network_WiFi_ChromeEndToEnd Test fails with an unclear reason ("network_ChromeWifiEndToEnd client test did not pass."). I manually (nyan_big tried scenarios this testcase is checking and there seems to be no issue . Looks like something is failing on the script side or lab setup. 

Results @ https://wmatrix.googleplex.com/failures/unfiltered?suites=wifi_endtoend&days_back=10&releases=tot&hide_missing=True

Sample Failure,

Traceback (most recent call last):
  File "/usr/local/autotest/client/common_lib/test.py", line 600, in _exec
    _call_test_function(self.execute, *p_args, **p_dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 804, in _call_test_function
    return func(*args, **dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 461, in execute
    dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 347, in _call_run_once_with_retry
    postprocess_profiled_run, args, dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 376, in _call_run_once
    self.run_once(*args, **dargs)
  File "/usr/local/autotest/server/site_tests/network_WiFi_ChromeEndToEnd/network_WiFi_ChromeEndToEnd.py", line 49, in run_once
    test=test, check_client_result=True)
  File "/usr/local/autotest/server/autotest.py", line 504, in run_test
    *args, **dargs)
  File "/usr/local/autotest/server/autotest.py", line 495, in run_timed_test
    self._check_client_test_result(host, test_name)
  File "/usr/local/autotest/server/autotest.py", line 473, in _check_client_test_result
    raise error.TestFail('%s client test did not pass.' % test_name)
TestFail: network_ChromeWifiEndToEnd client test did not pass.
05/24 13:23:21.376 INFO |       wifi_client:1292| ======= WiFi autotest complete. Cleaning up... =======

https://uberchromeos-server38.corp.google.com/new_tko/#tab_id=table_view&columns=test_idx%252Ctest_name%252Cjob_tag%252Chostname%252Cstatus%252Creason&sort=test_name%252Cstatus&condition=(status+%253C%253E+%2527GOOD%2527)+AND+(+%2560status%2560+%253D+%2527FAIL%2527+AND+%2560reason%2560+%253D+%2527network_ChromeWifiEndToEnd+client+test+did+not+pass.%2527)&show_invalid=false&parameterized_field_0_type=Test+label&parameterized_field_0_value=invalidated