[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!

07:42:46 Deleting outdated reference-chroot-metadata.dat
07:42:46 Testing package stretch2buster-rcmd/secpanel 1:0.6.1-3
07:48:09 Deleting outdated reference-chroot-metadata.dat
07:48:09 Testing package stretch2buster-rcmd/fpc 3.0.4+dfsg-19
07:57:42 Deleting outdated reference-chroot-metadata.dat
07:57:42 Testing package stretch2buster-rcmd/task-ukrainian-desktop 3.43
08:03:23 Deleting outdated reference-chroot-metadata.dat
08:03:23 Testing package stretch2buster-rcmd/tictactoe-ng 0.3.2.1-1.1
08:14:27 Deleting outdated reference-chroot-metadata.dat
08:14:27 Testing package stretch2buster-rcmd/education-desktop-gnome 2.10.25