dlp.risk_test: test_k_map_estimate_analysis_multiple_field failed

[flaky-bot]

Note: #3673 was also for this test, but it was closed more than 10 days ago. So, I didn't mark it flaky.

---

commit: e7e6f93
buildURL: Build Status, Sponge
status: failed

Test output

Traceback (most recent call last):
  File "/workspace/dlp/risk_test.py", line 360, in test_k_map_estimate_analysis_multiple_field
    timeout=TIMEOUT,
  File "/workspace/dlp/risk.py", line 661, in k_map_estimate_analysis
    subscription.result(timeout=timeout)
  File "/workspace/dlp/.nox/py-3-6/lib/python3.6/site-packages/google/cloud/pubsub_v1/futures.py", line 102, in result
    err = self.exception(timeout=timeout)
  File "/workspace/dlp/.nox/py-3-6/lib/python3.6/site-packages/google/cloud/pubsub_v1/futures.py", line 122, in exception
    raise exceptions.TimeoutError("Timed out waiting for result.")
concurrent.futures._base.TimeoutError: Timed out waiting for result.

[flaky-bot]

commit: 572d951
buildURL: Build Status, Sponge
status: failed

Test output

Traceback (most recent call last):
  File "/workspace/dlp/risk_test.py", line 360, in test_k_map_estimate_analysis_multiple_field
    timeout=TIMEOUT,
  File "/workspace/dlp/risk.py", line 661, in k_map_estimate_analysis
    subscription.result(timeout=timeout)
  File "/workspace/dlp/.nox/py-3-6/lib/python3.6/site-packages/google/cloud/pubsub_v1/futures.py", line 102, in result
    err = self.exception(timeout=timeout)
  File "/workspace/dlp/.nox/py-3-6/lib/python3.6/site-packages/google/cloud/pubsub_v1/futures.py", line 122, in exception
    raise exceptions.TimeoutError("Timed out waiting for result.")
concurrent.futures._base.TimeoutError: Timed out waiting for result.