The changes to the mozharness script landed, we should schedule them on Ash and Cedar. I still need to land gecko changes on both branches, but I can do that in parallel (or after) this bug.

I didn't realize Ash didn't have any exceptions anymore, so decided to just make do with cedar (shouldn't really need it on ash anyway). I also noticed that the b2g desktop osx platform didn't have a suite config for mochitest (which is why it's failing on cedar), so I fixed that while I was at it. I can file a separate bug though if you'd prefer.

Comment on attachment 8348859 [details] [diff] [review] Patch 1.0 - schedule b2g desktop reftests on cedar Thanks! I think we only really need to copy the list when it's by itself (e.g. BRANCHES[...] = TEST[:] ); when we concatenate lists we create a new one anyway. I think it's only a minor perf hit, and isn't the only example of this; just noting. The builder diffs look good: (bb08)deathduck:/src/reviews [11:21:43] 540$ diff linux{clean,dirty} 3617a3618 > b2g_ubuntu64_vm cedar opt test reftest ScriptFactory 3620a3622 > b2g_ubuntu32_vm cedar opt test reftest ScriptFactory (bb08)deathduck:/src/reviews [11:21:47] 541$ diff mac{clean,dirty} 1973a1974 > b2g_macosx64 cedar opt test reftest ScriptFactory

Good point. I removed the slices: https://hg.mozilla.org/build/buildbot-configs/rev/c329e84ccc56

In production.