See bug 697479 comment 25. I tried reproducing it locally on my Win64 box. Used the configure options from the build log. Tests ran like a champ for me. :-P The tests that are failing are brand-new tests in that patch, so I know there's something wrong with my code, not build machine weirdness. Just don't know what.
I've set aside w64-ix-slave06 for you. Let me know if you need any help connecting to it.
Jason: just comment here when you're done with the slave and whoever is on buildduty will repatriate it.
[14:20] <aki|buildduty> jorendorff: still using w64-ix-slave06 ? [14:20] <jorendorff> aki: No. Feel free to take it back / recycle it / crush it into a cube. [14:21] <jorendorff> And *thanks*, it was invaluable. [14:21] <aki|buildduty> ok, thanks