/usr/include/boost/lambda/detail/ is in libboost1.62-dev 1.62.0+dfsg-5.
This file is owned by root:root, with mode 0o755.
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/usr/include/boost/lambda/detail/actions.hpp
/usr/include/boost/lambda/detail/arity_code.hpp
/usr/include/boost/lambda/detail/bind_functions.hpp
/usr/include/boost/lambda/detail/control_constructs_common.hpp
/usr/include/boost/lambda/detail/function_adaptors.hpp
/usr/include/boost/lambda/detail/is_instance_of.hpp
/usr/include/boost/lambda/detail/lambda_config.hpp
/usr/include/boost/lambda/detail/lambda_functor_base.hpp
/usr/include/boost/lambda/detail/lambda_functors.hpp
/usr/include/boost/lambda/detail/lambda_fwd.hpp
/usr/include/boost/lambda/detail/lambda_traits.hpp
/usr/include/boost/lambda/detail/member_ptr.hpp
/usr/include/boost/lambda/detail/operator_actions.hpp
/usr/include/boost/lambda/detail/operator_lambda_func_base.hpp
/usr/include/boost/lambda/detail/operator_return_type_traits.hpp
/usr/include/boost/lambda/detail/operators.hpp
/usr/include/boost/lambda/detail/ret.hpp
/usr/include/boost/lambda/detail/return_type_traits.hpp
/usr/include/boost/lambda/detail/select_functions.hpp
/usr/include/boost/lambda/detail/suppress_unused.hpp