/usr/share/common-lisp/systems/md5.asd is in cl-md5 1:20150804-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/common-lisp/systems/../source/md5/md5.asd
/usr/share/common-lisp/systems/../source/md5/md5.asd