[Buildbot] #3277: Builds that contain commands with SlaveLocks fail with exceptions due to inability to coerce SlaveLock to renderable

[Buildbot trac]

#3277: Builds that contain commands with SlaveLocks fail with exceptions due to
inability to coerce SlaveLock to renderable
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Reporter:  cody       |       Owner:
    Type:  undecided  |      Status:  new
Priority:  major      |   Milestone:  0.8.x
 Version:  master     |  Resolution:
Keywords:             |
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Comment (by vlovich):

 (If this isn't about a custom 0.8.x branch then I'm sorry - the logs &
 milestone both indicate 0.8.x)

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Ticket URL: <http://trac.buildbot.net/ticket/3277#comment:2>
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