/usr/share/doc/libbullet-dev/changelog.Debian.gz is in libbullet-dev 2.87+dfsg-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libbullet-dev/../libbullet2.87/changelog.Debian.gz
/usr/share/doc/libbullet-dev/../libbullet2.87/changelog.Debian.gz