Comment 21 for bug 1850667

After enabling the unified cgroups hierarchy in systemd and running some tests, I can confirm that most things are working as expected, except for snapd.

https://bileto.ubuntu.com/excuses/4602/impish.html

The Bileto autopkgtests show (ignoring two unrelated/flaky failures in universe packages: suricata & mosquitto) that:

* The systemd "tests-in-lxd" test fails, for snapd's "WARNING: cgroup v2 is not fully supported yet, proceeding with partial confinement" stderr output. If that stderr output is muted/ignored (by modifying autopkgtests itself) the test passes, as tested locally.

* The snapd "autopkgtest:adt-local:tests/smoke/sandbox" spread test fails with an "all ubuntu systems must have strict confinement" error message.