Journal from the current boot:

Mar 16 13:06:37 $HOSTNAME systemd[1]: Starting Snap Daemon...
Mar 16 13:06:41 $HOSTNAME snapd[725]: AppArmor status: apparmor is enabled and all features are available
Mar 16 13:06:41 $HOSTNAME snapd[725]: daemon.go:343: started snapd/2.44~pre2+git1424.gc370566 (series 16) ubuntu-core/18 (arm64) linux/4.19.59-rt24-icx23.
Mar 16 13:06:41 $HOSTNAME snapd[725]: daemon.go:436: adjusting startup timeout by 1m15s (pessimistic estimate of 30s plus 5s per snap)
Mar 16 13:07:32 $HOSTNAME systemd[1]: Started Snap Daemon.
Mar 16 13:12:05 $HOSTNAME snapd[725]: devicestate.go:177: installing unasserted gadget "rexroth-arch01-hw"
Mar 16 13:15:30 $HOSTNAME snapd[725]: udevmon.go:149: udev event error: Unable to parse uevent, err: no buffer space available
Mar 16 13:19:25 $HOSTNAME snapd[725]: storehelpers.go:438: cannot refresh: snap has no updates available: "core", "core18", "snapd"
Mar 16 13:27:33 $HOSTNAME snapd[725]: storehelpers.go:438: cannot refresh: snap has no updates available: "core", "core18", "snapd"
Mar 16 13:27:33 $HOSTNAME snapd[725]: autorefresh.go:397: auto-refresh: all snaps are up-to-date
Mar 16 15:36:57 $HOSTNAME snapd[725]: storehelpers.go:438: cannot refresh: snap has no updates available: "core", "core18"
Mar 16 15:37:40 $HOSTNAME systemd[1]: snapd.service: Current command vanished from the unit file, execution of the command list won't be resumed.
Mar 16 15:37:41 $HOSTNAME snapd[725]: daemon.go:539: gracefully waiting for running hooks
Mar 16 15:37:41 $HOSTNAME snapd[725]: daemon.go:541: done waiting for running hooks
Mar 16 15:38:06 $HOSTNAME snapd[725]: cannot run daemon: context deadline exceeded
Mar 16 15:38:06 $HOSTNAME systemd[1]: snapd.service: Main process exited, code=exited, status=1/FAILURE
Mar 16 15:38:06 $HOSTNAME systemd[1]: snapd.service: Failed with result 'exit-code'.
Mar 16 15:38:06 $HOSTNAME systemd[1]: snapd.service: Triggering OnFailure= dependencies.
Mar 16 15:38:07 $HOSTNAME systemd[1]: snapd.service: Service hold-off time over, scheduling restart.
Mar 16 15:38:07 $HOSTNAME systemd[1]: snapd.service: Scheduled restart job, restart counter is at 1.
Mar 16 15:38:07 $HOSTNAME systemd[1]: Stopped Snap Daemon.
Mar 16 15:38:07 $HOSTNAME systemd[1]: Starting Snap Daemon...
Mar 16 15:38:07 $HOSTNAME systemd[1]: Stopped Snap Daemon.
Mar 16 15:38:23 $HOSTNAME systemd[1]: Starting Snap Daemon...
Mar 16 15:38:23 $HOSTNAME snapd[2386]: AppArmor status: apparmor is enabled and all features are available
Mar 16 15:38:23 $HOSTNAME snapd[2386]: daemon.go:343: started snapd/2.44~pre2+git1424.gc370566 (series 16) ubuntu-core/18 (arm64) linux/4.19.59-rt24-icx23.
Mar 16 15:38:24 $HOSTNAME snapd[2386]: daemon.go:436: adjusting startup timeout by 1m15s (pessimistic estimate of 30s plus 5s per snap)
Mar 16 15:38:24 $HOSTNAME systemd[1]: Started Snap Daemon.
Mar 16 15:38:26 $HOSTNAME snapd[2386]: daemon.go:539: gracefully waiting for running hooks
Mar 16 15:38:27 $HOSTNAME snapd[2386]: daemon.go:541: done waiting for running hooks
Mar 16 15:38:32 $HOSTNAME systemd[1]: snapd.service: Service hold-off time over, scheduling restart.
Mar 16 15:38:32 $HOSTNAME systemd[1]: snapd.service: Scheduled restart job, restart counter is at 1.
Mar 16 15:38:32 $HOSTNAME systemd[1]: Stopped Snap Daemon.
Mar 16 15:38:32 $HOSTNAME systemd[1]: Starting Snap Daemon...
Mar 16 15:38:32 $HOSTNAME snapd[2463]: AppArmor status: apparmor is enabled and all features are available
Mar 16 15:38:32 $HOSTNAME snapd[2463]: daemon.go:343: started snapd/2.44~pre2+git1424.gc370566 (series 16) ubuntu-core/18 (arm64) linux/4.19.59-rt24-icx23.
