/usr/include/boost/range/detail/ is in libboost1.62-dev 1.62.0+dfsg-5.
This file is owned by root:root, with mode 0o755.
..
/usr/include/boost/range/detail/any_iterator.hpp
/usr/include/boost/range/detail/any_iterator_buffer.hpp
/usr/include/boost/range/detail/any_iterator_interface.hpp
/usr/include/boost/range/detail/any_iterator_wrapper.hpp
/usr/include/boost/range/detail/as_literal.hpp
/usr/include/boost/range/detail/begin.hpp
/usr/include/boost/range/detail/collection_traits.hpp
/usr/include/boost/range/detail/collection_traits_detail.hpp
/usr/include/boost/range/detail/combine_cxx03.hpp
/usr/include/boost/range/detail/combine_cxx11.hpp
/usr/include/boost/range/detail/combine_no_rvalue.hpp
/usr/include/boost/range/detail/combine_rvalue.hpp
/usr/include/boost/range/detail/common.hpp
/usr/include/boost/range/detail/default_constructible_unary_fn.hpp
/usr/include/boost/range/detail/demote_iterator_traversal_tag.hpp
/usr/include/boost/range/detail/detail_str.hpp
/usr/include/boost/range/detail/difference_type.hpp
/usr/include/boost/range/detail/empty.hpp
/usr/include/boost/range/detail/end.hpp
/usr/include/boost/range/detail/extract_optional_type.hpp
/usr/include/boost/range/detail/has_member_size.hpp
/usr/include/boost/range/detail/implementation_help.hpp
/usr/include/boost/range/detail/join_iterator.hpp
/usr/include/boost/range/detail/microsoft.hpp
/usr/include/boost/range/detail/misc_concept.hpp
/usr/include/boost/range/detail/msvc_has_iterator_workaround.hpp
/usr/include/boost/range/detail/range_return.hpp
/usr/include/boost/range/detail/remove_extent.hpp
/usr/include/boost/range/detail/safe_bool.hpp
/usr/include/boost/range/detail/sfinae.hpp
/usr/include/boost/range/detail/size_type.hpp
/usr/include/boost/range/detail/sizer.hpp
/usr/include/boost/range/detail/str_types.hpp
/usr/include/boost/range/detail/value_type.hpp