@thobrla Any idea why these requests would start to become flaky? Some recent examples: - https://travis-ci.org/GoogleCloudPlatform/google-cloud-python/builds/158783443 - https://travis-ci.org/GoogleCloudPlatform/google-cloud-python/builds/158777834 - https://travis-ci.org/GoogleCloudPlatform/google-cloud-python/builds/158764459 - https://travis-ci.org/GoogleCloudPlatform/google-cloud-python/builds/158717892 - https://travis-ci.org/GoogleCloudPlatform/google-cloud-python/builds/158645485