Failing on eve with: 

(https://pantheon.corp.google.com/storage/browser/chromeos-autotest-results/173382066-chromeos-test/chromeos6-row3-rack11-host1)

01/30 07:10:00.967 WARNI|              test:0637| The test failed with the following exception
Traceback (most recent call last):
  File "/usr/local/autotest/common_lib/test.py", line 631, in _exec
    _call_test_function(self.execute, *p_args, **p_dargs)
  File "/usr/local/autotest/common_lib/test.py", line 837, in _call_test_function
    raise error.UnhandledTestFail(e)
UnhandledTestFail: Unhandled TypeError: 'NoneType' object has no attribute '__getitem__'
Traceback (most recent call last):
  File "/usr/local/autotest/common_lib/test.py", line 831, in _call_test_function
    return func(*args, **dargs)
  File "/usr/local/autotest/common_lib/test.py", line 495, in execute
    dargs)
  File "/usr/local/autotest/common_lib/test.py", line 362, in _call_run_once_with_retry
    postprocess_profiled_run, args, dargs)
  File "/usr/local/autotest/common_lib/test.py", line 400, in _call_run_once
    self.run_once(*args, **dargs)
  File "/usr/local/autotest/cros/chrome_binary_test.py", line 145, in wrapper
    return func(*args, **kargs)
  File "/usr/local/autotest/tests/video_JpegDecodeAcceleratorPerf/video_JpegDecodeAcceleratorPerf.py", line 66, in run_once
    keyvals = self.test_power()
  File "/usr/local/autotest/tests/video_JpegDecodeAcceleratorPerf/video_JpegDecodeAcceleratorPerf.py", line 119, in test_power
    percent_initial_charge = self._power_status.percent_current_charge()
  File "/usr/local/autotest/cros/power/power_status.py", line 467, in percent_current_charge
    return self.battery[0].charge_now * 100 / \
TypeError: 'NoneType' object has no attribute '__getitem__'

01/30 07:10:00.970 DEBUG|              test:0642| Running cleanup for test.

Failing on peach_pit with:

(https://pantheon.corp.google.com/storage/browser/chromeos-autotest-results/173455004-chromeos-test/chromeos6-row2-rack10-host13)

01/30 15:35:01.057 WARNI|              test:0637| The test failed with the following exception
Traceback (most recent call last):
  File "/usr/local/autotest/common_lib/test.py", line 631, in _exec
    _call_test_function(self.execute, *p_args, **p_dargs)
  File "/usr/local/autotest/common_lib/test.py", line 831, in _call_test_function
    return func(*args, **dargs)
  File "/usr/local/autotest/common_lib/test.py", line 495, in execute
    dargs)
  File "/usr/local/autotest/common_lib/test.py", line 362, in _call_run_once_with_retry
    postprocess_profiled_run, args, dargs)
  File "/usr/local/autotest/common_lib/test.py", line 400, in _call_run_once
    self.run_once(*args, **dargs)
  File "/usr/local/autotest/cros/chrome_binary_test.py", line 145, in wrapper
    return func(*args, **kargs)
  File "/usr/local/autotest/tests/video_JpegDecodeAcceleratorPerf/video_JpegDecodeAcceleratorPerf.py", line 66, in run_once
    keyvals = self.test_power()
  File "/usr/local/autotest/tests/video_JpegDecodeAcceleratorPerf/video_JpegDecodeAcceleratorPerf.py", line 114, in test_power
    if not power_utils.charge_control_by_ectool(is_charge=False):
  File "/usr/local/autotest/cros/power/power_utils.py", line 189, in charge_control_by_ectool
    utils.run(ec_cmd_discharge)
  File "/usr/local/autotest/common_lib/utils.py", line 748, in run
    "Command returned non-zero exit status")
CmdError: Command <ectool chargecontrol discharge> failed, rc=1, Command returned non-zero exit status
* Command: 
    ectool chargecontrol discharge
Exit status: 1
Duration: 0.0151350498199

stderr:
ioctl -1, errno 74 (Bad message), EC result 1 (INVALID_COMMAND)
Is AC connected?