Error report: https://pantheon.corp.google.com/errors/11545873439671469725?time=P30D&filter&project=findit-for-me

A sample failure log:


10:00:38.034
Request to https://chromium.googlesource.com/chromium/src.git/+/53ace2aca596f78f35de863a6c69447b36693da3?format=json resulted in 429, headers:[["x-xss-protection", "1; mode=block"], ["x-content-type-options", "nosniff"], ["transfer-encoding", "chunked"], ["set-cookie", "gi=mogbm58jhJR1KWqM12jqGWW8MVLfcRjmDBRZda9qpYo=findit-for-me%40appspot.gserviceaccount.com;Path=/;Secure"], ["strict-transport-security", "max-age=31536000; includeSubDomains; preload"], ["x-errorid", "429, EFERW-296,EFERW-289,GQF-110,GQF-72,GQF-59,GSF-26,MF-180,GGF-152,OGCWF-35,HMF-189,AF-196,GGFBSLRF-91,GGFBUELRF-177,SCZFI-157,CWHF-113,CRF-94,CAF-129,SSF-25,GUUAF-144,MHF-109,EF-228,GAEF-72,GBLHCF-114,STSF-151,SF-63,EBF-68,TTLF-154,PLRHF-268,IIIHF-46,DF-173,DF-63,EUCDLF-111,GSI-75,RR-111"], ["x-quota-info", "gitiles-view:findit-for-me@appspot.gserviceaccount.com=1L"], ["date", "Fri, 15 Sep 2017 17:00:38 GMT"], ["x-frame-options", "SAMEORIGIN"], ["alt-svc", "quic=\":443\"; ma=2592000; v=\"39,38,37,35\""], ["content-type", "text/plain; charset=utf-8"]] (/base/data/home/apps/s~findit-for-me/waterfall-backend:11683-609f390.404064370448275547/gae_libs/http/http_client_appengine.py:51)
10:01:02.043
Generator waterfall.identify_culprit_pipeline.IdentifyCulpritPipeline(*({u'build_number': 62280, u'builder_name': u'Linux Tests', u'builds': {u'62279': {u'blame_list': [u'03b4f449c376424324c61b4421f579fdb3c73399', u'e53f544bd56fe0a7c66b3fe705e104280a431127', u'525f78bdde... (1725 bytes), **{})#c2382c4232794587a9ed3d0b1f60188b raised exception. Exception: Failed to get change log for 53ace2aca596f78f35de863a6c69447b36693da3 (/base/data/home/apps/s~findit-for-me/waterfall-backend:11683-609f390.404064370448275547/first_party/pipeline_utils/appengine_third_party_pipeline_python_src_pipeline/pipeline.py:2434)
Traceback (most recent call last):
  File "/base/data/home/apps/s~findit-for-me/waterfall-backend:11683-609f390.404064370448275547/first_party/pipeline_utils/appengine_third_party_pipeline_python_src_pipeline/pipeline.py", line 2158, in evaluate
    self, pipeline_key, root_pipeline_key, caller_output)
  File "/base/data/home/apps/s~findit-for-me/waterfall-backend:11683-609f390.404064370448275547/first_party/pipeline_utils/appengine_third_party_pipeline_python_src_pipeline/pipeline.py", line 1113, in _run_internal
    return self.run(*self.args, **self.kwargs)
  File "/base/data/home/apps/s~findit-for-me/waterfall-backend:11683-609f390.404064370448275547/waterfall/identify_culprit_pipeline.py", line 30, in run
    change_logs = build_failure_analysis.PullChangeLogs(failure_info)
  File "/base/data/home/apps/s~findit-for-me/waterfall-backend:11683-609f390.404064370448275547/services/build_failure_analysis.py", line 793, in PullChangeLogs
    raise Exception('Failed to get change log for %s' % revision)
Exception: Failed to get change log for 53ace2aca596f78f35de863a6c69447b36693da3