Comment 2 for bug 1934108

The cgroup/freezer error is a different bug, being tracked here: https://bugs.launchpad.net/bugs/1933128

Please see the last few comments of that bug for potential workarounds.

I think these are two different bugs. The debug-log output from this bug's description clearly shows the command failing with:

mount --rbind /dev /tmp/snap.rootfs_hHlR10//dev: No such file or directory

Not the freezer cgroup thing.