Labs, would you please reboot build127-b1? It never generated output which is what is causing the steps to error.

Rebooted.

The following revision refers to this bug:
  https://chromium.googlesource.com/infra/luci/luci-py.git/+/83b5f05cd6bf6a5f449182125a393ffd2e03493d

commit 83b5f05cd6bf6a5f449182125a393ffd2e03493d
Author: Marc-Antoine Ruel <maruel@chromium.org>
Date: Fri Nov 03 18:40:15 2017

swarming.py: fix regression in adaf484266, improve decorated ouput

The client crashes on task without output, e.g. expired.

Changes the decorated output in case of failures to be informative.
Tailors based on the kind of task result. For example for an EXPIRED task,
it looks like:

+------------------------------------------------------------------------+
| End of shard 0                                                         |
|  Pending: 36052.1s  EXPIRED (lack of capacity)                         |
+------------------------------------------------------------------------+

In particular, call out "lack of capacity" to make this extra clear to
users.

For a BOT_DIED;

+------------------------------------------------------------------------+
| End of shard 0                                                         |
|  Pending: 0.4s  Duration: N/A  Bot: vm447-m4  Exit: N/A  BOT_DIED      |
+------------------------------------------------------------------------+

etc.

R=jchinlee@chromium.org
Bug:  781281 
Change-Id: Ie813ef3ce895880223322b4cfb80236d800666b3
Reviewed-on: https://chromium-review.googlesource.com/753846
Reviewed-by: Jao-ke Chin-Lee <jchinlee@chromium.org>
Commit-Queue: Marc-Antoine Ruel <maruel@chromium.org>

[modify] https://crrev.com/83b5f05cd6bf6a5f449182125a393ffd2e03493d/client/swarming.py

I assume this is done?

Thanks Elliott for rebooting the bot! Seems like rebooting the bot didn't address the exceptions, however... I'm not sure the root cause, marking as available so the current trooper can take a look.

i, trooper, cannot ssh to the bot, so i cannot analyze swarming bot logs to determine why the bot died. Labs, please reboot again.

FTR here are two most recent tasks that killed the bot
https://chromium-swarm.appspot.com/task?id=39aca009fe7f2010
https://chromium-swarm.appspot.com/task?id=39b2c99d6bcbbc10

The slave has been locking up very regularly over the last few weeks.

I'm going to re-image it.

It's back up and in swarming.