/usr/share/doc/liburcu-dev/changelog.Debian.gz is in liburcu-dev 0.7.12-0ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/liburcu-dev/../liburcu1/changelog.Debian.gz
/usr/share/doc/liburcu-dev/../liburcu1/changelog.Debian.gz