/usr/ is in libclass-loader-dev 0.3.8-1build2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/class_loader/
/usr/include/class_loader/class_loader.h
/usr/include/class_loader/class_loader_core.h
/usr/include/class_loader/class_loader_exceptions.h
/usr/include/class_loader/class_loader_register_macro.h
/usr/include/class_loader/console_bridge_compatibility.h
/usr/include/class_loader/meta_object.h
/usr/include/class_loader/multi_library_class_loader.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/class_loader.pc
/usr/share/
/usr/share/class_loader/
/usr/share/class_loader/cmake/
/usr/share/class_loader/cmake/class_loader-extras.cmake
/usr/share/class_loader/cmake/class_loaderConfig-version.cmake
/usr/share/class_loader/cmake/class_loaderConfig.cmake
/usr/share/class_loader/package.xml
/usr/share/doc/
/usr/share/doc/libclass-loader-dev/
/usr/share/doc/libclass-loader-dev/copyright
/usr/lib/x86_64-linux-gnu/libclass_loader.so
/usr/share/doc/libclass-loader-dev/changelog.Debian.gz