It was a rogue process that I killed an hour ago that shouldn't have been running using some old code.
For future you can raise issues here - https://github.com/jdlrobson/Barry-the-Browser-Test-Bot
Out of interest, any process/things we can learn for this going forward? Should there be a rate limit on the api? Protection against empty pastes? Some way of notifying the bot (any e-mails to him would go to mailbox)?
Empty pastes should only occur if the script has been setup incorrectly. I'm adding further protection as we speak. Please raise an issue on https://github.com/jdlrobson/Barry-the-Browser-Test-Bot/issues for providing link backs - that seems like a good idea.
Ideally the user doing this would be a bot in phabricator and would show up here https://phabricator.wikimedia.org/people/query/HIYqhD_44QzG/#R. I saw this outside of this task and disabled the user mainly because our policy has been to disable users that exhibit bot like behavior but are not known to be bots.
Can I delete pastes for the bot up to this point to clean them up? This bot has created 727 pastes to this point.