this package seems to have new commits in its VCS but has
not yet updated debian/changelog. You should consider updating
the Debian changelog and uploading this new version into the archive.
Here are the relevant commit logs:
Author: Sébastien Villemot <firstname.lastname@example.org>
Date: Tue Jun 19 14:56:25 2018 +0200
autopkgtest: rather use UIOP:QUIT than ERROR