/usr/include/boost/phoenix/stl/ is in libboost1.62-dev 1.62.0+dfsg-5.
This file is owned by root:root, with mode 0o755.
..
/usr/include/boost/phoenix/stl/algorithm/
/usr/include/boost/phoenix/stl/algorithm.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/
/usr/include/boost/phoenix/stl/algorithm/detail/begin.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/decay_array.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/end.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/has_equal_range.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/has_find.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/has_lower_bound.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/has_remove.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/has_remove_if.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/has_reverse.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/has_sort.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/has_unique.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/has_upper_bound.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/is_std_hash_map.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/is_std_hash_set.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/is_std_list.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/is_std_map.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/is_std_set.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/is_unordered_set_or_map.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/std_hash_map_fwd.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/std_hash_set_fwd.hpp
/usr/include/boost/phoenix/stl/algorithm/detail/std_unordered_set_or_map_fwd.hpp
/usr/include/boost/phoenix/stl/algorithm/iteration.hpp
/usr/include/boost/phoenix/stl/algorithm/querying.hpp
/usr/include/boost/phoenix/stl/algorithm/transformation.hpp
/usr/include/boost/phoenix/stl/cmath.hpp
/usr/include/boost/phoenix/stl/container/
/usr/include/boost/phoenix/stl/container.hpp
/usr/include/boost/phoenix/stl/container/container.hpp
/usr/include/boost/phoenix/stl/container/detail/
/usr/include/boost/phoenix/stl/container/detail/container.hpp