The recent deposit v0.7.0 changed a bit cogs.
In the current case, it's because the xmlns namespace are used correctly.
So the icinga-plugins repository should change a bit its xml to respect that.
Builds in error [1] [2]
[1] https://jenkins.softwareheritage.org/job/DICP/job/tests/399/console
[2] https://jenkins.softwareheritage.org/job/swh-docker-dev/lastBuild/console