有台主機已經連續七八個小時遇到:

[01:39:08] + Attempting to send results [July 1 01:39:08 UTC]
[01:39:09] + No appropriate work server was available; will try again in a bit.
[01:39:09] + Couldn't get work instructions.
[01:39:09] - Attempt #1 to get work failed, and no other work to do.
Waiting before retry.

...