Example log here: https://uberchromegw.corp.google.com/i/chromeos/builders/lakitu_next-incremental/builds/9370/steps/VMTest%20%28attempt%202%29/logs/stdio

Snippet:

13:12:21: WARNING: HttpsMonitor.send received status 429: {
  "error": {
    "code": 429,
    "message": "Resource has been exhausted (e.g. check quota).",
    "status": "RESOURCE_EXHAUSTED"
  }
}