCEPT_USAGE(CopyConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::IncidenceGraph<streamulus::Graph>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::IncidenceGraph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5:   required from 'struct boost::concepts::IncidenceGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'struct boost::concepts::IncidenceGraphConcept<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::IncidenceGraphConcept<streamulus::Graph> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:87:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   87 |     BOOST_CONCEPT_USAGE(IncidenceGraph)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:206:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:147:10: note: in a call to non-static member function 'void boost::ReadablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  147 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:207:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:179:10: note: in a call to non-static member function 'void boost::WritablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
  179 |     void constraints() {
      |          ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:208:7:   required from 'void boost::ReadWritePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadWritePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::ColorValue<boost::default_color_type>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::ColorValue<boost::default_color_type> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5:   required from 'struct boost::concepts::ColorValue<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:502:1:   required from 'struct boost::concepts::ColorValueConcept<boost::default_color_type>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::ColorValueConcept<boost::default_color_type>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::ColorValueConcept<boost::default_color_type> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:136:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::ColorValue<C>::~ColorValue() [with C = boost::default_color_type]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:505:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  505 |     BOOST_CONCEPT_USAGE(ColorValue)
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::DefaultConstructible<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:68:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::DefaultConstructible<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:68:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::EqualityComparable<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:69:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::EqualityComparable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:69:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Assignable<long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:70:9:   [ skipping 8 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<long long unsigned int>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Assignable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:70:9:   required from 'boost::concepts::Graph<G>::~Graph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::Graph<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::Graph<streamulus::Graph> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:66:5:   required from 'struct boost::concepts::Graph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'struct boost::concepts::EdgeListGraph<streamulus::Graph>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:90:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:91:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:92:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::edge_list_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:239:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::edge_list_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::algorithm::FinderConcept<boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>, __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:98:13:   required from 'void boost::algorithm::find_format_all(SequenceT&, FinderT, FormatterT) [with SequenceT = std::__cxx11::basic_string<char>; FinderT = detail::first_finderF<const char*, is_equal>; FormatterT = detail::const_formatF<boost::iterator_range<const char*> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:652:48:   required from 'void boost::algorithm::replace_all(SequenceT&, const Range1T&, const Range2T&) [with SequenceT = std::__cxx11::basic_string<char>; Range1T = char [2]; Range2T = char [3]]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:71:38:   required from 'std::string boost::escape_dot_string(const T&) [with T = std::__cxx11::basic_string<char>; std::string = std::__cxx11::basic_string<char>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:270:54:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
In file included from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:21,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:22,
                 from D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:34,
                 from ../inst/include/engine.h:30:
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/concept.hpp:40:18: note: in a call to non-static member function 'void boost::algorithm::FinderConcept<FinderT, IteratorT>::constraints() [with FinderT = boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>; IteratorT = __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >]'
   40 |             void constraints()
      |                  ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::constraint<Model>::failed() [with Model = boost::algorithm::FormatterConcept<boost::algorithm::detail::const_formatF<boost::iterator_range<const char*> >, boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>, __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/find_format.hpp:103:13:   required from 'void boost::algorithm::find_format_all(SequenceT&, FinderT, FormatterT) [with SequenceT = std::__cxx11::basic_string<char>; FinderT = detail::first_finderF<const char*, is_equal>; FormatterT = detail::const_formatF<boost::iterator_range<const char*> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/replace.hpp:652:48:   required from 'void boost::algorithm::replace_all(SequenceT&, const Range1T&, const Range2T&) [with SequenceT = std::__cxx11::basic_string<char>; Range1T = char [2]; Range2T = char [3]]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:71:38:   required from 'std::string boost::escape_dot_string(const T&) [with T = std::__cxx11::basic_string<char>; std::string = std::__cxx11::basic_string<char>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:270:54:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:65:52: warning: 'this' pointer is null [-Wnonnull]
   65 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/algorithm/string/concept.hpp:65:18: note: in a call to non-static member function 'void boost::algorithm::FormatterConcept<FormatterT, FinderT, IteratorT>::constraints() [with FormatterT = boost::algorithm::detail::const_formatF<boost::iterator_range<const char*> >; FinderT = boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>; IteratorT = __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> >]'
   65 |             void constraints()
