[Buildbot] #3048: ConnectionError when the Docker host is not available

[Buildbot trac]

#3048: ConnectionError when the Docker host is not available
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Reporter:  Ben                    |       Owner:
    Type:  defect                 |      Status:  new
Priority:  major                  |   Milestone:  undecided
 Version:  master                 |  Resolution:
Keywords:  docker, slave, latent  |
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Comment (by Ben):

 I tried catching the {{{request.session.ConnectionError}}}, and raising a
 {{{interfaces.LatentBuildSlaveFailedToSubstantiate}}} instead ...

 It doesn't get better, the traceback also get reported.

 @djmitche, any idea how to indicate to the master that the slave failed to
 substantiate ?

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Ticket URL: <http://trac.buildbot.net/ticket/3048#comment:1>
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