/usr/share/doc/libmediascanner-2.0-dev/changelog.Debian.gz is in libmediascanner-2.0-dev 0.111+16.04.20160317-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libmediascanner-2.0-dev/../libmediascanner-2.0-4/changelog.Debian.gz