/usr/lib/python2.7/dist-packages/roadmapplugin/locale/messages.pot is in trac-roadmap 0.4.1+r11241-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/roadmapplugin/locale/../../../../../share/pyshared/roadmapplugin/locale/messages.pot