Non-deterministic unit test (test_run_in_transaction_w_timeout) #3080
Description
The failure is:
self.assertGreater(len(called_with), 1) Observed failures:
- https://circleci.com/gh/GoogleCloudPlatform/google-cloud-python/1064
- https://ci.appveyor.com/project/GoogleCloudPlatform/google-cloud-python/build/1.0.1143.master/job/x22vv8q3ftl2to1o
- https://ci.appveyor.com/project/GoogleCloudPlatform/google-cloud-python/build/1.0.1144.master/job/awpf0vg10pknev8i
- https://ci.appveyor.com/project/GoogleCloudPlatform/google-cloud-python/build/1.0.1158.master/job/fppo8w73x7yfup4u
- https://ci.appveyor.com/project/GoogleCloudPlatform/google-cloud-python/build/1.0.1160.master/job/jr47sjis2tyeuu0n
- https://ci.appveyor.com/project/GoogleCloudPlatform/google-cloud-python/build/1.0.1164.master/job/l4y5g8d787xfhrjs
- https://ci.appveyor.com/project/GoogleCloudPlatform/google-cloud-python/build/1.0.1167.master/job/icf5aof37jq8ghnr