Found the following significant warnings:
  /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/Rcpp/include/Rcpp/StringTransformer.h:30:40: warning: 'unary_function<const char *, const char *>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<bool, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<char, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<signed char, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<unsigned char, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<wchar_t, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<char16_t, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<char32_t, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<short, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<unsigned short, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<int, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<unsigned int, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<long, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<unsigned long, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<float, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<double, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<long double, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<std::basic_string<char>, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<std::basic_string<wchar_t>, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<std::basic_string<char16_t>, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<std::basic_string<char32_t>, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<long long, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<unsigned long long, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<__int128, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<unsigned __int128, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<std::type_index, unsigned long>' is deprecated [-Wdeprecated-declarations]
  vendor/boost/container_hash/hash.hpp:131:33: warning: 'unary_function<const std::error_category *, unsigned long>' is deprecated [-Wdeprecated-declarations]
See '/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/RSQLite.Rcheck/00install.out' for details.