[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2277: upgrade buildbot to 0.8.9

[Tahoe-LAFS]

#2277: upgrade buildbot to 0.8.9
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     Reporter:  zooko               |      Owner:
         Type:  enhancement         |     Status:  new
     Priority:  normal              |  Milestone:  undecided
    Component:  dev-infrastructure  |    Version:  1.10.0
   Resolution:                      |   Keywords:  buildbot
Launchpad Bug:                      |
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Comment (by daira):

 AFAICS the removal of old-style buildstep support will happen "after 0.9"
 (see [http://docs.buildbot.net/0.8.9/manual/new-style-steps.html]), and
 there don't seem to be any documented incompatible changes in 0.8.9.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2277#comment:1>
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