It checks all mounts if they have a lost+found directory by default, but that is (almost) useless since fsck will create them if necessary. This causes cronspam. Let's find a way to disable this.
ah! it seems only on precise and not trusty/jessie though? if so I think we can just let it die off unless it is causing problems, and quick and easy and lame way would be to distribute a different file via puppet