Unlocking the secret of life, apparently. At least, that's what it says it's doing now, after complaining that nobody else had got this far. It's been about 5 minutes...

...maybe it would have been wise to start with a table of existing entries that could be resolved quickly. I don't use Git and couldn't think of any accounts off the top of my head, so I just set 'abc' against 'xyz' on the theory that those usernames were likely to exist. UPDATE: I'm getting the behavior with Obama v Romney and indeed Jesse P v Remy G. Maybe the server's just overloaded...