I went looking because it kept breaking my CLs, but I don't know how common my experience is.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/chromite/+/1e744e501b6ced3b60e8ea9c6ebbfe263b80aec1

commit 1e744e501b6ced3b60e8ea9c6ebbfe263b80aec1
Author: Don Garrett <dgarrett@google.com>
Date: Wed Mar 14 11:07:12 2018

chromite-pre-cq: Disable CidbIntegrationTest.

These tests are causing PreCQ flake. Disable them for now.

BUG=chromium:820305
TEST=run_tests

Change-Id: I17582cd5f0c37afdd35a3eaef839b6d3784e5dea
Reviewed-on: https://chromium-review.googlesource.com/956268
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Don Garrett <dgarrett@chromium.org>
Reviewed-by: Aviv Keshet <akeshet@chromium.org>

[modify] https://crrev.com/1e744e501b6ced3b60e8ea9c6ebbfe263b80aec1/cbuildbot/builders/test_builders.py

The test is disabled, but keeping the bug around to address making it more stable so we can re-enable.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b8e7c2d9a192a0e7c441c6f34284fea6ef68dcd5

commit b8e7c2d9a192a0e7c441c6f34284fea6ef68dcd5
Author: chromite-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com <chromite-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Date: Fri Mar 16 22:50:01 2018

Roll src/third_party/chromite/ 3b75c9d82..3ad8f333d (31 commits)

https://chromium.googlesource.com/chromiumos/chromite.git/+log/3b75c9d82ebf..3ad8f333d567

$ git log 3b75c9d82..3ad8f333d --date=short --no-merges --format='%ad %ae %s'
2018-03-16 dgarrett Revert "Reland "pre_cq_launcher: Swarming for chromeos-infra-puppet-pre-cq.""
2018-03-16 dgarrett Reland "pre_cq_launcher: Swarming for chromeos-infra-puppet-pre-cq."
2018-03-14 ayatane autotest-pre-cq: Remove builder and stage [2/2]
2018-03-16 dgarrett Revert "pre_cq_launcher: Swarming for chromeos-infra-puppet-pre-cq."
2018-03-15 dgarrett chromeos_config: Move fuzzer builds into new bucket.
2018-03-16 dgarrett Revert "commands: RunBranchUtilTest -> RunLocalTryjob"
2018-03-13 dgarrett pre_cq_launcher: Swarming for chromeos-infra-puppet-pre-cq.
2018-02-07 dgarrett commands: RunBranchUtilTest -> RunLocalTryjob
2018-03-14 dgarrett cbuildbot_run: Switch more build links to Legoland.
2018-03-13 dgarrett swarming_lib: Remove SWARMING_TASK_ID from cmds.
2018-03-08 dgarrett moblab_vm_unitest: Fix lint issues.
2018-03-14 ihf chromeos_config: add more arcnext experimental coverage.
2018-03-14 ayatane autotest-pre-cq: Remove this [1/2]
2018-03-14 norvez chromeos_config: remove dead code
2018-03-09 dgarrett summarize_build_stats: Add blank line at beginning.
2018-01-09 dgarrett cros tryjob: Remove buildbot URL generation.
2017-09-14 craigb image_test: Remove check that kernel is not ELF.
2018-03-15 ihf Revert "chromeos_config: temporarily mark eve-arcnext-paladin experimental"
2018-03-15 ihf Revert "chromeos_config: temporarily experimental eve-arcnext-mst-android-pfq"
2018-03-13 lhchavez chromeos_config: Add betty-arcnext builder config
2018-03-13 achuith cbuildbot: Add missing files to index.
2018-03-13 akeshet completion_stages: add a has_important_slave metric to master completion
2018-03-13 dgarrett precq-launcher: Start using Legoland build details page.
2018-03-08 dgarrett chromite-pre-cq: Disable CidbIntegrationTest.
2018-03-14 akeshet chromeos_config: temporarily experimental eve-arcnext-mst-android-pfq
2018-03-13 akeshet chromeos_config: temporarily mark eve-arcnext-paladin experimental
2018-03-12 haddowk [chromite] Make guado_moblab important again
2018-03-13 chrome-bot Update config settings by config-updater.
2018-03-12 gmeinke chromium-config: replace cros_config_host_py in chromite
2018-03-12 yunlian Enable ThinLTO on all AMD64 boards.
2018-03-12 achuith cbuildbot: Log timing of GenerateUploadJSON.

Created with:
  roll-dep src/third_party/chromite
BUG=821930, 822517 , 821615 ,None,821618,821227,None,821664,821930,None,815377,747385,461595,821664,821664,811989,819419,821618,820305,821664,821664,819017,813442,707803,811989


The AutoRoll server is located here: https://chromite-chromium-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


TBR=chrome-os-gardeners@chromium.org

Change-Id: Ib6aaddf338307e994865a092ecb322a432148692
Reviewed-on: https://chromium-review.googlesource.com/967273
Commit-Queue: Chromite Chromium Autoroll <chromite-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Reviewed-by: Chromite Chromium Autoroll <chromite-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#543855}
[modify] https://crrev.com/b8e7c2d9a192a0e7c441c6f34284fea6ef68dcd5/DEPS