webkitpy.layout_tests.port.chromium_win_unittest.ChromiumWinTest.test_default_worker_model has been failing on apple-windows-13 since somewhere between r83760 and r83769. It's not failing on any of our other Windows slaves.
http://build.webkit.org/builders/Windows%20XP%20Debug%20%28Tests%29/builds/27554 did not fail
r83764 seems almost certainly to blame: http://trac.webkit.org/changeset/83764
Whoops. Yeah, that would do it. The fix is simple (to wrap the check in an 'if multiprocessing_is_available:' block) but I won't be able to get to it until later this morning.
I guess maybe apple-windows-13 has a different version of Python from the other bots?
Indeed, apple-windows-13 has 2.5.2, apple-windows-14 has 2.6.5.
I really wish all slaves on a particular builder were clones of each other!
Created attachment 89617 [details]
Committed r83880: <http://trac.webkit.org/changeset/83880>