the pre-cq launcher has been failing since #6629 (4:30AM this morning).

https://uberchromegw.corp.google.com/i/chromeos/builders/pre-cq-launcher/builds/6632/steps/PreCQLauncher/logs/stdio

15:57:19: INFO: RunCommand: git fetch -f https://chromium-review.googlesource.com/chromiumos/overlays/chromiumos-overlay refs/changes/80/334880/2 in /b/cbuild/internal_master/src/third_party/chromiumos-overlay
15:57:22: INFO: Running cidb query on pid 26516, repr(query) starts with <sqlalchemy.sql.expression.Insert object at 0x7fb5e80f1590>
15:57:25: WARNING: A transient error occured while querying chromium-review.googlesource.com:
POST /a/changes/329371/revisions/37b693e9a2f14402cbb7dac07c824a1ddbee1f27/review HTTP/1.1
HTTP/1.1 500 Internal Server Error
Response body: 'Internal server error\n'
15:57:26: WARNING: A transient error occured while querying chromium-review.googlesource.com:
POST /a/changes/329371/revisions/37b693e9a2f14402cbb7dac07c824a1ddbee1f27/review HTTP/1.1
HTTP/1.1 500 Internal Server Error
Response body: 'Internal server error\n'
15:57:27: WARNING: A transient error occured while querying chromium-review.googlesource.com:
POST /a/changes/329371/revisions/37b693e9a2f14402cbb7dac07c824a1ddbee1f27/review HTTP/1.1
HTTP/1.1 500 Internal Server Error
Response body: 'Internal server error\n'
15:57:29: WARNING: A transient error occured while querying chromium-review.googlesource.com:
POST /a/changes/329371/revisions/37b693e9a2f14402cbb7dac07c824a1ddbee1f27/review HTTP/1.1
HTTP/1.1 500 Internal Server Error
Response body: 'Internal server error\n'
15:57:31: WARNING: A transient error occured while querying chromium-review.googlesource.com:
POST /a/changes/329371/revisions/37b693e9a2f14402cbb7dac07c824a1ddbee1f27/review HTTP/1.1
HTTP/1.1 500 Internal Server Error
Response body: 'Internal server error\n'
15:57:33: WARNING: A transient error occured while querying chromium-review.googlesource.com:
POST /a/changes/329371/revisions/37b693e9a2f14402cbb7dac07c824a1ddbee1f27/review HTTP/1.1
HTTP/1.1 500 Internal Server Error
Response body: 'Internal server error\n'
15:57:36: WARNING: A transient error occured while querying chromium-review.googlesource.com:
POST /a/changes/329371/revisions/37b693e9a2f14402cbb7dac07c824a1ddbee1f27/review HTTP/1.1
HTTP/1.1 500 Internal Server Error
Response body: 'Internal server error\n'
15:57:40: WARNING: A transient error occured while querying chromium-review.googlesource.com:
POST /a/changes/329371/revisions/37b693e9a2f14402cbb7dac07c824a1ddbee1f27/review HTTP/1.1
HTTP/1.1 500 Internal Server Error
Response body: 'Internal server error\n'
15:57:44: WARNING: A transient error occured while querying chromium-review.googlesource.com:
POST /a/changes/329371/revisions/37b693e9a2f14402cbb7dac07c824a1ddbee1f27/review HTTP/1.1
HTTP/1.1 500 Internal Server Error
Response body: 'Internal server error\n'
15:57:49: WARNING: A transient error occured while querying chromium-review.googlesource.com:
POST /a/changes/329371/revisions/37b693e9a2f14402cbb7dac07c824a1ddbee1f27/review HTTP/1.1
HTTP/1.1 500 Internal Server Error
Response body: 'Internal server error\n'
15:57:54: WARNING: A transient error occured while querying chromium-review.googlesource.com:
POST /a/changes/329371/revisions/37b693e9a2f14402cbb7dac07c824a1ddbee1f27/review HTTP/1.1
HTTP/1.1 500 Internal Server Error
Response body: 'Internal server error\n'

@@@STEP_FAILURE@@@
15:57:54: ERROR: <class 'chromite.lib.gob_util.InternalGOBError'>: Internal Server Error
Traceback (most recent call last):
  File "/b/cbuild/internal_master/chromite/cbuildbot/failures_lib.py", line 160, in wrapped_functor
    return functor(*args, **kwargs)
  File "/b/cbuild/internal_master/chromite/cbuildbot/stages/sync_stages.py", line 1686, in PerformStage
    builder_run=self._run)
  File "/b/cbuild/internal_master/chromite/cbuildbot/validation_pool.py", line 1410, in AcquirePool
    if pool.AcquireChanges(gerrit_query, ready_fn, change_filter):
  File "/b/cbuild/internal_master/chromite/cbuildbot/validation_pool.py", line 1310, in AcquireChanges
    self, self.candidates, self.non_manifest_changes)
  File "/b/cbuild/internal_master/chromite/cbuildbot/stages/sync_stages.py", line 1601, in ProcessChanges
    self._ProcessTimeouts(change, progress_map, pool, current_db_time)
  File "/b/cbuild/internal_master/chromite/cbuildbot/stages/sync_stages.py", line 1457, in _ProcessTimeouts
    pool.RemoveReady(change, reason=config)
  File "/b/cbuild/internal_master/chromite/cbuildbot/validation_pool.py", line 2281, in RemoveReady
    self._helper_pool.ForChange(change).RemoveReady(change, dryrun=self.dryrun)
  File "/b/cbuild/internal_master/chromite/lib/gerrit.py", line 376, in RemoveReady
    label='Trybot-Ready', notify='OWNER')
  File "/b/cbuild/internal_master/chromite/lib/gob_util.py", line 513, in ResetReviewLabels
    response = FetchUrlJson(host, path, reqtype='POST', body=body)
  File "/b/cbuild/internal_master/chromite/lib/gob_util.py", line 232, in FetchUrlJson
    fh = FetchUrl(*args, **kwargs)
  File "/b/cbuild/internal_master/chromite/lib/gob_util.py", line 224, in FetchUrl
    _FetchUrlHelper, sleep=SLEEP)
  File "/b/cbuild/internal_master/chromite/lib/retry_util.py", line 127, in RetryException
    return GenericRetry(exc_retry, max_retry, functor, *args, **kwargs)
  File "/b/cbuild/internal_master/chromite/lib/retry_util.py", line 88, in GenericRetry
    ret = functor(*args, **kwargs)
  File "/b/cbuild/internal_master/chromite/lib/gob_util.py", line 194, in _FetchUrlHelper
    raise InternalGOBError(response.status, response.reason)
InternalGOBError: Internal Server Error