See https://pantheon.corp.google.com/storage/browser/chromeos-autotest-results/172501441-chromeos-test/chromeos4-row3-rack12-host19/debug


01/26 00:39:31.583 WARNI|             retry:0183| Retrying in 0.653391 seconds...
01/26 00:39:32.656 WARNI|             retry:0228| <class 'socket.error'>([Errno 111] Connection refused)
01/26 00:39:34.474 WARNI|             retry:0183| Retrying in 0.833833 seconds...
01/26 00:39:35.312 WARNI|             retry:0228| <class 'socket.error'>([Errno 111] Connection refused)
01/26 00:39:35.313 WARNI|             retry:0183| Retrying in 1.426522 seconds...
01/26 00:39:36.775 WARNI|             retry:0228| <class 'socket.error'>([Errno 111] Connection refused)
01/26 00:39:42.563 ERROR|rpc_server_tracker:0201| Failed to start XMLRPC server.
01/26 00:39:43.573 DEBUG|      abstract_ssh:0957| Terminated tunnel, pid 225853
01/26 00:39:43.579 ERROR|            repair:0354| Failed: servod service is taking calls