There was an uplift since the patch in bug 1056973 was written, so these tests are now trying to run on an unsupported tree.
Created attachment 8484925 [details] [diff] [review] Disable web-platform-tests-* on aurora, Bump the minimum version to 35.
http://hg.mozilla.org/build/buildbot-configs/a33917fe7586 12:01 < RyanVM> i can haz patch + reconfig? We have a patch, so I guess step 2 is "reconfig" :)
Merged to production, and deployed.