Findit identified the culprit r618765 as introducing flaky test(s)
summarized in https://findit-for-me.appspot.com/waterfall/flake/flake-culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyQwsSDEZsYWtlQ3VscHJpdCIxY2hyb21pdW0vMDMxYmU3NGZlY2RmOGNhYjQ0ZDhjMjI1NTVkY2E0MDMxZTkyMDQ3Mgw

Please revert the culprit or disable the test(s) asap. If you are the owner,
please fix!

If the culprit above is wrong, please file a bug using this link:
https://bugs.chromium.org/p/chromium/issues/entry?status=Unconfirmed&labels=Pri-1,Test-Findit-Wrong&components=Tools%3ETest%3EFindit%3EFlakiness&summary=%5BFindit%5D%20Flake%20Analyzer%20-%20Wrong%20culprit%20r618765&comment=Link%20to%20Culprit%3A%20https://findit-for-me.appspot.com/waterfall/flake/flake-culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyQwsSDEZsYWtlQ3VscHJpdCIxY2hyb21pdW0vMDMxYmU3NGZlY2RmOGNhYjQ0ZDhjMjI1NTVkY2E0MDMxZTkyMDQ3Mgw

Automatically posted by the findit-for-me app (https://goo.gl/Ot9f7N).

The detected culprit also contains a clang roll, potentially related to race condition in  issue 917380 ?

Disabling the test: https://crrev.com/c/1391654.
Let me remove this issue from sheriff queue. Some of *WalletSyncTests are failing and my CL reduces the coverage, so I'll leave the priority as P1 for now.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/014667f5f68a028cc6a3b98afbf01a8ec43ec65a

commit 014667f5f68a028cc6a3b98afbf01a8ec43ec65a
Author: Makoto Shimazu <shimazu@chromium.org>
Date: Fri Dec 28 05:18:35 2018

Disable TwoClientWalletSyncTest.ServerAddressConvertsToSameLocalAddress

TBR=jkrcal@chromium.org

No-Try: true
Bug: 917498
Change-Id: I4fd757258c7b352728d6ec88854b7d9bdfba8cf2
Reviewed-on: https://chromium-review.googlesource.com/c/1391654
Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Commit-Queue: Makoto Shimazu <shimazu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619121}
[modify] https://crrev.com/014667f5f68a028cc6a3b98afbf01a8ec43ec65a/chrome/browser/sync/test/integration/two_client_wallet_sync_test.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1fd1c0053d6246defcf62751d1d4ed9b7cd3de38

commit 1fd1c0053d6246defcf62751d1d4ed9b7cd3de38
Author: Jan Krcal <jkrcal@chromium.org>
Date: Mon Jan 07 17:58:05 2019

[AF Wallet Sync] Re-enable a sync integration test

This is a speculative fix of a flakiness that I cannot repro locally.
Even if the flakes re-appear, it is useful as it will help me
understand the issue more deeply.

Bug: 917498
Change-Id: I9bdbf48d2a8931f0e7584483fc6519f4c713d822
Reviewed-on: https://chromium-review.googlesource.com/c/1398281
Reviewed-by: Sebastien Seguin-Gagnon <sebsg@chromium.org>
Commit-Queue: Sebastien Seguin-Gagnon <sebsg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#620371}
[modify] https://crrev.com/1fd1c0053d6246defcf62751d1d4ed9b7cd3de38/chrome/browser/sync/test/integration/two_client_wallet_sync_test.cc

Another type of failure occurred on the waterfall. Let me copy the debug output here so that we have it archived:

[ RUN      ] USS/TwoClientWalletSyncTest.ServerAddressConvertsToSameLocalAddress/1
[10122:10122:0107/124818.677271:17239526382:WARNING:loopback_server.cc(719)] Loopback sync persistent state file does not exist.
[1:1:0107/124819.534340:INFO:hugepage_text.cc(68)] Mlocking text pages failed: Cannot allocate memory (12)
[10122:10122:0107/124820.300214:WARNING:chrome_browser_main_chromeos.cc(544)] Running as stub user with profile dir: test-user
[10122:10122:0107/124820.765260:WARNING:easy_unlock_service_regular.cc(438)] EasyUnlockServiceRegular::IsInLegacyHostMode: DeviceSyncClient not ready. Returning false.
[10122:10122:0107/124820.873368:INFO:remote_commands_service.cc(38)] Fetching remote commands.
[10122:10122:0107/124820.873626:WARNING:remote_commands_service.cc(40)] Client is not registered.
[10122:10122:0107/124820.875262:INFO:remote_commands_invalidator.cc(32)] Initialize RemoteCommandsInvalidator.
[10122:10122:0107/124820.875413:INFO:remote_commands_invalidator.cc(57)] Starting RemoteCommandsInvalidator.
[10122:10122:0107/124820.875521:INFO:remote_commands_invalidator.cc(123)] RemoteCommandsInvalidator ReloadPolicyData.
[10122:10122:0107/124820.875616:INFO:remote_commands_invalidator.cc(167)] Unregister RemoteCommandsInvalidator.
[10122:10122:0107/124821.173643:WARNING:wallpaper_controller_client.cc(358)] Cannot get wallpaper files id in RemovePolicyWallpaper. This should never happen under normal circumstances.
[10122:10122:0107/124821.616652:WARNING:personal_data_manager.cc(488)] 0x32978fd005a0 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124821.686102:WARNING:personal_data_manager.cc(488)] 0x32978fc2f860 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124822.008945:ERROR:gpu_interface_provider.cc(87)] Not implemented reached in virtual void content::GpuInterfaceProvider::RegisterOzoneGpuInterfaces(service_manager::BinderRegistry *)
[10122:10122:0107/124823.107959:WARNING:easy_unlock_service_regular.cc(438)] EasyUnlockServiceRegular::IsInLegacyHostMode: DeviceSyncClient not ready. Returning false.
[10122:10122:0107/124823.373408:INFO:remote_commands_service.cc(38)] Fetching remote commands.
[10122:10122:0107/124823.373711:WARNING:remote_commands_service.cc(40)] Client is not registered.
[10122:10122:0107/124823.373817:INFO:remote_commands_invalidator.cc(32)] Initialize RemoteCommandsInvalidator.
[10122:10122:0107/124823.373881:INFO:remote_commands_invalidator.cc(57)] Starting RemoteCommandsInvalidator.
[10122:10122:0107/124823.374018:INFO:remote_commands_invalidator.cc(123)] RemoteCommandsInvalidator ReloadPolicyData.
[10122:10122:0107/124823.374157:INFO:remote_commands_invalidator.cc(167)] Unregister RemoteCommandsInvalidator.
[10122:10122:0107/124823.402221:WARNING:personal_data_manager.cc(488)] 0x329791882020 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124823.648433:WARNING:easy_unlock_service_regular.cc(438)] EasyUnlockServiceRegular::IsInLegacyHostMode: DeviceSyncClient not ready. Returning false.
[10122:10122:0107/124823.835856:INFO:remote_commands_service.cc(38)] Fetching remote commands.
[10122:10122:0107/124823.835948:WARNING:remote_commands_service.cc(40)] Client is not registered.
[10122:10122:0107/124823.836073:INFO:remote_commands_invalidator.cc(32)] Initialize RemoteCommandsInvalidator.
[10122:10122:0107/124823.836157:INFO:remote_commands_invalidator.cc(57)] Starting RemoteCommandsInvalidator.