      |                  ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:93:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:93:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::incidence_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 11 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:148:7:   required from 'void boost::ReadablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::ReadablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:206:7:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 11 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:180:7:   required from 'void boost::WritablePropertyMapConcept<PMap, Key>::constraints() [with PMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; Key = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::WritablePropertyMapConcept<boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >, long long unsigned int>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/property_map/property_map.hpp:207:7:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:17: note: in a call to non-static member function 'boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>::~ConvertibleConcept()'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |                 ^~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/preprocessor/cat.hpp:29:34: note: in definition of macro 'BOOST_PP_CAT_I'
   29 | #    define BOOST_PP_CAT_I(a, b) a ## b
      |                                  ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/concept_def.hpp:23:12: note: in expansion of macro 'BOOST_PP_CAT'
   23 |     struct BOOST_PP_CAT(name,Concept)                                           \
      |            ^~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3: note: in expansion of macro 'BOOST_concept'
  206 |   BOOST_concept(Convertible,(X)(Y))
      |   ^~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::read_write_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 7 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::read_write_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5:   required from 'struct boost::DefaultConstructible<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::DefaultConstructible<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::DefaultConstructible<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:137:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  137 |     BOOST_CONCEPT_USAGE(DefaultConstructible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::EqualityComparable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::EqualityComparable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<long long unsigned int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<long long unsigned int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<long long unsigned int>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Assignable<long long unsigned int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Assignable<long long unsigned int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 9 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::EdgeListGraphConcept<streamulus::Graph> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::concepts::EdgeListGraphConcept<streamulus::Graph>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = long long unsigned int]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50:   required from 'struct boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:52:50: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
   52 |     BOOST_concept(MultiPassInputIterator, (T)) { BOOST_CONCEPT_USAGE(
      |                                                  ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::bidir_adj_list_traversal_tag, boost::incidence_graph_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::bidir_adj_list_traversal_tag; Y = boost::incidence_graph_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::readable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 12 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::readable_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:206:3:   required from 'struct boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::ConvertibleConcept<boost::lvalue_property_map_tag, boost::writable_property_map_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 12 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:134:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::lvalue_property_map_tag; Y = boost::writable_property_map_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 3 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   required from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:75:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::IncidenceGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::SignedInteger<long long int>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:514:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:109:22: note: in a call to non-static member function 'boost::SignedInteger<long long int>::~SignedInteger()'
  109 |   template <> struct SignedInteger< ::boost::long_long_type> {};
      |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   [ skipping 4 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::undirected_edge_iter<std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5:   required from 'struct boost::Assignable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Assignable<TT>::~Assignable() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:145:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  145 |     BOOST_CONCEPT_USAGE(Assignable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5:   required from 'struct boost::EqualityComparable<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:502:3:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::EqualityComparable<TT>::~EqualityComparable() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:233:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  233 |     BOOST_CONCEPT_USAGE(EqualityComparable) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7:   required from 'struct boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> > >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:512:7: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  512 |       BOOST_CONCEPT_USAGE(InputIterator)
      |       ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:235:9:   required from 'boost::concepts::EdgeListGraph<G>::~EdgeListGraph() [with G = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:226:1:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::EdgeListGraphConcept<streamulus::Graph>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:265:5:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, VertexID, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; VertexID = vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int>; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:302:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexPropertiesWriter, EdgePropertiesWriter, GraphPropertiesWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexPropertiesWriter = streamulus::Engine::VertexPropertyWriter; EdgePropertiesWriter = default_writer; GraphPropertiesWriter = default_writer; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graphviz.hpp:322:19:   required from 'void boost::write_graphviz(std::ostream&, const Graph&, VertexWriter, typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type) [with Graph = streamulus::Graph; VertexWriter = streamulus::Engine::VertexPropertyWriter; std::ostream = std::basic_ostream<char>; typename enable_if_c<is_base_and_derived<vertex_list_graph_tag, typename graph_traits<Graph>::traversal_category>::value, graph::detail::no_parameter>::type = graph::detail::no_parameter; typename graph_traits<Graph>::traversal_category = bidir_adj_list_traversal_tag]'
