/usr/share/doc/libdrumstick-dev/changelog.Debian.gz is in libdrumstick-dev 0.5.0-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libdrumstick-dev/../libdrumstick0/changelog.Debian.gz
/usr/share/doc/libdrumstick-dev/../libdrumstick0/changelog.Debian.gz