Mar 16 15:38:33 $HOSTNAME snapd[2463]: daemon.go:436: adjusting startup timeout by 1m15s (pessimistic estimate of 30s plus 5s per snap)
Mar 16 15:38:33 $HOSTNAME systemd[1]: Started Snap Daemon.
Mar 16 15:38:39 $HOSTNAME snapd[2463]: handlers.go:495: Reported install problem for "snapd" as already-reported
Mar 16 15:41:16 $HOSTNAME snapd[2463]: storehelpers.go:438: cannot refresh: snap has no updates available: "core", "core18"
Mar 16 15:42:09 $HOSTNAME systemd[1]: snapd.service: Current command vanished from the unit file, execution of the command list won't be resumed.
Mar 16 15:42:10 Mar 16 13:06:37 $HOSTNAME systemd[1]: Starting Snap Daemon...
Mar 16 13:06:41 $HOSTNAME snapd[725]: AppArmor status: apparmor is enabled and all features are available
Mar 16 13:06:41 $HOSTNAME snapd[725]: daemon.go:343: started snapd/2.44~pre2+git1424.gc370566 (series 16) ubuntu-core/18 (arm64) linux/4.19.59-rt24-icx23.
Mar 16 13:06:41 $HOSTNAME snapd[725]: daemon.go:436: adjusting startup timeout by 1m15s (pessimistic estimate of 30s plus 5s per snap)
Mar 16 13:07:32 $HOSTNAME systemd[1]: Started Snap Daemon.
Mar 16 13:12:05 $HOSTNAME snapd[725]: devicestate.go:177: installing unasserted gadget "rexroth-arch01-hw"
Mar 16 13:15:30 $HOSTNAME snapd[725]: udevmon.go:149: udev event error: Unable to parse uevent, err: no buffer space available
Mar 16 13:19:25 $HOSTNAME snapd[725]: storehelpers.go:438: cannot refresh: snap has no updates available: "core", "core18", "snapd"
Mar 16 13:27:33 $HOSTNAME snapd[725]: storehelpers.go:438: cannot refresh: snap has no updates available: "core", "core18", "snapd"
Mar 16 13:27:33 $HOSTNAME snapd[725]: autorefresh.go:397: auto-refresh: all snaps are up-to-date
Mar 16 15:36:57 $HOSTNAME snapd[725]: storehelpers.go:438: cannot refresh: snap has no updates available: "core", "core18"
Mar 16 15:37:40 $HOSTNAME systemd[1]: snapd.service: Current command vanished from the unit file, execution of the command list won't be resumed.
Mar 16 15:37:41 $HOSTNAME snapd[725]: daemon.go:539: gracefully waiting for running hooks
Mar 16 15:37:41 $HOSTNAME snapd[725]: daemon.go:541: done waiting for running hooks
Mar 16 15:38:06 $HOSTNAME snapd[725]: cannot run daemon: context deadline exceeded
Mar 16 15:38:06 $HOSTNAME systemd[1]: snapd.service: Main process exited, code=exited, status=1/FAILURE
Mar 16 15:38:06 $HOSTNAME systemd[1]: snapd.service: Failed with result 'exit-code'.
Mar 16 15:38:06 $HOSTNAME systemd[1]: snapd.service: Triggering OnFailure= dependencies.
Mar 16 15:38:07 $HOSTNAME systemd[1]: snapd.service: Service hold-off time over, scheduling restart.
Mar 16 15:38:07 $HOSTNAME systemd[1]: snapd.service: Scheduled restart job, restart counter is at 1.
Mar 16 15:38:07 $HOSTNAME systemd[1]: Stopped Snap Daemon.
Mar 16 15:38:07 $HOSTNAME systemd[1]: Starting Snap Daemon...
Mar 16 15:38:07 $HOSTNAME systemd[1]: Stopped Snap Daemon.
Mar 16 15:38:23 $HOSTNAME systemd[1]: Starting Snap Daemon...
Mar 16 15:38:23 $HOSTNAME snapd[2386]: AppArmor status: apparmor is enabled and all features are available
Mar 16 15:38:23 $HOSTNAME snapd[2386]: daemon.go:343: started snapd/2.44~pre2+git1424.gc370566 (series 16) ubuntu-core/18 (arm64) linux/4.19.59-rt24-icx23.
Mar 16 15:38:24 $HOSTNAME snapd[2386]: daemon.go:436: adjusting startup timeout by 1m15s (pessimistic estimate of 30s plus 5s per snap)
Mar 16 15:38:24 $HOSTNAME systemd[1]: Started Snap Daemon.
Mar 16 15:38:26 $HOSTNAME snapd[2386]: daemon.go:539: gracefully waiting for running hooks
Mar 16 15:38:27 $HOSTNAME snapd[2386]: daemon.go:541: done waiting for running hooks
Mar 16 15:38:32 $HOSTNAME systemd[1]: snapd.service: Service hold-off time over, scheduling restart.
Mar 16 15:38:32 $HOSTNAME systemd[1]: snapd.service: Scheduled restart job, restart counter is at 1.
