I was trawling for specs to fix and found that many tagged specs already pass.
Here's an initial batch of specs passing on my machine. If Travis agrees that these look good, I'll send some follow-up pulls untagging more.
Untag a number of passing specs
Yup, some of these definitely still make Travis cranky. I'll rerun my experiment on a linux box and see if I can get a more reliable list to untag.