All failures are caused by the test.
https://uberchromegw.corp.google.com/i/chromium.win/builders/Win10%20Tests%20x64?numbuilds=200

The first failed build: https://uberchromegw.corp.google.com/i/chromium.win/builders/Win10%20Tests%20x64/builds/20962


Log (looks like a crash, have no idea why it is flaky)

[5648:7160:0221/033742.719:WARNING:chrome_browser_main_win.cc(615)] Command line too long for RegisterApplicationRestart:  --brave-new-test-launcher --cfi-diag=0 --gtest_also_run_disabled_tests --gtest_filter=PaymentRequestCvcUnmaskViewControllerTest.OpenGoBackOpenPay --single_process --test-launcher-bot-mode --test-launcher-output="C:\Users\CHROME~1\AppData\Local\Temp\scoped_dir1820_11100\results1820_80\test_results.xml" --test-launcher-summary-output="C:\b\s\w\ioqliikz\output.json" --user-data-dir="C:\Users\CHROME~1\AppData\Local\Temp\scoped_dir1820_11100\d1820_1083" --disable-offline-auto-reload --ignore-certificate-errors --no-first-run --no-default-browser-check --enable-logging=stderr --disable-default-apps --wm-window-animations-disabled --disable-component-update --test-type=browser --force-color-profile=srgb --disable-zero-browsers-open-for-tests --ipc-connection-timeout=30 --allow-file-access-from-files --dom-automation --log-gpu-control-list-decisions --disable-backgrounding-occluded-windows --disable-gl-drawing-for-tests --override-use-software-gl-for-tests --force-color-profile=srgb --disable-compositor-ukm-for-tests --enable-features=TestFeatureForBrowserTest1 --disable-features=NetworkPrediction,TestFeatureForBrowserTest2 --flag-switches-begin --flag-switches-end --restore-last-session about:blank
[5648:4348:0221/033743.575:WARNING:embedded_test_server.cc(228)] Request not handled. Returning 404: /favicon.ico
[5648:7160:0221/033743.603:INFO:CONSOLE(14)] "PaymentRequest's supportedMethods taking an array is deprecated and will be removed in M64, around January 2018. Please use a single string instead. See https://www.chromestatus.com/features/5177301645918208 for more details.", source: https://a.com:64101/no_shipping.js (14)
[5648:7160:0221/033743.604:INFO:CONSOLE(14)] "Card issuer network ("amex", "diners", "discover", "jcb", "mastercard", "mir", "unionpay", "visa") as payment method is deprecated and will be removed in M64, around January 2018. Please use payment method name "basic-card" with issuer network in the "supportedNetworks" field instead. See https://www.chromestatus.com/features/5725727580225536 for more details.", source: https://a.com:64101/no_shipping.js (14)
Received fatal exception EXCEPTION_ACCESS_VIOLATION
Backtrace:
	payments::AutofillPaymentInstrument::GenerateBasicCardResponse [0x00007FF727EC09F6+166]
	autofill::AddressNormalizerImpl::NormalizationRequest::OnRulesLoaded [0x00007FF727EADB8D+173]
	autofill::AddressNormalizerImpl::OnAddressValidationRulesLoaded [0x00007FF727EAE1CB+123]
	autofill::AddressValidator::RulesLoaded [0x00007FF727EB30D0+64]
	i18n::addressinput::PreloadSupplier::`scalar deleting destructor' [0x00007FF727EB1E9B+3291]
	i18n::addressinput::Retriever::Retrieve [0x00007FF727EB3F57+279]
	autofill::ChromeMetadataSource::OnURLFetchComplete [0x00007FF727EAF841+225]
	base::internal::Invoker<base::internal::BindState<void (__cdecl media::PipelineImpl::RendererWrapper::*)(base::TimeDelta) __ptr64,base::internal::UnretainedWrapper<media::PipelineImpl::RendererWrapper>,base::TimeDelta>,void __cdecl(void)>::Run [0x00007FF72389FA51+49]
	base::debug::TaskAnnotator::RunTask [0x00007FF724CCBF4A+218]
	base::MessageLoop::RunTask [0x00007FF724C7B78C+572]
	base::MessageLoop::DoWork [0x00007FF724C7BCF8+408]
	base::MessagePumpForUI::DoRunLoop [0x00007FF724CF1DF9+169]
	base::MessagePumpWin::Run [0x00007FF724CF1978+104]
	base::RunLoop::Run [0x00007FF724C55395+53]
	payments::PaymentRequestBrowserTestBase::ClickOnDialogViewAndWait [0x00007FF723150493+339]
	payments::PaymentRequestBrowserTestBase::PayWithCreditCardAndWait [0x00007FF723150C97+151]
	payments::PaymentRequestCvcUnmaskViewControllerTest_OpenGoBackOpenPay_Test::RunTestOnMainThread [0x00007FF723140753+355]
	content::BrowserTestBase::ProxyRunTestOnMainThreadLoop [0x00007FF724DB0D78+296]
	ChromeBrowserMainParts::PreMainMessageLoopRunImpl [0x00007FF72541B868+4568]
	ChromeBrowserMainParts::PreMainMessageLoopRun [0x00007FF72541A586+182]
	content::BrowserMainLoop::PreMainMessageLoopRun [0x00007FF723C7ED65+85]
	content::StartupTaskRunner::RunAllTasksNow [0x00007FF723F73B6C+28]
	content::BrowserMainLoop::CreateStartupTasks [0x00007FF723C7D65B+635]
	content::BrowserMainRunnerImpl::Initialize [0x00007FF723C8184E+126]
	content::BrowserMain [0x00007FF723C7B610+176]
	content::ContentMainRunnerImpl::Run [0x00007FF724C1A334+292]
	service_manager::Main [0x00007FF725E9E2DD+1117]
	content::ContentMain [0x00007FF724C19C71+65]
	content::BrowserTestBase::SetUp [0x00007FF724DB0B44+1716]
	InProcessBrowserTest::SetUp [0x00007FF724D0D03A+346]
	testing::Test::Run [0x00007FF72347B648+104]
	testing::TestInfo::Run [0x00007FF72347BF26+214]
	testing::TestCase::Run [0x00007FF72347C30A+250]
	testing::internal::UnitTestImpl::RunAllTests [0x00007FF723480B2F+671]
	testing::UnitTest::Run [0x00007FF7234807B5+165]
	base::TestSuite::Run [0x00007FF724D27BE6+118]
	ChromeTestSuiteRunner::RunTestSuite [0x00007FF727BD949F+95]
	content::LaunchTests [0x00007FF724DA2768+424]
	LaunchChromeTests [0x00007FF727BD996E+318]
	main [0x00007FF727BD93F8+132]
	__scrt_common_main_seh [0x00007FF7286DF6A9+285] (f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283)
	BaseThreadInitThunk [0x00007FFBED108364+20]
	RtlUserThreadStart [0x00007FFBEE0E5E91+33]