Found the following significant warnings:
  bartFit.cpp:996:24: warning: field width specifier '*' expects argument of type 'int', but argument 2 has type 'std::size_t' {aka 'long unsigned int'} [-Wformat=]
  bartFit.cpp:1393:35: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'std::size_t' {aka 'long unsigned int'} [-Wformat=]
  bartFit.cpp:1393:42: warning: format '%u' expects argument of type 'unsigned int', but argument 3 has type 'std::size_t' {aka 'long unsigned int'} [-Wformat=]
  bartFit.cpp:1573:53: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'long unsigned int' [-Wformat=]
  bartFit.cpp:1574:49: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'long unsigned int' [-Wformat=]
  bartFit.cpp:1575:53: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'long unsigned int' [-Wformat=]
  bartFit.cpp:1584:21: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'std::size_t' {aka 'long unsigned int'} [-Wformat=]
  bartFit.cpp:1591:24: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'std::size_t' {aka 'long unsigned int'} [-Wformat=]
  bartFit.cpp:1649:23: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'std::size_t' {aka 'long unsigned int'} [-Wformat=]
  bartFit.cpp:1653:22: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'std::size_t' {aka 'long unsigned int'} [-Wformat=]
  node.cpp:204:18: warning: field width specifier '*' expects argument of type 'int', but argument 2 has type 'std::size_t' {aka 'long unsigned int'} [-Wformat=]
  node.cpp:233:18: warning: field width specifier '*' expects argument of type 'int', but argument 2 has type 'std::size_t' {aka 'long unsigned int'} [-Wformat=]
See ‘/data/gannet/ripley/R/packages/tests-devel/dbarts.Rcheck/00install.out’ for details.
* used C compiler: ‘gcc-13 (GCC) 13.2.0’
* used C++ compiler: ‘g++-13 (GCC) 13.2.0’