Windows slaves freezing on downloadFile step

Elliot Saba staticfloat at
Tue Oct 6 00:05:06 UTC 2015

All I see is the following:

2015-10-06 00:02:26+0000 [Broker,28,] Unhandled Error
        Traceback (most recent call last):
        Failure: twisted.spread.pb.PBConnectionLost: [Failure instance:
Traceback (failure with no frames): <class
'twisted.internet.error.ConnectionLost'>: Connection to the other side was
lost in a non-clean fashion.

On Sun, Oct 4, 2015 at 6:54 AM, Dustin J. Mitchell <dustin at>

> Are you seeing any tracebacks in the master's twistd.log?
> Dustin
> On Wed, Sep 30, 2015 at 1:35 PM, Elliot Saba <staticfloat at>
> wrote:
>> Hello all, I have some Windows Server buildslaves that are freezing on a
>> master -> slave file transfer step.  The file itself is only a few KB, so I
>> know it's not a network speed issue, and other steps (including slave ->
>> master uploads) have been successful.
>> You can see the buildmaster webpage here
>> <>, but that doesn't
>> show too much information, except that (1) the slaves continually timeout
>> and restart themselves, and (2) the webpage "interrupt" button doesn't seem
>> to work, so the buildslaves just continually restart themselves with no
>> apparent way to force them to stop.  twistd.log on one of the slaves shows this
>> log <>, which I
>> think shows a timeout on the slave side, thinking that the buildmaster is
>> frozen.  My question is:
>> (1) What's the proper way to clear the queue when the "interrupt" button
>> doesn't work?  So far, I'm getting around this by stopping the build
>> master, then starting it back up, and canceling the jobs from the "pending"
>> queue before the buildslaves can reconnect.
>> (2) Why would this download step be freezing?  I've tried turning off the
>> windows firewall and that doesn't seem to be the problem.
>> If there's more information I need to give, please let me know!
>> -E
>> _______________________________________________
>> users mailing list
>> users at
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