[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!

00:42:37 Deleting outdated reference-chroot-metadata.dat
00:42:37 Testing package stretch2buster-rcmd/games-card 2.2
00:50:32 Deleting outdated reference-chroot-metadata.dat
00:50:32 Testing package stretch2buster-rcmd/monodoc-avahi-manual None
00:55:32 Deleting outdated reference-chroot-metadata.dat
00:55:32 Testing package stretch2buster-rcmd/glade 3.22.0-1
01:02:55 Deleting outdated reference-chroot-metadata.dat
01:02:55 Testing package stretch2buster-rcmd/task-chinese-s-kde-desktop 3.43
01:09:19 Deleting outdated reference-chroot-metadata.dat
01:09:19 Testing package stretch2buster-rcmd/games-finest-light 2.2