Comment 10 for bug 1651518

------- Comment From <email address hidden> 2017-04-13 17:19 EDT-------
systemd-231-9ubuntu4 looks good for yakkety. It appears that there are other changes since user-0.slice was no longer present, but the parent pids.max is now set to "max":

root@kwr-yakkety:~# cat /sys/fs/cgroup/pids/user.slice/user-0.slice/pids.max
cat: /sys/fs/cgroup/pids/user.slice/user-0.slice/pids.max: No such file or directory

root@kwr-yakkety:~# cat /sys/fs/cgroup/pids/user.slice/pids.max

We are now just waiting on xenial for closure.