Starting on June 23 (last Friday), the samus-pre-flight-branch R59 builder has been consistently failing in the SyncChrome stage.

https://uberchromegw.corp.google.com/i/chromeos_release/builders/samus-pre-flight-branch%20release-R59-9460.B

The error message is:

20:02:10: INFO: Running cidb query on pid 30163, repr(query) starts with <sqlalchemy.sql.expression.Update object at 0x7f3a349ae5d0>
Preconditions for the stage successfully met. Beginning to execute stage...
20:02:10: INFO: Running cidb query on pid 30163, repr(query) starts with <sqlalchemy.sql.expression.Update object at 0x7f3a349a5f10>
20:02:10: INFO: RunCommand: cros_sdk -- ../../chromite/bin/cros_mark_chrome_as_stable '--tracking_branch=release-R59-9460.B' '--boards=samus' stable_release in /b/c/cbuild/repository/src/scripts
 * Generating locale-archive: forcing # of jobs to 1
20:02:12: WARNING: A transient error occured while querying chromium.googlesource.com:

GET /a//chromium/src.git/+refs/tags?format=JSON HTTP/1.1
HTTP/1.1 301 Moved Permanently
Response body: '<a href="/a/chromium/src.git/+refs/tags?format=JSON">Moved Permanently</a>.\n\n'
20:02:12: WARNING: conn.sock.getpeername(): ('173.194.209.82', 443)
cros_mark_chrome_as_stable: Unhandled exception:
Traceback (most recent call last):
  File "../../chromite/bin/cros_mark_chrome_as_stable", line 168, in <module>
    DoMain()
  File "../../chromite/bin/cros_mark_chrome_as_stable", line 164, in DoMain
    commandline.ScriptWrapperMain(FindTarget)
  File "/mnt/host/source/chromite/lib/commandline.py", line 837, in ScriptWrapperMain
    ret = target(argv[1:])
  File "/mnt/host/source/chromite/scripts/cros_mark_chrome_as_stable.py", line 492, in main
    version_to_uprev = GetLatestRelease(options.chrome_url, sticky_branch)
  File "/mnt/host/source/chromite/scripts/cros_mark_chrome_as_stable.py", line 160, in GetLatestRelease
    j = gob_util.FetchUrlJson(parsed_url[1], path, ignore_404=False)
  File "/mnt/host/source/chromite/lib/gob_util.py", line 266, in FetchUrlJson
    fh = FetchUrl(*args, **kwargs)
  File "/mnt/host/source/chromite/lib/gob_util.py", line 258, in FetchUrl
    _FetchUrlHelper, sleep=SLEEP)
  File "/mnt/host/source/chromite/lib/retry_util.py", line 171, in RetryException
    return GenericRetry(exc_retry, max_retry, functor, *args, **kwargs)
  File "/mnt/host/source/chromite/lib/retry_util.py", line 122, in GenericRetry
    ret = functor(*args, **kwargs)
  File "/mnt/host/source/chromite/lib/timeout_util.py", line 171, in TimeoutWrapper
    return func(*args, **kwargs)
  File "/mnt/host/source/chromite/lib/gob_util.py", line 253, in _FetchUrlHelper
    raise GOBError(http_status=response.status, reason=response.reason)
chromite.lib.gob_util.GOBError

@@@STEP_FAILURE@@@
20:02:12: ERROR: <class 'chromite.lib.cros_build_lib.RunCommandError'>: return code: 1; command: cros_sdk -- ../../chromite/bin/cros_mark_chrome_as_stable '--tracking_branch=release-R59-9460.B' '--boards=samus' stable_release
cmd=['cros_sdk', '--', '../../chromite/bin/cros_mark_chrome_as_stable', '--tracking_branch=release-R59-9460.B', u'--boards=samus', u'stable_release'], cwd=/b/c/cbuild/repository/src/scripts
Traceback (most recent call last):
  File "/b/c/cbuild/repository/chromite/lib/failures_lib.py", line 190, in wrapped_functor
    return functor(*args, **kwargs)
  File "/b/c/cbuild/repository/chromite/cbuildbot/stages/chrome_stages.py", line 78, in PerformStage
    chrome_version=self.chrome_version)
  File "/b/c/cbuild/repository/chromite/cbuildbot/commands.py", line 1541, in MarkChromeAsStable
    extra_env=extra_env).output.rstrip()
  File "/b/c/cbuild/repository/chromite/lib/cros_build_lib.py", line 625, in RunCommand
    raise RunCommandError(msg, cmd_result)
RunCommandError: return code: 1; command: cros_sdk -- ../../chromite/bin/cros_mark_chrome_as_stable '--tracking_branch=release-R59-9460.B' '--boards=samus' stable_release
cmd=['cros_sdk', '--', '../../chromite/bin/cros_mark_chrome_as_stable', '--tracking_branch=release-R59-9460.B', u'--boards=samus', u'stable_release'], cwd=/b/c/cbuild/repository/src/scripts

20:02:12: INFO: Running cidb query on pid 30163, repr(query) starts with <sqlalchemy.sql.expression.Update object at 0x7f3a34460fd0>
20:02:12: INFO: Running cidb query on pid 30163, repr(query) starts with <sqlalchemy.sql.expression.Insert object at 0x7f3a34934690>
20:02:13: INFO: Running cidb query on pid 30163, repr(query) starts with <sqlalchemy.sql.expression.Insert object at 0x7f3a34934ed0>
20:02:13: INFO: Writing metadata to /b/c/cbuild/repository/buildbot_archive/samus-pre-flight-branch/R59-9460.67.0-rc14/partial-metadata.json.
20:02:13: INFO: Uploading metadata file /b/c/cbuild/repository/buildbot_archive/samus-pre-flight-branch/R59-9460.67.0-rc14/partial-metadata.json now.
20:02:13: INFO: RunCommand: /b/c/cbuild/repository/.cache/common/gsutil_4.19.tar.gz/gsutil/gsutil -o 'Boto:num_retries=10' -m cp -v -- /b/c/cbuild/repository/buildbot_archive/samus-pre-flight-branch/R59-9460.67.0-rc14/partial-metadata.json gs://chromeos-image-archive/samus-pre-flight-branch/R59-9460.67.0-rc14/partial-metadata.json
20:02:14: INFO: RunCommand: /b/c/cbuild/repository/.cache/common/gsutil_4.19.tar.gz/gsutil/gsutil -o 'Boto:num_retries=10' -m cp -v -- /b/c/cbuild/repository/buildbot_archive/samus-pre-flight-branch/R59-9460.67.0-rc14/UPLOADED gs://chromeos-image-archive/samus-pre-flight-branch/R59-9460.67.0-rc14/UPLOADED
20:02:15: INFO: Writing updated metadata to database for build_id 1625388.
20:02:15: INFO: Running cidb query on pid 30163, repr(query) starts with <sqlalchemy.sql.expression.Update object at 0x7f3a34934cd0>