Happens on M52 branch builders

02:08:04: INFO: Refreshing access_token
02:13:43: ERROR: wait_cmd has lab failures: cwd=None.
Exception will be raised in the next json_dump run.
Autotest instance: cautotest
06-16-2016 [01:53:08] Created suite job: http://cautotest.corp.google.com/afe/#tab_id=view_job&object_id=66937868
@@@STEP_LINK@Link to suite@http://cautotest.corp.google.com/afe/#tab_id=view_job&object_id=66937868@@@
Suite job                           [ FAILED ]
Suite job                             ABORT: 
autoupdate_EndToEndTest.npo_delta   [ FAILED ]
autoupdate_EndToEndTest.npo_delta     ABORT: None

Suite timings:
Downloads started at 2016-06-16 01:49:04
Payload downloads ended at 2016-06-16 01:49:06
Suite started at 2016-06-16 01:54:17
Artifact downloads ended (at latest) at 2016-06-16 01:54:56
Testing started at 2016-06-16 02:11:07
Testing ended at 9999-12-31 23:59:59.999999


Reason: Suite job failed or provisioning failed.

Output below this line is for buildbot consumption:
@@@STEP_LINK@[Test-Logs]: Suite job: ABORT@http://cautotest/tko/retrieve_logs.cgi?job=/results/66937868-chromeos-test/@@@
@@@STEP_LINK@[Flake-Dashboard]: Suite job@https://wmatrix.googleplex.com/retry_teststats/?days_back=30&tests=Suite job@@@
Will return from run_suite with status: INFRA_FAILURE
02:13:43: INFO: RunCommand: /b/cbuild/shared_internal/chromite/third_party/swarming.client/swarming.py run --swarming chromeos-proxy.appspot.com --task-summary-json /tmp/cbuildbot-tmpERhTB2/cbuildbot-tmpEtIGv1/tmpSUbuAT/temp_summary.json --raw-cmd --task-name clapper-release/R52-8350.32.0-au --dimension os Ubuntu-14.04 --dimension pool default --print-status-updates --timeout 39600 --io-timeout 39600 --hard-timeout 39600 --expiration 1200 -- /usr/local/autotest/site_utils/run_suite.py --build clapper-release/R52-8350.32.0 --board clapper --suite_name au --pool bvt --num 2 --file_bugs True --priority DEFAULT --timeout_mins 600 --retry True --max_retries 10 --suite_min_duts 6 --offload_failures_only False --json_dump -m 66937868
#JSON_START#{"autotest_instance": "cautotest", "return_code": 3, "return_message": "Suite job failed or provisioning failed.", "suite_job_id": 66937868, "suite_timings": {"artifact_download_end": "2016-06-16 01:54:56", "download_start": "2016-06-16 01:49:04", "payload_download_end": "2016-06-16 01:49:06", "suite_start": "2016-06-16 01:54:17", "tests_end": "9999-12-31 23:59:59.999999", "tests_start": "2016-06-16 02:11:07"}, "tests": {"Suite job": {"attributes": [], "link_to_logs": "http://cautotest/tko/retrieve_logs.cgi?job=/results/66937868-chromeos-test/", "reason": "", "retry_count": 0, "status": "ABORT", "wmatrix_link": "https://wmatrix.googleplex.com/retry_teststats/?days_back=30&tests=Suite job"}, "autoupdate_EndToEndTest.npo_delta": {"attributes": [], "link_to_logs": "http://cautotest/tko/retrieve_logs.cgi?job=/results/66939200-chromeos-test/", "reason": "None", "retry_count": 0, "status": "ABORT"}}}#JSON_END#
02:14:46: INFO: Running cidb query on pid 33910, repr(query) starts with <sqlalchemy.sql.expression.Insert object at 0x94cd390>
02:14:51: INFO: cidb query succeeded after 1 retries

@@@STEP_FAILURE@@@
02:14:51: ERROR: ** HWTest did not complete due to infrastructure issues (code 3) **

Links to test logs:
Suite job                           http://cautotest/tko/retrieve_logs.cgi?job=/results/66937868-chromeos-test/
autoupdate_EndToEndTest.npo_delta   http://cautotest/tko/retrieve_logs.cgi?job=/results/66939200-chromeos-test/

Link to build logs:
https://uberchromegw.corp.google.com/i/chromeos_release/builders/clapper-release%20release-R52-8350.B/builds/27

Link to test logs:
https://pantheon.corp.google.com/storage/browser/chromeos-autotest-results/66937868-chromeos-test/hostless/debug/