../inst/include/engine.h:367:34:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::bidirectional_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   required from 'struct boost::concepts::requirement_<void (*)(boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>)>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   [ skipping 6 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:5: note: in a call to non-static member function 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |     ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp: In instantiation of 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:515:9:   required from 'boost::InputIterator<TT>::~InputIterator() [with TT = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::InputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:53:35:   required from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator() [with T = boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::MultiPassInputIterator<boost::detail::out_edge_iter<__gnu_cxx::__normal_iterator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >*, std::vector<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > >, std::allocator<boost::detail::stored_edge_iter<long long unsigned int, std::_List_iterator<boost::list_edge<long long unsigned int, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > >, boost::property<streamulus::StreamTag, boost::shared_ptr<streamulus::StreamBase> > > > > >, long long unsigned int, boost::detail::edge_desc_impl<boost::bidirectional_tag, long long unsigned int>, long long int> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/graph_concepts.hpp:89:9:   [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47: warning: 'this' pointer is null [-Wnonnull]
   50 |     static void failed() { ((Model*)0)->~Model(); }
      |                            ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp: In instantiation of 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]':
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:50:47:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5:   required from 'struct boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:32:62:   required by substitution of 'template<class Model> boost::concepts::detail::yes boost::concepts::detail::has_constraints_(Model*, wrap_constraints<Model, (& Model::constraints)>*) [with Model = boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag>]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:42:5:   required from 'const bool boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >::value'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/has_constraints.hpp:45:51:   required from 'struct boost::concepts::not_satisfied<boost::Convertible<boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>, std::input_iterator_tag> >'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/detail/general.hpp:72:8:   [ skipping 7 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:129:9:   required from 'void boost::detail::depth_first_visit_impl(const IncidenceGraph&, typename boost::graph_traits<Graph>::vertex_descriptor, DFSVisitor&, ColorMap, TerminatorFunc) [with IncidenceGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = boost::shared_array_property_map<boost::default_color_type, boost::vec_adj_list_vertex_id_map<boost::property<streamulus::StropTag, boost::shared_ptr<streamulus::StropBase> >, long long unsigned int> >; TerminatorFunc = nontruth2; typename boost::graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:286:39:   required from 'void boost::depth_first_search(const VertexListGraph&, DFSVisitor, ColorMap, typename graph_traits<Graph>::vertex_descriptor) [with VertexListGraph = streamulus::Graph; DFSVisitor = streamulus::Engine::TopologicalSortVisitor; ColorMap = shared_array_property_map<default_color_type, vec_adj_list_vertex_id_map<property<streamulus::StropTag, shared_ptr<streamulus::StropBase> >, long long unsigned int> >; typename graph_traits<Graph>::vertex_descriptor = long long unsigned int]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:397:42:   required from 'void boost::graph::detail::depth_first_search_impl<Graph>::operator()(const Graph&, const ArgPack&) const [with ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<boost::graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; Graph = streamulus::Graph]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:406:5:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type boost::graph::depth_first_search_with_named_params(const Param0&, const ArgPack&) [with Param0 = streamulus::Graph; ArgPack = boost::parameter::aux::arg_list<boost::parameter::aux::tagged_argument<keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, boost::parameter::aux::empty_arg_list, std::integral_constant<bool, true> >; typename boost::result_of<detail::depth_first_search_impl<Param0>(Param0, const ArgPack&)>::type = void]'
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/graph/depth_first_search.hpp:409:1:   required from 'typename boost::result_of<boost::graph::detail::depth_first_search_impl<Param0>(Param0, const typename boost::detail::convert_bgl_params_to_boost_parameter<boost::bgl_named_params<T, Tag, Base> >::type&)>::type boost::depth_first_search(const Param0&, const bgl_named_params<T, Tag, Base>&) [with Param0 = streamulus::Graph; P = streamulus::Engine::TopologicalSortVisitor; T = graph_visitor_t; R = no_property; typename result_of<graph::detail::depth_first_search_impl<Param0>(Param0, const typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type&)>::type = void; typename detail::convert_bgl_params_to_boost_parameter<bgl_named_params<T, Tag, Base> >::type = parameter::aux::arg_list<parameter::aux::tagged_argument<graph::keywords::tag::visitor, const streamulus::Engine::TopologicalSortVisitor>, parameter::aux::empty_arg_list, std::integral_constant<bool, true> >]'
../inst/include/engine.h:315:38:   required from here
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:20:48: warning: 'this' pointer is null [-Wnonnull]
   20 |     ~usage_requirements() { ((Model*)0)->~Model(); }
      |                             ~~~~~~~~~~~~~~~~~~~^~
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept/usage.hpp:37:7: note: in a call to non-static member function 'boost::Convertible<X, Y>::~Convertible() [with X = boost::iterators::detail::iterator_category_with_traversal<std::input_iterator_tag, boost::iterators::random_access_traversal_tag>; Y = std::input_iterator_tag]'
   37 |       ~model()
      |       ^
D:/RCompile/CRANpkg/lib/4.4/BH/include/boost/concept_check.hpp:208:5: note: in expansion of macro 'BOOST_CONCEPT_USAGE'
  208 |     BOOST_CONCEPT_USAGE(Convertible) {
      |     ^~~~~~~~~~~~~~~~~~~
g++ -shared -s -static-libgcc -o RcppStreams.dll tmp.def RcppExports.o common.o hello.o movavg.o sliding.o -Ld:/rtools44/x86_64-w64-mingw32.static.posix/lib/x64 -Ld:/rtools44/x86_64-w64-mingw32.static.posix/lib -LD:/RCompile/recent/R-4.4.0/bin/x64 -lR
make[1]: Leaving directory '/d/temp/RtmpAB9pBv/R.INSTALL743037db6eb/RcppStreams/src'
make[1]: Entering directory '/d/temp/RtmpAB9pBv/R.INSTALL743037db6eb/RcppStreams/src'
make[1]: Leaving directory '/d/temp/RtmpAB9pBv/R.INSTALL743037db6eb/RcppStreams/src'
installing to d:/Rcompile/CRANpkg/lib/4.4/00LOCK-RcppStreams/00new/RcppStreams/libs/x64
** R
** inst
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
** testing if installed package can be loaded from final location
** testing if installed package keeps a record of temporary installation path
* MD5 sums
packaged installation of 'RcppStreams' as RcppStreams_0.1.3.zip
* DONE (RcppStreams)