/usr/lib/python2.7/dist-packages/mailnag-0.5.2.egg-info is in mailnag 0.5.2-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/../../../share/pyshared/mailnag-0.5.2.egg-info