/usr/include/boost/phoenix/operator/ is in libboost1.54-dev 1.54.0-4ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/boost/phoenix/operator/arithmetic.hpp
/usr/include/boost/phoenix/operator/bitwise.hpp
/usr/include/boost/phoenix/operator/comparison.hpp
/usr/include/boost/phoenix/operator/detail/
/usr/include/boost/phoenix/operator/detail/define_operator.hpp
/usr/include/boost/phoenix/operator/detail/mem_fun_ptr_eval_result_of.hpp
/usr/include/boost/phoenix/operator/detail/mem_fun_ptr_gen.hpp
/usr/include/boost/phoenix/operator/detail/preprocessed/
/usr/include/boost/phoenix/operator/detail/preprocessed/mem_fun_ptr_gen.hpp
/usr/include/boost/phoenix/operator/detail/preprocessed/mem_fun_ptr_gen_10.hpp
/usr/include/boost/phoenix/operator/detail/preprocessed/mem_fun_ptr_gen_20.hpp
/usr/include/boost/phoenix/operator/detail/preprocessed/mem_fun_ptr_gen_30.hpp
/usr/include/boost/phoenix/operator/detail/preprocessed/mem_fun_ptr_gen_40.hpp
/usr/include/boost/phoenix/operator/detail/preprocessed/mem_fun_ptr_gen_50.hpp
/usr/include/boost/phoenix/operator/detail/undef_operator.hpp
/usr/include/boost/phoenix/operator/if_else.hpp
/usr/include/boost/phoenix/operator/io.hpp
/usr/include/boost/phoenix/operator/logical.hpp
/usr/include/boost/phoenix/operator/member.hpp
/usr/include/boost/phoenix/operator/preprocessed/
/usr/include/boost/phoenix/operator/preprocessed/member.hpp
/usr/include/boost/phoenix/operator/preprocessed/member_10.hpp
/usr/include/boost/phoenix/operator/preprocessed/member_20.hpp
/usr/include/boost/phoenix/operator/preprocessed/member_30.hpp
/usr/include/boost/phoenix/operator/preprocessed/member_40.hpp
/usr/include/boost/phoenix/operator/preprocessed/member_50.hpp
/usr/include/boost/phoenix/operator/self.hpp