Comment 1 for bug 2059831

Looks like this comes down to subiquity failing to verify the gnome-42-2204 snap. Due to using /tmp, perhaps the machine was out of memory?

Mar 30 14:26:43 ubuntu-studio subiquity_log.3897[6322]: start: cmd-install/stage-extract/builtin/cmd-extract: acquiring and extracting image from cp:///tmp/tmpxi_uwxlb/mount
Mar 30 14:26:43 ubuntu-studio subiquity_log.3897[6322]: Setting up Trivial Source for stack /tmp/tmpxi_uwxlb/mount
Mar 30 14:26:43 ubuntu-studio subiquity_log.3897[6322]: Running command ['rsync', '-aXHAS', '--one-file-system', '/tmp/tmpxi_uwxlb/mount/', '.'] with allowed return codes [0] (capture=False)
Mar 30 14:30:48 ubuntu-studio subiquity_log.3897[6322]: rsync: [sender] read errors mapping "/tmp/tmpxi_uwxlb/mount/var/lib/snapd/snaps/gnome-42-2204_172.snap": Input/output error (5)
Mar 30 14:31:00 ubuntu-studio subiquity_log.3897[6322]: rsync: [sender] read errors mapping "/tmp/tmpxi_uwxlb/mount/var/lib/snapd/snaps/gnome-42-2204_172.snap": Input/output error (5)
Mar 30 14:31:00 ubuntu-studio subiquity_log.3897[6322]: ERROR: var/lib/snapd/snaps/gnome-42-2204_172.snap failed verification -- update discarded.
Mar 30 14:31:02 ubuntu-studio subiquity_log.3897[6322]: rsync: [sender] read errors mapping "/tmp/tmpxi_uwxlb/mount/var/lib/snapd/seed/snaps/gnome-42-2204_172.snap": Input/output error (5)
Mar 30 14:31:05 ubuntu-studio subiquity_log.3897[6322]: rsync: [sender] read errors mapping "/tmp/tmpxi_uwxlb/mount/var/lib/snapd/seed/snaps/gnome-42-2204_172.snap": Input/output error (5)
Mar 30 14:31:05 ubuntu-studio subiquity_log.3897[6322]: ERROR: var/lib/snapd/seed/snaps/gnome-42-2204_172.snap failed verification -- update discarded.