Bug#769370: cannot run systemd --test as root nor as not root

[積丹尼 Dan Jacobson]

Package: systemd
Version: 215-5+b1
File: /usr/share/man/man1/systemd.1.gz

The user sees:

OPTIONS
       The following options are understood:

       --test
           Determine startup sequence, dump it and exit. This is an option
           useful for debugging only.


The user tries:
$ systemd --test
Failed to create root cgroup hierarchy: Permission denied
Failed to allocate manager object: Permission denied
$ su
# systemd --test
Don't run test mode as root.

Therefore the man page should say how one is supposed to run it.