Mar 16 15:38:32 $HOSTNAME systemd[1]: Stopped Snap Daemon.
Mar 16 15:38:32 $HOSTNAME systemd[1]: Starting Snap Daemon...
Mar 16 15:38:32 $HOSTNAME snapd[2463]: AppArmor status: apparmor is enabled and all features are available
Mar 16 15:38:32 $HOSTNAME snapd[2463]: daemon.go:343: started snapd/2.44~pre2+git1424.gc370566 (series 16) ubuntu-core/18 (arm64) linux/4.19.59-rt24-icx23.
Mar 16 15:38:33 $HOSTNAME snapd[2463]: daemon.go:436: adjusting startup timeout by 1m15s (pessimistic estimate of 30s plus 5s per snap)
Mar 16 15:38:33 $HOSTNAME systemd[1]: Started Snap Daemon.
Mar 16 15:38:39 $HOSTNAME snapd[2463]: handlers.go:495: Reported install problem for "snapd" as already-reported
Mar 16 15:41:16 $HOSTNAME snapd[2463]: storehelpers.go:438: cannot refresh: snap has no updates available: "core", "core18"
Mar 16 15:42:09 $HOSTNAME systemd[1]: snapd.service: Current command vanished from the unit file, execution of the command list won't be resumed.
Mar 16 15:42:10 $HOSTNAME snapd[2463]: daemon.go:539: gracefully waiting for running hooks
Mar 16 15:42:10 $HOSTNAME snapd[2463]: daemon.go:541: done waiting for running hooks
Mar 16 15:42:11 $HOSTNAME systemd[1]: snapd.service: Service hold-off time over, scheduling restart.
Mar 16 15:42:11 $HOSTNAME systemd[1]: snapd.service: Scheduled restart job, restart counter is at 2.
Mar 16 15:42:11 $HOSTNAME systemd[1]: Stopped Snap Daemon.
Mar 16 15:42:11 $HOSTNAME systemd[1]: Starting Snap Daemon...
Mar 16 15:42:13 $HOSTNAME snapd[2731]: AppArmor status: apparmor is enabled and all features are available
Mar 16 15:42:14 $HOSTNAME snapd[2731]: patch.go:64: Patching system state level 6 to sublevel 1...
Mar 16 15:42:14 $HOSTNAME snapd[2731]: patch.go:64: Patching system state level 6 to sublevel 2...
Mar 16 15:42:14 $HOSTNAME snapd[2731]: patch.go:64: Patching system state level 6 to sublevel 3...
Mar 16 15:42:14 $HOSTNAME snapd[2731]: daemon.go:343: started snapd/2.44~pre2+git1580.g2ab7b46 (series 16) ubuntu-core/18 (arm64) linux/4.19.59-rt24-icx23.
Mar 16 15:42:14 $HOSTNAME snapd[2731]: daemon.go:436: adjusting startup timeout by 1m15s (pessimistic estimate of 30s plus 5s per snap)
Mar 16 15:43:04 $HOSTNAME systemd[1]: Started Snap Daemon.
Mar 16 15:43:14 $HOSTNAME snapd[2731]: storehelpers.go:438: cannot refresh snap "snapd": snap has no updates available
 snapd[2463]: daemon.go:539: gracefully waiting for running hooks
Mar 16 15:42:10 $HOSTNAME snapd[2463]: daemon.go:541: done waiting for running hooks
Mar 16 15:42:11 $HOSTNAME systemd[1]: snapd.service: Service hold-off time over, scheduling restart.
Mar 16 15:42:11 $HOSTNAME systemd[1]: snapd.service: Scheduled restart job, restart counter is at 2.
Mar 16 15:42:11 $HOSTNAME systemd[1]: Stopped Snap Daemon.
Mar 16 15:42:11 $HOSTNAME systemd[1]: Starting Snap Daemon...
Mar 16 15:42:13 $HOSTNAME snapd[2731]: AppArmor status: apparmor is enabled and all features are available
Mar 16 15:42:14 $HOSTNAME snapd[2731]: patch.go:64: Patching system state level 6 to sublevel 1...
Mar 16 15:42:14 $HOSTNAME snapd[2731]: patch.go:64: Patching system state level 6 to sublevel 2...
Mar 16 15:42:14 $HOSTNAME snapd[2731]: patch.go:64: Patching system state level 6 to sublevel 3...
Mar 16 15:42:14 $HOSTNAME snapd[2731]: daemon.go:343: started snapd/2.44~pre2+git1580.g2ab7b46 (series 16) ubuntu-core/18 (arm64) linux/4.19.59-rt24-icx23.
Mar 16 15:42:14 $HOSTNAME snapd[2731]: daemon.go:436: adjusting startup timeout by 1m15s (pessimistic estimate of 30s plus 5s per snap)
Mar 16 15:43:04 $HOSTNAME systemd[1]: Started Snap Daemon.
Mar 16 15:43:14 $HOSTNAME snapd[2731]: storehelpers.go:438: cannot refresh snap "snapd": snap has no updates available