/usr/include/boost/fusion/sequence/intrinsic/ is in libboost1.54-dev 1.54.0-4ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/boost/fusion/sequence/intrinsic/at.hpp
/usr/include/boost/fusion/sequence/intrinsic/at_c.hpp
/usr/include/boost/fusion/sequence/intrinsic/at_key.hpp
/usr/include/boost/fusion/sequence/intrinsic/back.hpp
/usr/include/boost/fusion/sequence/intrinsic/begin.hpp
/usr/include/boost/fusion/sequence/intrinsic/detail/
/usr/include/boost/fusion/sequence/intrinsic/detail/segmented_begin.hpp
/usr/include/boost/fusion/sequence/intrinsic/detail/segmented_begin_impl.hpp
/usr/include/boost/fusion/sequence/intrinsic/detail/segmented_end.hpp
/usr/include/boost/fusion/sequence/intrinsic/detail/segmented_end_impl.hpp
/usr/include/boost/fusion/sequence/intrinsic/detail/segmented_size.hpp
/usr/include/boost/fusion/sequence/intrinsic/empty.hpp
/usr/include/boost/fusion/sequence/intrinsic/end.hpp
/usr/include/boost/fusion/sequence/intrinsic/front.hpp
/usr/include/boost/fusion/sequence/intrinsic/has_key.hpp
/usr/include/boost/fusion/sequence/intrinsic/segments.hpp
/usr/include/boost/fusion/sequence/intrinsic/size.hpp
/usr/include/boost/fusion/sequence/intrinsic/swap.hpp
/usr/include/boost/fusion/sequence/intrinsic/value_at.hpp
/usr/include/boost/fusion/sequence/intrinsic/value_at_key.hpp