/usr/share/man/man1/clc-unregister-user-package.1.gz is in common-lisp-controller 7.10+nmu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/clc-register-user-package.1.gz
/usr/share/man/man1/clc-register-user-package.1.gz