https://pantheon.corp.google.com/storage/browser/chromeos-autotest-results/100306762-chromeos-test/chromeos4-row4-rack6-host1/debug/

file autotest.DEBUG:

02/09 06:40:11.310 WARNI|        base_utils:0912| run process timeout (240) fired on: /usr/bin/ssh -a -x    -o ControlPath=/tmp/_autotmp_HbCuJlssh-master/socket -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o BatchMode=yes -o ConnectTimeout=30 -o ServerAliveInterval=900 -o ServerAliveCountMax=3 -o ConnectionAttempts=4 -o Protocol=2 -l root -p 22 chromeos4-row4-rack6-host1 "export LIBC_FATAL_STDERR_=1; if type \"logger\" > /dev/null 2>&1; then logger -tag \"autotest\" \"server[stack::wait_up|is_up|ssh_ping] -> ssh_run(true)\";fi; true"
02/09 06:40:12.314 ERROR|     setup_modules:0085| Exception occurred formatting message: 'retrying ssh command after ' using args ('timeout',)
...
02/09 06:40:12.333 ERROR|         traceback:0013|   File "/usr/local/autotest/server/hosts/abstract_ssh.py", line 584, in wait_up
02/09 06:40:12.333 ERROR|         traceback:0013|     connect_timeout=20):
02/09 06:40:12.333 ERROR|         traceback:0013|   File "/usr/local/autotest/server/hosts/abstract_ssh.py", line 557, in is_up
02/09 06:40:12.334 ERROR|         traceback:0013|     base_cmd=base_cmd)
02/09 06:40:12.334 ERROR|         traceback:0013|   File "/usr/local/autotest/server/hosts/abstract_ssh.py", line 531, in ssh_ping
02/09 06:40:12.334 ERROR|         traceback:0013|     ssh_failure_retry_ok=True)
02/09 06:40:12.334 ERROR|         traceback:0013|   File "/usr/local/autotest/server/hosts/ssh_host.py", line 296, in run
02/09 06:40:12.335 ERROR|         traceback:0013|     ssh_failure_retry_ok)
02/09 06:40:12.335 ERROR|         traceback:0013|   File "/usr/local/autotest/server/hosts/ssh_host.py", line 213, in _run
02/09 06:40:12.335 ERROR|         traceback:0013|     failure_name)
02/09 06:40:12.335 ERROR|         traceback:0013|   File "/usr/lib/python2.7/logging/__init__.py", line 1622, in debug
02/09 06:40:12.336 ERROR|         traceback:0013|     root.debug(msg, *args, **kwargs)