/usr/include/boost/test/tools/ is in libboost1.65-dev 1.65.1+dfsg-0ubuntu5.
This file is owned by root:root, with mode 0o755.
..
/usr/include/boost/test/tools/assertion.hpp
/usr/include/boost/test/tools/assertion_result.hpp
/usr/include/boost/test/tools/collection_comparison_op.hpp
/usr/include/boost/test/tools/context.hpp
/usr/include/boost/test/tools/cstring_comparison_op.hpp
/usr/include/boost/test/tools/detail/
/usr/include/boost/test/tools/detail/bitwise_manip.hpp
/usr/include/boost/test/tools/detail/expression_holder.hpp
/usr/include/boost/test/tools/detail/fwd.hpp
/usr/include/boost/test/tools/detail/indirections.hpp
/usr/include/boost/test/tools/detail/it_pair.hpp
/usr/include/boost/test/tools/detail/lexicographic_manip.hpp
/usr/include/boost/test/tools/detail/per_element_manip.hpp
/usr/include/boost/test/tools/detail/print_helper.hpp
/usr/include/boost/test/tools/detail/tolerance_manip.hpp
/usr/include/boost/test/tools/floating_point_comparison.hpp
/usr/include/boost/test/tools/fpc_op.hpp
/usr/include/boost/test/tools/fpc_tolerance.hpp
/usr/include/boost/test/tools/interface.hpp
/usr/include/boost/test/tools/old/
/usr/include/boost/test/tools/old/impl.hpp
/usr/include/boost/test/tools/old/interface.hpp
/usr/include/boost/test/tools/output_test_stream.hpp