Builds seem to fail if the mirror of a "Unpack *.zip/*.tar.gz Archive" Maven installation procedure is offline even though that same installation is already present.

We configured a Maven installation procedure for Maven 3.2.3 via download from one of the mirrors (see error.log.txt). Maven had been successfully installed and used since a couple of weeks ago. Last weekend builds using that Maven version started to fail with the attached output (see error.log.txt). I checked and found out that the mirror was unreachable.

However, since the installation had been successful weeks ago, the builds should not fail and use the already present installation. It should only fail on new build nodes which did not yet install the version.