[Mailman] Cron <mailman at lists> /usr/lib/mailman/cron/gate_news

[Cron Daemon]

Traceback (most recent call last):
  File "/usr/lib/mailman/cron/gate_news", line 293, in ?
    main()
  File "/usr/lib/mailman/cron/gate_news", line 268, in main
    lock.lock(timeout=0.5)
  File "usr/lib/mailman/Mailman/LockFile.py", line 243, in lock
  File "usr/lib/mailman/Mailman/LockFile.py", line 422, in __write
IOError: [Errno 28] No space left on device: '/var/lock/mailman/gate_news.lock.lists.11772.0'