Comment # 4 on bug 1210121 from Johannes Segitz

Thanks for providing the script. The issue is that you have
  6 ExecStart=/usr/bin/sh /usr/local/sbin/setup.sh
in SetupUnit.service. Since you execute bash, not setup.sh, the service doesn't
properly transition. Change that to 
  6 ExecStart=/usr/local/sbin/setup.sh
and the error goes away