quotaon.service is already installed through dist_systemunit_DATA, so it doesn't need to be added to nodist_systemunit_DATA. Installing the same file twice results in a race condition where the install process can fail.
Created attachment 80705 [details] [review] Patch Yes, we did actually hit this race. In a release-candidate build too!
Applied in http://cgit.freedesktop.org/systemd/systemd/commit/?id=3c527fd1. Thanks. (The file is generated, so it should be on the nodist_ list, not dist_.)
I suddenly realised that it's probably generated whilst I was trying to get to sleep last night, but by the time I woke up you'd already dealt with the bug. :)
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.