/usr/share/apport/package-hooks/source_xorg-sgml-doctools.py is in xdiagnose 3.6.3build2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/apport/package-hooks/source_xorg.py
/usr/share/apport/package-hooks/source_xorg.py