/usr/ is in libluasandbox-dev 1.2.1-4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/luasandbox/
/usr/include/luasandbox/error.h
/usr/include/luasandbox/heka/
/usr/include/luasandbox/heka/sandbox.h
/usr/include/luasandbox/heka/stream_reader.h
/usr/include/luasandbox/lauxlib.h
/usr/include/luasandbox/lua.h
/usr/include/luasandbox/luaconf.h
/usr/include/luasandbox/lualib.h
/usr/include/luasandbox/luasandbox-deb-multiarch.h
/usr/include/luasandbox/test/
/usr/include/luasandbox/test/mu_test.h
/usr/include/luasandbox/test/sandbox.h
/usr/include/luasandbox/util/
/usr/include/luasandbox/util/heka_message.h
/usr/include/luasandbox/util/heka_message_matcher.h
/usr/include/luasandbox/util/input_buffer.h
/usr/include/luasandbox/util/output_buffer.h
/usr/include/luasandbox/util/protobuf.h
/usr/include/luasandbox/util/running_stats.h
/usr/include/luasandbox/util/string.h
/usr/include/luasandbox/util/string_matcher.h
/usr/include/luasandbox/util/util.h
/usr/include/luasandbox.h
/usr/include/luasandbox_output.h
/usr/include/luasandbox_serialize.h
/usr/include/x86_64-linux-gnu/
/usr/include/x86_64-linux-gnu/luasandbox-deb-multiarch.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/luasandbox.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libluasandbox-dev/
/usr/share/doc/libluasandbox-dev/copyright
/usr/share/luasandbox/
/usr/share/luasandbox/cmake/
/usr/share/luasandbox/cmake/luasandboxConfig.cmake
/usr/share/luasandbox/cmake/luasandboxConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/libluasandbox.so
/usr/lib/x86_64-linux-gnu/libluasandboxheka.so
/usr/lib/x86_64-linux-gnu/libluasandboxtest.so
/usr/lib/x86_64-linux-gnu/libluasandboxutil.so
/usr/lib/x86_64-linux-gnu/pkgconfig/lua-sandbox.pc
/usr/share/doc/libluasandbox-dev/changelog.Debian.gz