[10122:10122:0107/124823.836221:INFO:remote_commands_invalidator.cc(123)] RemoteCommandsInvalidator ReloadPolicyData.
[10122:10122:0107/124823.836276:INFO:remote_commands_invalidator.cc(167)] Unregister RemoteCommandsInvalidator.
[10122:10122:0107/124823.853698:WARNING:personal_data_manager.cc(488)] 0x32978f450860 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124824.080788:WARNING:easy_unlock_service_regular.cc(438)] EasyUnlockServiceRegular::IsInLegacyHostMode: DeviceSyncClient not ready. Returning false.
[10122:10122:0107/124824.177587:INFO:remote_commands_service.cc(38)] Fetching remote commands.
[10122:10122:0107/124824.178977:WARNING:remote_commands_service.cc(40)] Client is not registered.
[10122:10122:0107/124824.179769:INFO:remote_commands_invalidator.cc(32)] Initialize RemoteCommandsInvalidator.
[10122:10122:0107/124824.179897:INFO:remote_commands_invalidator.cc(57)] Starting RemoteCommandsInvalidator.
[10122:10122:0107/124824.179999:INFO:remote_commands_invalidator.cc(123)] RemoteCommandsInvalidator ReloadPolicyData.
[10122:10122:0107/124824.180084:INFO:remote_commands_invalidator.cc(167)] Unregister RemoteCommandsInvalidator.
[10122:10122:0107/124824.195145:WARNING:personal_data_manager.cc(488)] 0x3297922f92e0 refresh is done, notifying PersonalDataChanged
[10122:10353:0107/124824.352725:WARNING:sync_encryption_handler_impl.cc(1080)] Nigori had empty encryption keybag.
[10122:10353:0107/124824.356672:WARNING:sync_encryption_handler_impl.cc(1080)] Nigori had empty encryption keybag.
[10122:10122:0107/124824.385023:ERROR:chrome_device_id_helper.cc(42)] Device ID is not set for user.
[10122:10122:0107/124824.385630:INFO:profile_sync_service.cc(2033)] ConfigureDataTypeManager not invoked because datatypes cannot be configured now
[10122:10122:0107/124824.389871:INFO:profile_sync_service.cc(2033)] ConfigureDataTypeManager not invoked because datatypes cannot be configured now
[10122:10180:0107/124824.447575:WARNING:simple_synchronous_entry.cc(1362)] Could not open platform files for entry.
[10122:10122:0107/124824.480065:ERROR:account_tracker.cc(263)] OnOAuthError
[10122:10122:0107/124824.480107:WARNING:account_tracker.cc(189)] Failed to get UserInfo for user@gmail.com
[10122:10122:0107/124824.584710:WARNING:personal_data_manager.cc(496)] 0x329791882020 has synced new data, refreshing
[10122:10122:0107/124824.585132:WARNING:personal_data_manager.cc(496)] 0x329791882020 has synced new data, refreshing
[10122:10122:0107/124824.631925:WARNING:personal_data_manager.cc(488)] 0x329791882020 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124824.634062:WARNING:personal_data_manager.cc(2358)] 0x329791882020 converting address 0b96f366-ace9-4966-89fb-0a1aba08d4bc  John S. Doe John S. Doe  Company-1 1234 Fake Street App 2  DepLoc Cityville Stateful 90011 CEDEX US en 1.800.555.1234 0 1 1 1970-01-01 00:00:25.000 UTC
[10122:10211:0107/124824.634777:WARNING:autofill_wallet_metadata_syncable_service.cc(545)] 0x32978f563020 AutofillProfileChanged 0b96f366-ace9-4966-89fb-0a1aba08d4bc  John S. Doe John S. Doe  Company-1 1234 Fake Street App 2  DepLoc Cityville Stateful 90011 CEDEX US en 1.800.555.1234 0 1 1 1970-01-01 00:00:25.000 UTC
[10122:10122:0107/124824.641366:WARNING:personal_data_manager.cc(2315)] 0x329791882020 conversion of addresses done
