Looks like the same type of bustage from bug 914111 we were hitting yesterday before aki's follow-up push. https://tbpl.mozilla.org/php/getParsedLog.php?id=33463281&tree=Try 07:59:51 INFO - ##### 07:59:51 INFO - ##### Running upload step. 07:59:51 INFO - ##### 07:59:51 INFO - Running main action method: upload 07:59:51 FATAL - Uncaught exception: Traceback (most recent call last): 07:59:51 FATAL - File "/builds/slave/b2g_try_emu_dep-00000000000000/scripts/mozharness/base/script.py", line 1155, in run 07:59:51 FATAL - self.run_action(action) 07:59:51 FATAL - File "/builds/slave/b2g_try_emu_dep-00000000000000/scripts/mozharness/base/script.py", line 1097, in run_action 07:59:51 FATAL - self._possibly_run_method(method_name, error_if_missing=True) 07:59:51 FATAL - File "/builds/slave/b2g_try_emu_dep-00000000000000/scripts/mozharness/base/script.py", line 1038, in _possibly_run_method 07:59:51 FATAL - return getattr(self, method_name)() 07:59:51 FATAL - File "scripts/scripts/b2g_build.py", line 1284, in upload 07:59:51 FATAL - upload_path = self.config['upload']['default'][upload_path_key] % replace_dict 07:59:51 FATAL - KeyError: u'rev' 07:59:51 FATAL - Running post_fatal callback... 07:59:51 FATAL - Exiting -1

Ugh, sorry. Fix pushed: http://hg.mozilla.org/build/mozharness/rev/73004fe60870

Seeing some greens: https://tbpl.mozilla.org/?tree=Try&jobname=emu&rev=b9b482c6c090