With systemd version 226 systemd apparently runs in a different cgroup
(init.scope) which causes problems:
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1497420
https://bugzilla.proxmox.com/show_bug.cgi?id=755
Apparently it keeps trying to restart systemd-journald, which is
accompanied by
Thanks for taking the time to investigate this. I noticed this as well
(https://github.com/lxc/lxc/issues/663). The new init.scope slice has been
introduced in systemd 226 in order to deal with unified cgroups which have been
introduced into the Kernel in version 4.2.1 or 4.2.2. The details why
