systemd-tmpfiles-setup fails to set quota

[heftig]

● systemd-tmpfiles-setup.service - Create Volatile Files and Directories
   Loaded: loaded (/usr/lib/systemd/system/systemd-tmpfiles-setup.service; static; vendor preset: disabled)
   Active: failed (Result: exit-code) since Sat 2015-11-07 18:31:43 CET; 30s ago
     Docs: man:tmpfiles.d(5)
           man:systemd-tmpfiles(8)
  Process: 440 ExecStart=/usr/bin/systemd-tmpfiles --create --remove --boot --exclude-prefix=/dev (code=exited, status=1/FAILURE)
 Main PID: 440 (code=exited, status=1/FAILURE)

Nov 07 18:31:43 philomeena systemd[1]: Starting Create Volatile Files and Directories...
Nov 07 18:31:43 philomeena systemd-tmpfiles[440]: Failed to adjust quota for subvolume "/var/lib/machines": No such file or directory
Nov 07 18:31:43 philomeena systemd[1]: systemd-tmpfiles-setup.service: Main process exited, code=exited, status=1/FAILURE
Nov 07 18:31:43 philomeena systemd[1]: Failed to start Create Volatile Files and Directories.
Nov 07 18:31:43 philomeena systemd[1]: systemd-tmpfiles-setup.service: Unit entered failed state.
Nov 07 18:31:43 philomeena systemd[1]: systemd-tmpfiles-setup.service: Failed with result 'exit-code'.

Happens consistently. The btrfs / used does not have quota support enabled.