The platformlabeler plugin uses the contents of /etc/os-release and the output of lsb_release to automatically assign labels to agents.

Recently, the Debian testing distribution switched to report "testing/unstable" in the output of lsb_release. That's a perfectly reasonable thing for them to do, but it breaks the use of the label in Jenkins because a Jenkins label does not seem to support embedded slashes.

The platformlabeler plugin should replace embedded slashes with another character so that the automatically generated labels are usable.