[10122:10180:0107/124824.665364:WARNING:simple_synchronous_entry.cc(1362)] Could not open platform files for entry.
[10122:10122:0107/124824.672327:WARNING:personal_data_manager.cc(488)] 0x329791882020 refresh is done, notifying PersonalDataChanged
[10122:10367:0107/124824.690330:WARNING:sync_encryption_handler_impl.cc(1080)] Nigori had empty encryption keybag.
[10122:10367:0107/124824.692814:WARNING:sync_encryption_handler_impl.cc(1080)] Nigori had empty encryption keybag.
[10122:10122:0107/124824.726845:ERROR:chrome_device_id_helper.cc(42)] Device ID is not set for user.
[10122:10122:0107/124824.727413:INFO:profile_sync_service.cc(2033)] ConfigureDataTypeManager not invoked because datatypes cannot be configured now
[10122:10122:0107/124824.732587:INFO:profile_sync_service.cc(2033)] ConfigureDataTypeManager not invoked because datatypes cannot be configured now
[10122:10122:0107/124824.771478:ERROR:account_tracker.cc(263)] OnOAuthError
[10122:10122:0107/124824.771522:WARNING:account_tracker.cc(189)] Failed to get UserInfo for user@gmail.com
[10122:10122:0107/124824.880176:WARNING:personal_data_manager.cc(496)] 0x32978f450860 has synced new data, refreshing
[10122:10122:0107/124824.890265:WARNING:personal_data_manager.cc(488)] 0x32978f450860 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124824.891681:WARNING:personal_data_manager.cc(2358)] 0x32978f450860 converting address 4f964252-ef59-4996-a20f-680f5727e050  John S. Doe John S. Doe  Company-1 1234 Fake Street App 2  DepLoc Cityville Stateful 90011 CEDEX US en 1.800.555.1234 0 1 1 1970-01-01 00:00:25.000 UTC
[10122:10122:0107/124824.894862:WARNING:personal_data_manager.cc(2315)] 0x32978f450860 conversion of addresses done
[10122:10211:0107/124824.916684:WARNING:autofill_wallet_metadata_syncable_service.cc(666)] 0x32978f620820 Applying change from sync 69b2da63-2e17-43e0-abc9-80164f5e0418  John S. Doe John S. Doe  Company-1 1234 Fake Street App 2  DepLoc Cityville Stateful 90011 CEDEX US en 1.800.555.1234 0 1 1 1970-01-01 00:00:25.000 UTC
[10122:10211:0107/124824.918469:WARNING:autofill_wallet_metadata_syncable_service.cc(767)] 0x32978f620820 MergeData notify the PDM
[10122:10211:0107/124824.918958:WARNING:autofill_wallet_metadata_syncable_service.cc(545)] 0x32978f620820 AutofillProfileChanged 4f964252-ef59-4996-a20f-680f5727e050  John S. Doe John S. Doe  Company-1 1234 Fake Street App 2  DepLoc Cityville Stateful 90011 CEDEX US en 1.800.555.1234 0 1 1 1970-01-01 00:00:25.000 UTC
[10122:10211:0107/124824.919038:WARNING:autofill_wallet_metadata_syncable_service.cc(550)] 0x32978f620820 Nothing has changed, not syncing up.
[10122:10122:0107/124824.920188:WARNING:personal_data_manager.cc(496)] 0x32978f450860 has synced new data, refreshing
[10122:10122:0107/124824.920616:WARNING:personal_data_manager.cc(496)] 0x32978f450860 has synced new data, refreshing
[10122:10122:0107/124824.997423:WARNING:personal_data_manager.cc(488)] 0x32978f450860 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124825.008895:WARNING:personal_data_manager.cc(488)] 0x329791882020 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124825.065806:WARNING:personal_data_manager.cc(488)] 0x32978f450860 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124825.081436:WARNING:personal_data_manager.cc(488)] 0x329791882020 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124825.090611:WARNING:personal_data_manager.cc(488)] 0x32978f450860 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124825.105029:WARNING:personal_data_manager.cc(488)] 0x329791882020 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124825.114161:WARNING:personal_data_manager.cc(488)] 0x32978f450860 refresh is done, notifying PersonalDataChanged
