Ultima AU fails on ToT (M56)

10/26 07:49:37.681 ERROR|           control:0071| provision_AutoUpdate failed
Traceback (most recent call last):
  File "/usr/local/autotest/server/server_job.py", line 870, in _run_group
    result = function(*args, **dargs)
  File "/usr/local/autotest/server/server_job.py", line 845, in group_func
    self.record(e.exit_status, subdir, testname, str(e))
  File "/usr/local/autotest/client/common_lib/base_job.py", line 1199, in record
    optional_fields)
  File "/usr/local/autotest/client/common_lib/base_job.py", line 468, in __init__
    raise ValueError('Invalid character in message %r' % self.message)
ValueError: Invalid character in message 'Unhandled DevServerException: CrOS auto-update failed for host chromeos4-row11-rack4-host17: SSHConnectionError: Connection to 100.115.202.49 timed out while waiting to read\r'
Traceback (most recent call last):
  File "/usr/local/autotest/results/hosts/chromeos4-row11-rack4-host17/274920-provision/20162610060205/control.srv", line 47, in provision_machine
    provision.Provision)
  File "/usr/local/autotest/server/cros/provision.py", line 318, in run_special_task_actions
    success = action_item.execute(job=job, host=host, value=value)
  File "/usr/local/autotest/server/cros/provision_actionables.py", line 56, in execute
    return job.run_test(self.test, host=host, *args, **kwargs)
  File "/usr/local/autotest/server/server_job.py", line 854, in run_test
    result, exc_info = self._run_group(testname, subdir, group_func)
  File "/usr/local/autotest/server/server_job.py", line 878, in _run_group
    raise error.JobError(name + ' failed\n' + traceback.format_exc())
JobError: provision_AutoUpdate failed
Traceback (most recent call last):
  File "/usr/local/autotest/server/server_job.py", line 870, in _run_group
    result = function(*args, **dargs)
  File "/usr/local/autotest/server/server_job.py", line 845, in group_func
    self.record(e.exit_status, subdir, testname, str(e))
  File "/usr/local/autotest/client/common_lib/base_job.py", line 1199, in record
    optional_fields)
  File "/usr/local/autotest/client/common_lib/base_job.py", line 468, in __init__
    raise ValueError('Invalid character in message %r' % self.message)
ValueError: Invalid character in message 'Unhandled DevServerException: CrOS auto-update failed for host chromeos4-row11-rack4-host17: SSHConnectionError: Connection to 100.115.202.49 timed out while waiting to read\r'


Link to logs:
https://00e9e64bac440f7dec3cebf93d034acbd09ce843288447fb9e-apidata.googleusercontent.com/download/storage/v1/b/chromeos-autotest-results/o/82713598-chromeos-test%2Fchromeos4-row11-rack4-host17%2Fdebug%2Fautoserv.DEBUG?qk=AD5uMEvwgE5yYgG6t3G7N3phDazuq4QLu11HClxJ5Pkq_3_tNCe8-Zg-_j6tWwKyPkZybx70mU4PUx5j_vOc87uUV4an2tTOk-8RIFR-HfjDpdlsAuw4QQzUmEGNKTNA5VIOA4Hsr9j5vbJv3CLU-hjtqmGugE-HUhbXkNgUAPgnWlgjOz4qYybPYrcjMwP6pOXi7fXMZ6thxQH7CX_Vm5-29-EIpo_GaQxhjCs8D7L_nMGw7lj7U_6W2Uevm3v0FNNYlgM5rPXNmW2EgSONNsVfuGYdvEsh7SxyKTfi6rnJLFymqj5Uwt27qvxjg1GkRQaK8eVuGrnnJj5yHxbgejY382ORANgp-x0Gsht5PgIa3NSawroQJ24klNM-R56rYkvrNOHTCoE4f0Mz7Fcg0q8lez8-6q1ZuEz0kXzDlOxhFaCLUAwr0_Y_rSTOrXsw1R9pAww77tzMXPYSDU8BivhlJzr8-QIlwjocwo-aAANdfnS3UXBDdcq-4raVmFLSBoksLanuGwtfJhcK3gZ7Rwpx7l0o8Wq3ozaRQWR_ZA9aqCZpK1Sdvt6z68UacEfvkYK1J9cBWqhgtbg_odZZE5JUwqn4Vc700WzPT_hL5SwNLEvbTROSiAgGAzPHgz1OWMZV2A60lxHWwamOGBbd-DAnT8ZTe1jzgd1UI58rUgv0BfKkJMsjx_pTGBCbJOVuxka6I5IYHgPcECNYmcnKSUYE2zedu5DqTE0GH0bUCgjPehtqut6bZ9RuNOMHPxSeSmc8i-iX-NaVJtqQzhUutPLd4T8dQeJcQslo7rljciwbB6rN6Q_Z32OvbG9ULVoLGZzOGjcn5PHukFNUHQzSgQM4O9n-t3ISU97C1VOfxSDPtSHnadwSVYpDL-TvSXG8MWvZW6U7UuJL


Link to build:
https://uberchromegw.corp.google.com/i/chromeos/builders/ultima-release/builds/520