e.g. https://ci.chromium.org/p/chromium/builders/luci.chromium.try/linux_chromium_rel_ng/204604

Sample output:
$ out/Release/content_browsertests --enable-features=ServiceWorkerServicification --gtest_filter='*SignedExchangeAcceptHeaderBrowserTest.ServiceWorkerPrefetch/3'

../../content/browser/web_package/signed_exchange_request_handler_browsertest.cc:492: Failure
  Expected equality of these values:
    *accept_header
      Which is: "*/*"
    should_have_sxg ? (is_navigation ? std::string(network::kFrameAcceptHeader) + std::string(kAcceptHeaderSignedExchangeSuffix) : std::string(kExpectedSXGEnabledAcceptHeaderForPrefetch)) : (is_navigation ? std::string(network::kFrameAcceptHeader) : std::string(network::kDefaultAcceptHeader))
      Which is: "application/signed-exchange;v=b2;q=0.9,*/*;q=0.8"
  Google Test trace:
  ../../content/browser/web_package/signed_exchange_request_handler_browsertest.cc:504: https://127.0.0.1:34491/sxg/hello.txt
  Stack trace:
  #0 0x000002b48d9c testing::internal::UnitTestImpl::CurrentOsStackTraceExceptTop()
  #1 0x000002b48769 testing::internal::AssertHelper::operator=()
  #2 0x000002030dea content::SignedExchangeAcceptHeaderBrowserTest::CheckAcceptHeader()
  #3 0x00000202ee11 content::SignedExchangeAcceptHeaderBrowserTest_ServiceWorkerPrefetch_Test::RunTestOnMainThread()
  #4 0x00000491fb32 content::BrowserTestBase::ProxyRunTestOnMainThreadLoop()
  #5 0x0000049c1ef6 content::ShellBrowserMainParts::PreMainMessageLoopRun()
  #6 0x000004138e1a content::BrowserMainLoop::PreMainMessageLoopRun()
  #7 0x00000463e9a5 content::StartupTaskRunner::RunAllTasksNow()
  #8 0x0000041377b7 content::BrowserMainLoop::CreateStartupTasks()
  #9 0x00000413b9ed content::BrowserMainRunnerImpl::Initialize()
  #10 0x0000049c193a ShellBrowserMain()
  #11 0x00000497c280 content::ShellMainDelegate::RunProcess()
  #12 0x00000402b431 content::ContentMainRunnerImpl::Run()
  #13 0x00000649b159 service_manager::Main()
  #14 0x000002eb9041 content::ContentMain()
  #15 0x00000491f68d content::BrowserTestBase::SetUp()
  #16 0x00000202fc6e content::SignedExchangeAcceptHeaderBrowserTest::SetUp()