../../chrome/browser/sync/test/integration/two_client_wallet_sync_test.cc:590: Failure
Expected equality of these values:
  1u
    Which is: 1
  local_addresses_1.size()
    Which is: 2
Stack trace:
#0 0x555a8c123e20 StackTraceGetter::CurrentStackTrace()
#1 0x555a8c14a1f7 testing::internal::UnitTestImpl::CurrentOsStackTraceExceptTop()
#2 0x555a8c149653 testing::internal::AssertHelper::operator=()
#3 0x555a8c0efddb (anonymous namespace)::TwoClientWalletSyncTest_ServerAddressConvertsToSameLocalAddress_Test::RunTestOnMainThread()
#4 0x555a96fa4ffc content::BrowserTestBase::ProxyRunTestOnMainThreadLoop()
#5 0x555a8c2e135d _ZN4base8internal13FunctorTraitsIMN18OAuth2TokenService7FetcherEFvvEvE6InvokeIS5_PS3_JEEEvT_OT0_DpOT1_
#6 0x555a8c2e12a4 _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIMN18OAuth2TokenService7FetcherEFvvEJPS5_EEEvOT_DpOT0_
#7 0x555a96fa7f65 _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserTestBaseEFvvEJNS0_17UnretainedWrapperIS4_EEEEEFvvEE7RunImplIRKS6_RKNSt4__Cr5tupleIJS8_EEEJLm0EEEEvOT_OT0_NSF_16integer_sequenceImJXspT1_EEEE
#8 0x555a96fa7e9c _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserTestBaseEFvvEJNS0_17UnretainedWrapperIS4_EEEEEFvvEE3RunEPNS0_13BindStateBaseE
#9 0x555a8bebd9bd _ZNKR4base17RepeatingCallbackIFvvEE3RunEv
#10 0x555a90ea8cf0 ChromeBrowserMainParts::PreMainMessageLoopRunImpl()
#11 0x555a90ea6e84 ChromeBrowserMainParts::PreMainMessageLoopRun()
#12 0x555a8ec9c32b chromeos::ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun()
#13 0x7fc6aa239212 content::BrowserMainLoop::PreMainMessageLoopRun()
#14 0x7fc6a8e2bd4d _ZN4base8internal13FunctorTraitsIMN7content12ChildProcessEFvvEvE6InvokeIS5_PS3_JEEEvT_OT0_DpOT1_
#15 0x7fc6a8e2bc94 _ZN4base8internal12InvokeHelperILb0EvE8MakeItSoIMN7content12ChildProcessEFvvEJPS5_EEEvOT_DpOT0_
#16 0x7fc6aa23f005 _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserMainLoopEFivEJNS0_17UnretainedWrapperIS4_EEEEEFivEE7RunImplIRKS6_RKNSt4__Cr5tupleIJS8_EEEJLm0EEEEiOT_OT0_NSF_16integer_sequenceImJXspT1_EEEE
#17 0x7fc6aa23ef3c _ZN4base8internal7InvokerINS0_9BindStateIMN7content15BrowserMainLoopEFivEJNS0_17UnretainedWrapperIS4_EEEEEFivEE3RunEPNS0_13BindStateBaseE
#18 0x7fc6a8d31aad _ZNKR4base17RepeatingCallbackIFvvEE3RunEv
#19 0x7fc6ab231c7d content::StartupTaskRunner::RunAllTasksNow()
#20 0x7fc6aa234d6f content::BrowserMainLoop::CreateStartupTasks()
#21 0x7fc6aa241683 content::BrowserMainRunnerImpl::Initialize()
#22 0x7fc6aa22c689 content::BrowserMain()
#23 0x7fc6ac5cb560 content::RunBrowserProcessMain()
#24 0x7fc6ac5ce9d5 content::ContentMainRunnerImpl::RunServiceManager()
#25 0x7fc6ac5cd59c content::ContentMainRunnerImpl::Run()
#26 0x7fc6ac5c42fc content::ContentServiceManagerMainDelegate::RunEmbedderProcess()
#27 0x7fc67c4c3ff4 service_manager::Main()
#28 0x7fc6ac5c8c45 content::ContentMain()
#29 0x555a96fa44a4 content::BrowserTestBase::SetUp()
#30 0x555a90b87758 InProcessBrowserTest::SetUp()
#31 0x555a90b494de SyncTest::SetUp()
#32 0x555a8c18b3be testing::internal::HandleSehExceptionsInMethodIfSupported<>()

