Unfortunately it the gcloud app deploy error message is really vague and useless for this case, but CL-Exonerator fails to deploy when I increase the CPU / RAM requirements to 4 CPUs and 4GB ram:

23f5d997f07c: Pushed
b4ad1045355e: Pushed
337aa6a3ff72: Pushed
4ec96a1e07f7: Pushed
latest: digest: sha256:3a9bafe9f47fbb17b97934897bdf14874c3aebb875fea9940a3d1e1d59c7c6c3 size: 2836
DONE
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Updating service [default] (this may take several minutes)...failed.

ERROR: (gcloud.app.deploy) Error Response: [4] Timed out waiting for the app infrastructure to become healthy.
Traceback (most recent call last):
  File "./deploy_app.py", line 143, in <module>
    fire.Fire(Main)
  File "/Users/phobbs/.local/share/virtualenvs/cl_exonerator-GoHstgjQ/lib/python2.7/site-packages/fire/core.py", line 127, in Fire
    component_trace = _Fire(component, args, context, name)                                                                                        File "/Users/phobbs/.local/share/virtualenvs/cl_exonerator-GoHstgjQ/lib/python2.7/site-packages/fire/core.py", line 366, in _Fire
    component, remaining_args)
  File "/Users/phobbs/.local/share/virtualenvs/cl_exonerator-GoHstgjQ/lib/python2.7/site-packages/fire/core.py", line 542, in _CallCallable
    result = fn(*varargs, **kwargs)
  File "./deploy_app.py", line 139, in Main
    cros_build_lib.RunCommand(['gcloud', 'app', 'deploy', app], cwd=tempdir)
  File "/Volumes/cros/infra/cl_exonerator/chromite/lib/cros_build_lib.py", line 658, in RunCommand
    raise RunCommandError(msg, cmd_result)
chromite.lib.cros_build_lib.RunCommandError: return code: 1; command: gcloud app deploy app.yaml


We need more quota to support the higher CPU count.