I suspect this reloading of profiles from the core snap has something to do with the failure.
Oct 11 21:46:42 ubuntu systemd[1]: Mounting Mount unit for core, revision 5548... Oct 11 21:46:42 ubuntu systemd[1]: Mounted Mount unit for core, revision 5548. Oct 11 21:46:43 ubuntu snapd[745]: backend.go:303: cannot create host snap-confine apparmor configuration: cannot synchronize snap-confine apparmor profile: open /var/lib/snapd/apparmor/profiles/snap-confine.core.5548.7GMky4P363H7~: no such file or directory Oct 11 21:46:43 ubuntu audit[1095]: AVC apparmor="STATUS" operation="profile_load" profile="unconfined" name="snap-update-ns.core" pid=1095 comm="apparmor_parser" Oct 11 21:46:43 ubuntu kernel: audit: type=1400 audit(1539294403.064:14): apparmor="STATUS" operation="profile_load" profile="unconfined" name="snap-update-ns.core" pid=1095 comm="apparmor_parser" Oct 11 21:46:43 ubuntu audit[1097]: AVC apparmor="STATUS" operation="profile_load" profile="unconfined" name="snap.core.hook.configure" pid=1097 comm="apparmor_parser" Oct 11 21:46:43 ubuntu kernel: audit: type=1400 audit(1539294403.148:15): apparmor="STATUS" operation="profile_load" profile="unconfined" name="snap.core.hook.configure" pid=1097 comm="apparmor_parser"
I suspect this reloading of profiles from the core snap has something to do with the failure.
Oct 11 21:46:42 ubuntu systemd[1]: Mounting Mount unit for core, revision 5548... snapd/apparmor/ profiles/ snap-confine. core.5548. 7GMky4P363H7~ : no such file or directory "profile_ load" profile= "unconfined" name="snap- update- ns.core" pid=1095 comm="apparmor_ parser" 3.064:14) : apparmor="STATUS" operation= "profile_ load" profile= "unconfined" name="snap- update- ns.core" pid=1095 comm="apparmor_ parser" "profile_ load" profile= "unconfined" name="snap. core.hook. configure" pid=1097 comm="apparmor_ parser" 3.148:15) : apparmor="STATUS" operation= "profile_ load" profile= "unconfined" name="snap. core.hook. configure" pid=1097 comm="apparmor_ parser"
Oct 11 21:46:42 ubuntu systemd[1]: Mounted Mount unit for core, revision 5548.
Oct 11 21:46:43 ubuntu snapd[745]: backend.go:303: cannot create host snap-confine apparmor configuration: cannot synchronize snap-confine apparmor profile: open /var/lib/
Oct 11 21:46:43 ubuntu audit[1095]: AVC apparmor="STATUS" operation=
Oct 11 21:46:43 ubuntu kernel: audit: type=1400 audit(153929440
Oct 11 21:46:43 ubuntu audit[1097]: AVC apparmor="STATUS" operation=
Oct 11 21:46:43 ubuntu kernel: audit: type=1400 audit(153929440