Output excerpt:

[1028/213927:test_installer.py(154)] Beginning action test_chrome_with_chromedriver_user
[1028/213929:test_installer.py(228)] stdout:
[1028/213929:test_chrome_with_chromedriver.py(76)] 
Traceback (most recent call last):
  File "test_chrome_with_chromedriver.py", line 132, in <module>
    sys.exit(main())
  File "test_chrome_with_chromedriver.py", line 121, in main
    with CreateChromedriver(args) as driver:
  File "e:\b\s\w\ir\cipd_bin_packages\bin\Lib\contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "test_chrome_with_chromedriver.py", line 72, in CreateChromedriver
    chrome_options=chrome_options)
  File "e:\b\s\w\ir\cache\builder\src\chrome\test\mini_installer\..\..\..\third_party\webdriver\pylib\selenium\webdriver\chrome\webdriver.py", line 66, in __init__
    desired_capabilities=desired_capabilities)
  File "e:\b\s\w\ir\cache\builder\src\chrome\test\mini_installer\..\..\..\third_party\webdriver\pylib\selenium\webdriver\remote\webdriver.py", line 64, in __init__
    self.start_session(desired_capabilities, browser_profile)
  File "e:\b\s\w\ir\cache\builder\src\chrome\test\mini_installer\..\..\..\third_party\webdriver\pylib\selenium\webdriver\remote\webdriver.py", line 106, in start_session
    'desiredCapabilities': desired_capabilities,
  File "e:\b\s\w\ir\cache\builder\src\chrome\test\mini_installer\..\..\..\third_party\webdriver\pylib\selenium\webdriver\remote\webdriver.py", line 157, in execute
    self.error_handler.check_response(response)
  File "e:\b\s\w\ir\cache\builder\src\chrome\test\mini_installer\..\..\..\third_party\webdriver\pylib\selenium\webdriver\remote\errorhandler.py", line 149, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: u"unknown error: Chrome failed to start: crashed\n  (unknown error: DevToolsActivePort file doesn't exist)\n  (The process started from chrome location C:\\Users\\chrome-bot\\AppData\\Local\\Chromium\\Application\\chrome.exe is no longer running, so ChromeDriver is assuming that Chrome has crashed.)\n  (Driver info: chromedriver=2.43.603408 (a71019a8bf0ef8ed964b38b21f77e40852433081),platform=Windows NT 6.1.7601 SP1 x86_64)" 
ERROR
ChromeUserLevelUpdate: no_pv -> install_chrome_user -> chrome_user_installed_not_inuse -> update_chrome_user -> chrome_user_updated_not_inuse -> test_chrome_with_chromedriver_user -> chrome_user_installed_not_inuse -> uninstall_chrome_user -> clean

grt@ can you take a look?

The builder's gone green again, so perhaps someone fixed whatever was (presumably) crashing chrome.exe at startup. I'll keep an eye on it for today.

Six green runs in a row. Closing this out.