It looks like a Telemetry change last Friday broke the Win8 GPU bots:

https://build.chromium.org/p/chromium.gpu.fyi/builders/Win8%20Release%20%28NVIDIA%29?numbuilds=200
https://build.chromium.org/p/chromium.gpu.fyi/builders/Win8%20Debug%20%28NVIDIA%29?numbuilds=200

First failing builds:

https://build.chromium.org/p/chromium.gpu.fyi/builders/Win8%20Release%20%28NVIDIA%29/builds/21137
https://build.chromium.org/p/chromium.gpu.fyi/builders/Win8%20Debug%20%28NVIDIA%29/builds/12525

Failure mode:

(WARNING) 2016-03-25 19:26:17,178 desktop_browser_finder.FindAllAvailableBrowsers:148  Chrome build location for win_AMD64 not found. Browser will be run without Flash.
(INFO) 2016-03-25 19:26:17,180 browser_finder.FindBrowser:122  Chose browser: PossibleDesktopBrowser(type=release, executable=c:\users\chrome~1\appdata\local\temp\rungtjkzc\out\Release\chrome.exe, flash=None)
(WARNING) 2016-03-25 19:26:17,180 desktop_browser_finder.FindAllAvailableBrowsers:148  Chrome build location for win_AMD64 not found. Browser will be run without Flash.
(INFO) 2016-03-25 19:26:17,181 browser_finder.FindBrowser:122  Chose browser: PossibleDesktopBrowser(type=release, executable=c:\users\chrome~1\appdata\local\temp\rungtjkzc\out\Release\chrome.exe, flash=None)
(INFO) 2016-03-25 19:26:17,181 exception_formatter.PrintFormattedException:20  Try printing formatted exception: None None None

Traceback (most recent call last):
  RunBenchmark at third_party\catapult\telemetry\telemetry\internal\story_runner.py:311
    benchmark.ShouldTearDownStateAfterEachStoryRun())
  Run at third_party\catapult\telemetry\telemetry\internal\story_runner.py:220
    test, finder_options.Copy(), story_set)
  __init__ at third_party\catapult\telemetry\telemetry\page\shared_page_state.py:79
    self._test, finder_options)
  _GetPossibleBrowser at third_party\catapult\telemetry\telemetry\page\shared_page_state.py:122
    enabled, msg = decorators.IsEnabled(test, possible_browser)
  IsEnabled at third_party\catapult\telemetry\telemetry\decorators.py:187
    should_skip, msg = ShouldSkip(test, possible_browser)
  ShouldSkip at third_party\catapult\telemetry\telemetry\decorators.py:193
    platform_attributes = _PlatformAttributes(possible_browser)
  _PlatformAttributes at third_party\catapult\telemetry\telemetry\decorators.py:240
    possible_browser.platform.GetOSVersionName(),
  GetOSVersionName at third_party\catapult\telemetry\telemetry\core\platform.py:144
    return self._platform_backend.GetOSVersionName()
  Cacher at third_party\catapult\telemetry\telemetry\decorators.py:34
    cacher.__cache[key] = obj(*args, **kwargs)
  GetOSVersionName at third_party\catapult\telemetry\telemetry\internal\platform\win_platform_backend.py:251
    value, _ = winreg.QueryValueEx(key, 'CurrentMajorVersionNumber')
WindowsError: [Error 2] The system cannot find the file specified

Locals:
  key        : <PyHKEY object at 0x032C6780>
  key_name   : 'Software\\Microsoft\\Windows NT\\CurrentVersion'
  os_version : '6.2.9200'

[  PASSED  ] 0 tests.


Ned, could you please find someone to look into this? Marking P1 as these bots are broken.