Comment 13 for bug 1351306

Right,
yesterday when systemd (208-7ubuntu4) and sysvinit (2.88dsf-41ubuntu17) were published in Utopic pocket release,
  I upgraded my setup.
After that I installed systemd-sysv and purged upstart, upstart-bin, ureadahead and libjson0.
I am using systemd booting and it works just fine (with no upstart installed).