/usr/share/doc/libcrystalhd-dev/changelog.Debian.gz is in libcrystalhd-dev 1:0.0~git20110715.fdd2f19-11build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libcrystalhd-dev/../libcrystalhd3/changelog.Debian.gz