the chromiumos sdk builder is failing as shown here.

https://uberchromegw.corp.google.com/i/chromiumos/builders/chromiumos-sdk/builds/6804/steps/Report/logs/stdio

Exception thrown, but all stages marked successful. This is an internal error,
because the stage that threw the exception should be marked as failing.
cbuildbot: Unhandled exception:
Traceback (most recent call last):
  File "chromite/bin/cbuildbot", line 164, in <module>
    commandline.ScriptWrapperMain(FindTarget)
  File "/b/cbuild/external_master/chromite/lib/commandline.py", line 834, in ScriptWrapperMain
    ret = target(argv[1:])
  File "/b/cbuild/external_master/chromite/scripts/cbuildbot.py", line 1273, in main
    _RunBuildStagesWrapper(options, site_config, build_config)
  File "/b/cbuild/external_master/chromite/scripts/cbuildbot.py", line 1273, in main
    _RunBuildStagesWrapper(options, site_config, build_config)
  File "/b/cbuild/external_master/chromite/scripts/cbuildbot.py", line 241, in _RunBuildStagesWrapper
    if not builder.Run():
  File "/b/cbuild/external_master/chromite/cbuildbot/builders/generic_builders.py", line 313, in Run
    self.RunStages()
  File "/b/cbuild/external_master/chromite/cbuildbot/builders/sdk_builders.py", line 31, in RunStages
    self._RunStage(chrome_stages.UprevAndroidStage)
AttributeError: 'module' object has no attribute 'UprevAndroidStage'


looking at the logs, it seems David may have made this change.