Unexpected error while uploading histogram data: Traceback (most recent call last):
  File "E:\b\c\b\Win_7_Nvidia_GPU_Perf\src\tools\perf\core\results_dashboard.py", line 116, in SendResults
    service_account_file, token_generator_callback)
  File "E:\b\c\b\Win_7_Nvidia_GPU_Perf\src\tools\perf\core\results_dashboard.py", line 484, in _SendHistogramJson
    url + SEND_HISTOGRAMS_PATH, method='POST', body=data, headers=headers)
  File "E:\b\rr\tmpzbvuqk\rw\checkout\third_party\httplib2\python2\httplib2\__init__.py", line 1593, in request
    (response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
  File "E:\b\rr\tmpzbvuqk\rw\checkout\third_party\httplib2\python2\httplib2\__init__.py", line 1335, in _request
    (response, content) = self._conn_request(conn, request_uri, method, body, headers)
  File "E:\b\rr\tmpzbvuqk\rw\checkout\third_party\httplib2\python2\httplib2\__init__.py", line 1291, in _conn_request
    response = conn.getresponse()
  File "E:\b\depot_tools\win_tools-2_7_6_bin\python\bin\lib\httplib.py", line 1033, in getresponse
    raise ResponseNotReady()
ResponseNotReady

(https://logs.chromium.org/v/?s=chrome%2Fbb%2Fchromium.perf%2FWin_7_Nvidia_GPU_Perf%2F3077%2F%2B%2Frecipes%2Fsteps%2Fperformance_test_suite_on_NVIDIA_GPU_on_Windows_on_Windows-2008ServerR2-SP1%2F0%2Flogs%2FMerge_script_log%2F0)