[10122:10122:0107/124825.464413:WARNING:personal_data_manager.cc(496)] 0x329791882020 has synced new data, refreshing
[10122:10122:0107/124825.535269:WARNING:personal_data_manager.cc(488)] 0x329791882020 refresh is done, notifying PersonalDataChanged
[10122:10122:0107/124825.980705:INFO:remote_commands_invalidator.cc(45)] Shutdown RemoteCommandsInvalidator.
[10122:10122:0107/124825.980816:INFO:remote_commands_invalidator.cc(68)] Stopping RemoteCommandsInvalidator.
[10122:10122:0107/124825.980881:INFO:remote_commands_invalidator.cc(167)] Unregister RemoteCommandsInvalidator.
[10122:10122:0107/124826.050024:ERROR:http_bridge.cc(126)] Not implemented reached in virtual void syncer::HttpBridgeFactory::OnSignalReceived()
[10122:10122:0107/124826.054218:INFO:remote_commands_invalidator.cc(45)] Shutdown RemoteCommandsInvalidator.
[10122:10122:0107/124826.054318:INFO:remote_commands_invalidator.cc(68)] Stopping RemoteCommandsInvalidator.
[10122:10122:0107/124826.055094:INFO:remote_commands_invalidator.cc(167)] Unregister RemoteCommandsInvalidator.
[10122:10122:0107/124826.127052:INFO:remote_commands_invalidator.cc(45)] Shutdown RemoteCommandsInvalidator.
[10122:10122:0107/124826.127215:INFO:remote_commands_invalidator.cc(68)] Stopping RemoteCommandsInvalidator.
[10122:10122:0107/124826.127303:INFO:remote_commands_invalidator.cc(167)] Unregister RemoteCommandsInvalidator.
[10122:10122:0107/124826.197548:INFO:remote_commands_invalidator.cc(45)] Shutdown RemoteCommandsInvalidator.
[10122:10122:0107/124826.197707:INFO:remote_commands_invalidator.cc(68)] Stopping RemoteCommandsInvalidator.
[10122:10122:0107/124826.197790:INFO:remote_commands_invalidator.cc(167)] Unregister RemoteCommandsInvalidator.
[10122:10183:0107/124826.300236:WARNING:discardable_shared_memory_manager.cc(410)] Some MojoDiscardableSharedMemoryManagerImpls are still alive. They will be leaked.
[10122:10450:0107/124826.306563:WARNING:internal_linux.cc(64)] Failed to read /proc/10201/stat
[10122:10122:0107/124826.317190:WARNING:pref_notifier_impl.cc(23)] Pref observer found at shutdown.
[10122:10122:0107/124826.317258:WARNING:pref_notifier_impl.cc(23)] Pref observer found at shutdown.
[  FAILED  ] USS/TwoClientWalletSyncTest.ServerAddressConvertsToSameLocalAddress/1, where GetParam() = true (7660 ms)

