[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!

20:43:37 Deleting outdated reference-chroot-metadata.dat
20:43:37 Testing package stretch2buster-rcmd/astro-telescopecontrol 1.3
20:48:34 Deleting outdated reference-chroot-metadata.dat
20:48:34 Testing package stretch2buster-rcmd/task-french-desktop 3.43
20:52:02 Deleting outdated reference-chroot-metadata.dat
20:52:02 Testing package stretch2buster-rcmd/task-finnish-desktop 3.43
20:55:28 Deleting outdated reference-chroot-metadata.dat
20:55:28 Testing package stretch2buster-rcmd/asterisk-dev 1:13.20.0~dfsg-1
20:57:53 Deleting outdated reference-chroot-metadata.dat
20:57:53 Testing package stretch2buster-rcmd/med-all 3.0.1