Comment 4 for bug 1901847

Today this happened again. I installed a bunch of updates with update-manager, was prompted to reboot, checked with 'snap refresh --list' to see if there were any snap updates pending (there weren't), and let update-manager do the reboot.

snapd took 1m30s to shut down.

lapkr. 11 09:08:29 blynas systemd[1]: Stopped D-Bus System Message Bus.
lapkr. 11 09:08:31 blynas dbus-daemon[992]: [system] Activating systemd to hand-off: service name='org.freedesktop.PackageKit' unit='packagekit.service' requested by ':1.2851' (uid=0 pid=3021119 comm="/usr/bin/gdbus call --system --dest org.freedeskto" label="unconfined")
lapkr. 11 09:08:38 blynas AptDaemon.Worker[2993491]: INFO: Finished transaction /org/debian/apt/transaction/dff292185c0a4a19af71998f9f7e813c
lapkr. 11 09:08:38 blynas org.debian.apt[2993491]: /usr/lib/python3/dist-packages/aptdaemon/progress.py:490: Warning: Source ID 49 was not found when attempting to remove it
lapkr. 11 09:08:38 blynas org.debian.apt[2993491]: GLib.source_remove(id)
lapkr. 11 09:08:38 blynas org.debian.apt[2993491]: /usr/lib/python3/dist-packages/aptdaemon/progress.py:490: Warning: Source ID 50 was not found when attempting to remove it
lapkr. 11 09:08:38 blynas org.debian.apt[2993491]: GLib.source_remove(id)
lapkr. 11 09:08:38 blynas org.debian.apt[2993491]: /usr/lib/python3/dist-packages/aptdaemon/progress.py:490: Warning: Source ID 51 was not found when attempting to remove it
lapkr. 11 09:08:38 blynas org.debian.apt[2993491]: GLib.source_remove(id)
lapkr. 11 09:08:38 blynas org.debian.apt[2993491]: 09:08:38 AptDaemon.Worker [INFO]: Finished transaction /org/debian/apt/transaction/dff292185c0a4a19af71998f9f7e813c
lapkr. 11 09:08:53 blynas snapd[1016]: daemon.go:586: WARNING: cannot gracefully shut down in-flight snapd API activity within: 25s
lapkr. 11 09:08:56 blynas dbus-daemon[992]: [system] Failed to activate service 'org.freedesktop.PackageKit': timed out (service_start_timeout=25000ms)
lapkr. 11 09:08:56 blynas dbus-daemon[992]: [system] Failed to activate service 'org.freedesktop.systemd1': timed out (service_start_timeout=25000ms)
lapkr. 11 09:09:58 blynas systemd[1]: snapd.service: State 'stop-sigterm' timed out. Killing.
lapkr. 11 09:09:58 blynas systemd[1]: snapd.service: Killing process 1016 (snapd) with signal SIGKILL.
lapkr. 11 09:09:58 blynas systemd[1]: snapd.service: Main process exited, code=killed, status=9/KILL
lapkr. 11 09:09:58 blynas systemd[1]: snapd.service: Failed with result 'timeout'.
lapkr. 11 09:09:58 blynas systemd[1]: Stopped Snap Daemon.
lapkr. 11 09:09:58 blynas systemd[1]: snapd.service: Triggering OnFailure= dependencies.
lapkr. 11 09:09:58 blynas systemd[1]: Requested transaction contradicts existing jobs: Transaction for snapd.failure.service/start is destructive (swapfile.swap has 'stop' job queued, but 'start' is included in transaction).
lapkr. 11 09:09:58 blynas systemd[1]: snapd.service: Failed to enqueue OnFailure= job, ignoring: Transaction for snapd.failure.service/start is destructive (swapfile.swap has 'stop' job queued, but 'start' is included in transaction).
lapkr. 11 09:09:58 blynas systemd[1]: Stopped target Basic System.