The way I interpret the logs is that it is a rare race condition where:
 - PDM posts tasks to the DB thread to insert a new (converted) local address A
 - bridge inserts a newly synced (converted) local address B
 - the posted task inserts the address A to the DB

So we end up with local addresses {A,B} that are equivalent, except for GUIDs. Some time later on the addresses will get de-duped by the PDM.

Without significant architectural changes, the race condition is hard to get rid of.

One hack/solution would be to relax the expectations to allow this behavior. 

I need to wait for a couple more days to see if this is the only type of failure that happens on the waterfall. Decreasing prio in the mean-time.

Adding more observations from https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=sync_integration_tests&tests=USS%2FTwoClientWalletSyncTest.ServerAddressConvertsToSameLocalAddress

Linux TSan Tests fail often due to a different  Issue 917385 . I won't deal with it here.

There is another type of failure - crash, with the following log:

[ RUN      ] USS/TwoClientWalletSyncTest.ServerAddressConvertsToSameLocalAddress/1
[39016:775:0108/191130.706962:13414029588665:WARNING:loopback_server.cc(719)] Loopback sync persistent state file does not exist.
[39016:9223:0108/191130.909027:WARNING:notification_platform_bridge_mac.mm(522)] AlertNotificationService: XPC connection invalidated.
[39016:118787:0108/191132.998219:WARNING:sync_encryption_handler_impl.cc(1080)] Nigori had empty encryption keybag.
[39016:118787:0108/191133.001489:WARNING:sync_encryption_handler_impl.cc(1080)] Nigori had empty encryption keybag.
[39016:775:0108/191133.036993:ERROR:account_tracker.cc(263)] OnOAuthError
[39016:775:0108/191133.037041:WARNING:account_tracker.cc(189)] Failed to get UserInfo for gaia_id_for_user_gmail.com
[39016:122115:0108/191133.066551:WARNING:sync_encryption_handler_impl.cc(1080)] Nigori had empty encryption keybag.
[39016:122115:0108/191133.067242:WARNING:sync_encryption_handler_impl.cc(1080)] Nigori had empty encryption keybag.
[39016:775:0108/191133.105129:ERROR:account_tracker.cc(263)] OnOAuthError
[39016:775:0108/191133.105172:WARNING:account_tracker.cc(189)] Failed to get UserInfo for gaia_id_for_user_gmail.com
../../chrome/browser/sync/test/integration/two_client_wallet_sync_test.cc:590: Failure
Expected equality of these values:
  1u
    Which is: 1
  local_addresses_1.size()
    Which is: 0
Stack trace:
0   sync_integration_tests              0x0000000109e3f62b testing::internal::UnitTestImpl::CurrentOsStackTraceExceptTop(int) + 91
1   sync_integration_tests              0x0000000109e3ef49 testing::internal::AssertHelper::operator=(testing::Message const&) const + 89
2   sync_integration_tests              0x0000000109e2803a (anonymous namespace)::TwoClientWalletSyncTest_ServerAddressConvertsToSameLocalAddress_Test::RunTestOnMainThread() + 2378
3   sync_integration_tests              0x00000001123e6a4b content::BrowserTestBase::ProxyRunTestOnMainThreadLoop() + 491
4   sync_integration_tests              0x000000010d3a2609 ChromeBrowserMainParts::PreMainMessageLoopRunImpl() + 4313
5   sync_integration_tests              0x000000010d3a146d ChromeBrowserMainParts::PreMainMessageLoopRun() + 45
6   sync_integration_tests              0x000000010af15632 content::BrowserMainLoop::PreMainMessageLoopRun() + 50
7   sync_integration_tests              0x000000010b37dea7 content::StartupTaskRunner::RunAllTasksNow() + 39
8   sync_integration_tests              0x000000010af141db content::BrowserMainLoop::CreateStartupTasks() + 683
9   sync_integration_tests              0x000000010af178b2 content::BrowserMainRunnerImpl::Initialize(content::MainFunctionParams const&) + 82
10  sync_integration_tests              0x000000010af12646 content::BrowserMain(content::MainFunctionParams const&) + 182
11  sync_integration_tests              0x000000010c8ca040 content::ContentMainRunnerImpl::RunServiceManager(content::MainFunctionParams&, bool) + 848
12  sync_integration_tests              0x000000010c8c9cc4 content::ContentMainRunnerImpl::Run(bool) + 292
13  sync_integration_tests              0x000000010fb4dc80 service_manager::Main(service_manager::MainParams const&) + 2352
14  sync_integration_tests              0x000000010c8c8e84 content::ContentMain(content::ContentMainParams const&) + 68
15  sync_integration_tests              0x00000001123e6699 content::BrowserTestBase::SetUp() + 2809
16  sync_integration_tests              0x000000010ccc3a50 InProcessBrowserTest::SetUp() + 528
17  sync_integration_tests              0x000000010ccad8ce SyncTest::SetUp() + 766

(which then segfaults on the following line).

This seems weird because the log has no address conversion involved. The Checker must be somehow broken.

The NextAction date has arrived: 2019-01-11