/usr/share/doc/libghc-unordered-containers-prof/changelog.Debian.gz is in libghc-unordered-containers-prof 0.1.4.6-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libghc-unordered-containers-prof/../libghc-unordered-containers-dev/changelog.Debian.gz