Description of problem:
On a fresh default F23 Alpha installation after some reboots `systemctl status` shows that the unit file systemd-tmpfiles-setup.service has failed.

$ systemctl status -l systemd-tmpfiles-setup.service 
● 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 Do 2015-09-03 16:46:11 CEST; 23min ago
     Docs: man:tmpfiles.d(5)
           man:systemd-tmpfiles(8)
  Process: 1067 ExecStart=/usr/bin/systemd-tmpfiles --create --remove --boot --exclude-prefix=/dev (code=exited, status=1/FAILURE)
 Main PID: 1067 (code=exited, status=1/FAILURE)

Sep 03 16:46:11 hostname systemd[1]: Starting Create Volatile Files and Directories...
Sep 03 16:46:11 hostname systemd-tmpfiles[1067]: rm_rf(/var/tmp/dnf-username-u0yz366f/locks/9777ed853bf3f1804d119c362700ca23): Operation not permitted
Sep 03 16:46:11 hostname systemd-tmpfiles[1067]: rm_rf(/var/tmp/dnf-abrt-93ep4jy_/locks/401341be3cefb59697dfc16a3b847f3d): Operation not permitted
Sep 03 16:46:11 hostname systemd[1]: systemd-tmpfiles-setup.service: Main process exited, code=exited, status=1/FAILURE
Sep 03 16:46:12 hostname systemd[1]: Failed to start Create Volatile Files and Directories.
Sep 03 16:46:12 hostname systemd[1]: systemd-tmpfiles-setup.service: Unit entered failed state.
Sep 03 16:46:12 hostname systemd[1]: systemd-tmpfiles-setup.service: Failed with result 'exit-code'

Version-Release number of selected component (if applicable):
systemd-222-2.fc23.x86_64