There have been many failed CQ runs for my CL: https://codereview.chromium.org/2131413003/.

Runs: https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.org/2131413003/1

Most recent failure:
https://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_asan_rel_ng/builds/191554/steps/steps/logs/stdio

"""

@@@STEP_CLOSED@@@
INFO:monitoring_utils:Executing command: ['/opt/infra-python/run.py', 'infra.tools.send_monitoring_event', '--event-mon-output-file', '/b/build/slave/linux_asan/.recipe_runtime/tmp5BI9Gm/build_data/log_request_proto', '--event-mon-run-type', 'file', '--event-mon-service-name', u'buildbot/master/master.tryserver.chromium.linux', '--build-event-build-name', u'linux_chromium_asan_rel_ng', '--build-event-build-number', '191554', '--build-event-build-scheduling-time', '1468346971000', '--build-event-type', 'BUILD', '--event-mon-timestamp-kind', 'POINT', '--build-event-hostname', 'slave278-c4']
Ensuring CIPD client is up-to-date
GET https://chrome-infra-packages.appspot.com/_ah/api/repo/v1/instance/resolve?version=1ea0b6b254ad3f546c826dd3e437798ace2c2480&package_name=infra%2Ftools%2Fcipd%2Flinux-amd64
CIPD client 1ea0b6b254ad3f546c826dd3e437798ace2c2480 => 1ea0b6b254ad3f546c826dd3e437798ace2c2480
INFO:cipd:Using CIPD client at [/b/build/slave/linux_asan/.recipe_cipd/cipd].
INFO:cipd:CIPD ensuring 2 package(s)...
INFO:logdog_bootstrap:Running on GCE. No credentials necessary.
INFO:annotated_run:Bootstrapping through LogDog: ['/b/build/slave/linux_asan/.recipe_cipd/logdog_butler', '-log-level', 'warning', '-project', 'chromium', '-prefix', 'bb/tryserver.chromium.linux/linux_chromium_asan_rel_ng/191554', '-output', 'logdog,host="services-dot-luci-logdog.appspot.com"', '-output-max-buffer-age', '30s', 'run', '-stdout', 'tee=stdout', '-stderr', 'tee=stderr', '-streamserver-uri', 'unix:/b/build/.recipe_runtime/tmpSc5ANN/butler.sock', '--', '/b/build/slave/linux_asan/.recipe_cipd/logdog_annotee', '-log-level', 'warning', '-project', 'chromium', '-butler-stream-server', 'unix:/b/build/.recipe_runtime/tmpSc5ANN/butler.sock', '-logdog-host', 'luci-logdog.appspot.com', '-annotate', 'tee', '-name-base', 'recipes', '-print-summary', '-tee', '-json-args-path', '/b/build/slave/linux_asan/.recipe_runtime/tmp5BI9Gm/logdog_annotee_cmd.json', '-result-path', '/b/build/slave/linux_asan/.recipe_runtime/tmp5BI9Gm/bootstrap_result.json']
INFO:root:Running ['git', 'rev-parse', '--verify', 'ba76686b6729174d9b7c7900ada4946ea5329632^{commit}']
INFO:root:Running ['git', 'checkout', '--quiet', 'ba76686b6729174d9b7c7900ada4946ea5329632']
@@@STEP_LINK@stderr-->stdio@https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Ftryserver.chromium.linux%2Flinux_chromium_asan_rel_ng%2F191554%2F%2B%2Frecipes%2Fstderr@@@
fatal: Unable to create '/b/build/scripts/slave/.recipe_deps/recipe_engine/.git/index.lock': File exists.
"""