/usr/ is in libuser1-dev 1:0.62~dfsg-0.1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/libuser/
/usr/include/libuser/config.h
/usr/include/libuser/entity.h
/usr/include/libuser/error.h
/usr/include/libuser/fs.h
/usr/include/libuser/prompt.h
/usr/include/libuser/user.h
/usr/include/libuser/user_private.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libuser.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libuser1-dev/
/usr/share/doc/libuser1-dev/copyright
/usr/lib/x86_64-linux-gnu/libuser.so
/usr/share/doc/libuser1-dev/changelog.Debian.gz