[Buildbot] #3269: Git step interruption/timeout leaves stale lockfiles around

[Buildbot trac]

#3269: Git step interruption/timeout leaves stale lockfiles around
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Reporter:  vlovich  |      Owner:
    Type:  defect   |     Status:  new
Priority:  major    |  Milestone:  undecided
 Version:  0.8.10   |   Keywords:
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 We're hitting this & https://github.com/rust-lang/rust/issues/7995 makes
 the observation that this is almost certainly the result of KILL'ing the
 step instead of SIGTERM

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Ticket URL: <http://trac.buildbot.net/ticket/3269>
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