This is in atlas-release builder:

https://cros-goldeneye.corp.google.com/chromeos/healthmonitoring/buildDetails?buildbucketId=8924089046714808864

It contains a failed swarming.py

06:03:10: INFO: RunCommand: /b/swarming/w/ir/cache/cbuild/repository/chromite/third_party/swarming.client/swarming.py run --swarming chromeos-proxy.appspot.com --task-summary-json /b/swarming/w/ir/tmp/t/cbuildbot-tmp18BDGj/tmpsnAneL/temp_summary.json --print-status-updates --timeout 14400 --raw-cmd --task-name atlas-release/R73-11599.0.0-sanity --dimension os Ubuntu-14.04 --dimension pool default --io-timeout 14400 --hard-timeout 14400 --expiration 1200 '--tags=priority:Build' '--tags=suite:sanity' '--tags=build:atlas-release/R73-11599.0.0' '--tags=task_name:atlas-release/R73-11599.0.0-sanity' '--tags=board:atlas' -- /usr/local/autotest/site_utils/run_suite.py --build atlas-release/R73-11599.0.0 --board atlas --suite_name sanity --pool bvt --file_bugs True --priority Build --timeout_mins 180 --retry True --max_retries 5 --minimum_duts 1 --suite_min_duts 1 --offload_failures_only False --job_keyvals "{'cidb_build_stage_id': 107620254L, 'cidb_build_id': 3368814, 'datastore_parent_key': ('Build', 3368814, 'BuildStage', 107620254L)}" -c
06:13:19: WARNING: Exception is not retriable return code: 1; command: /b/swarming/w/ir/cache/cbuild/repository/chromite/third_party/swarming.client/swarming.py run --swarming chromeos-proxy.appspot.com --task-summary-json /b/swarming/w/ir/tmp/t/cbuildbot-tmp18BDGj/tmpsnAneL/temp_summary.json --print-status-updates --timeout 14400 --raw-cmd --task-name atlas-release/R73-11599.0.0-sanity --dimension os Ubuntu-14.04 --dimension pool default --io-timeout 14400 --hard-timeout 14400 --expiration 1200 '--tags=priority:Build' '--tags=suite:sanity' '--tags=build:atlas-release/R73-11599.0.0' '--tags=task_name:atlas-release/R73-11599.0.0-sanity' '--tags=board:atlas' -- /usr/local/autotest/site_utils/run_suite.py --build atlas-release/R73-11599.0.0 --board atlas --suite_name sanity --pool bvt --file_bugs True --priority Build --timeout_mins 180 --retry True --max_retries 5 --minimum_duts 1 --suite_min_duts 1 --offload_failures_only False --job_keyvals "{'cidb_build_stage_id': 107620254L, 'cidb_build_id': 3368814, 'datastore_parent_key': ('Build', 3368814, 'BuildStage', 107620254L)}" -c

and later:

Autotest instance created: cautotest-prod
01-17-2019 [06:03:16] Submitted create_suite_job rpc
Traceback (most recent call last):
  File "/usr/local/autotest/site_utils/run_suite.py", line 2076, in <module>
    sys.exit(main())
  File "/usr/local/autotest/site_utils/run_suite.py", line 2065, in main
    result = _run_task(options)
  File "/usr/local/autotest/site_utils/run_suite.py", line 2000, in _run_task
    return _run_suite(options)
  File "/usr/local/autotest/site_utils/run_suite.py", line 1739, in _run_suite
    job_id = create_suite(afe, options)
  File "/usr/local/autotest/client/common_lib/cros/retry.py", line 252, in func_retry
    raise error.TimeoutException(exception_message)
autotest_lib.client.common_lib.error.TimeoutException: retry exception (function="create_suite()"), timeout = 600s

I found no other clue in this or other logs.  Is it the case that some system component could be logging some more information?