/usr/share/lintian/overrides/mutt is in mutt 1.9.4-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | mutt: setgid-binary usr/bin/mutt_dotlock 2755 root/mail
mutt: arch-dep-package-has-big-usr-share
|