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

[Cron Daemon]

List: announce: problem processing /var/lib/mailman/lists/announce/digest.mbox:
[Errno 13] Permission denied: '/var/lib/mailman/archives/private/announce/attachments/20161214/9002dca6/attachments.lock.lists.phx.ovirt.org.11455.19'
List: devel: problem processing /var/lib/mailman/lists/devel/digest.mbox:
[Errno 13] Permission denied: '/var/lib/mailman/archives/private/devel/attachments/20161214'