It appears that 20+ tests are timing out on Mac. We should temporarily disable multi-process mode and see what happens.
Created attachment 117895 [details]
Committed r102013: <http://trac.webkit.org/changeset/102013>
We have historically turned of various NRWT behaviors on a bot-by-bot basis if necessary. It's possible these machines just need more RAM as Adam mentioned, and we should keep parallel testing on mac, but disable just these machines. I'm open to either option of course: