[Piuparts-reports] problem with piuparts-slave detected

[piuparts slave]

Either a test is running for a very long time (but no test
should run longer than an hour), piuparts-slave hangs or is
not running at all or wasn't started with
~piupartss/bin/slave_run - please investigate and take
appropriate measures!

19:51:36 Recycling section buster-rcmd (precedence=4)
19:51:36 master has nothing to recycle
19:51:36 -------------------------------------------
19:51:36 Recycling section stretch2buster (precedence=4)
19:52:02 Reserved for us: design-desktop None
19:52:02 Master didn't reserve anything (more) for us
19:52:02 Master stretch2buster status: (recycle) successfully-tested=50799 failed-testing=18 cannot-be-tested=0 waiting-to-be-tested=1 waiting-for-dependency-to-be-tested=4 dependency-failed-testing=16 dependency-cannot-be-tested=0 dependency-does-not-exist=3 unknown=0 outdated=0 total=50841
19:52:02 Connection to master closed
19:52:08 Deleting old reference-chroot-metadata.dat
19:52:08 Testing package stretch2buster/design-desktop None