This dut keeps on failing provision the same way (timing out when copying  stateful payload to device) and repair just keeps bringing it back to life.  Locking the dut for now to avoid suites to fail for this.

https://pantheon.corp.google.com/storage/browser/chromeos-autotest-results/hosts/chromeos6-row2-rack14-host8/571597-provision/20171101224740/

START	----	provision	timestamp=1484236812	localtime=Jan 12 08:00:12	
	GOOD	----	verify.ssh	timestamp=1484236815	localtime=Jan 12 08:00:15	
	GOOD	----	verify.update	timestamp=1484236823	localtime=Jan 12 08:00:23	
	GOOD	----	verify.brd_config	timestamp=1484236824	localtime=Jan 12 08:00:24	
	GOOD	----	verify.ser_config	timestamp=1484236824	localtime=Jan 12 08:00:24	
	GOOD	----	verify.job	timestamp=1484236824	localtime=Jan 12 08:00:24	
	GOOD	----	verify.servod	timestamp=1484236827	localtime=Jan 12 08:00:27	
	GOOD	----	verify.pwr_button	timestamp=1484236827	localtime=Jan 12 08:00:27	
	GOOD	----	verify.lid_open	timestamp=1484236828	localtime=Jan 12 08:00:28	
	GOOD	----	verify.PASS	timestamp=1484236828	localtime=Jan 12 08:00:28	
	START	provision_AutoUpdate	provision_AutoUpdate	timestamp=1484236828	localtime=Jan 12 08:00:28	
		START	----	----	timestamp=1484238517	localtime=Jan 12 08:28:37	
			GOOD	----	sysinfo.before	timestamp=1484238520	localtime=Jan 12 08:28:40	
		END GOOD	----	----	timestamp=1484238520	localtime=Jan 12 08:28:40	
		FAIL	provision_AutoUpdate	provision_AutoUpdate	timestamp=1484242229	localtime=Jan 12 09:30:29	Unhandled DevServerException: CrOS auto-update failed for host chromeos6-row2-rack14-host8:  Timeout occurred- waited 1800 seconds.. The CrOS auto-update process is timed out, thus will be terminated
  Traceback (most recent call last):
    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/provision_AutoUpdate/provision_AutoUpdate.py", line 111, in run_once
      force_full_update=force)
    File "/usr/local/autotest/server/afe_utils.py", line 270, in machine_install_and_update_labels
      *args, **dargs)
    File "/usr/local/autotest/server/hosts/cros_host.py", line 748, in machine_install_by_devserver
      full_update=force_full_update)
    File "/usr/local/autotest/client/common_lib/cros/dev_server.py", line 1947, in auto_update
      raise DevServerException(error_msg % (host_name, error_list[0]))
  DevServerException: CrOS auto-update failed for host chromeos6-row2-rack14-host8:  Timeout occurred- waited 1800 seconds.. The CrOS auto-update process is timed out, thus will be terminated
	END FAIL	provision_AutoUpdate	provision_AutoUpdate	timestamp=1484242230	localtime=Jan 12 09:30:30	
END FAIL	----	provision	timestamp=1484242230	localtime=Jan 12 09:30:30	
INFO	----	----	timestamp=1484242230	job_abort_reason=	localtime=Jan 12 09:30:30