[GHC] #10950: Sphinx "RecursionError: maximum recursion depth exceeded while pickling an object"

[GHC]

#10950: Sphinx "RecursionError: maximum recursion depth exceeded while pickling an
object"
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        Reporter:  ezyang            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Documentation     |              Version:  7.11
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"fa5eabec43a71546afba6dec7508ae5afb23b805/ghc" fa5eabe/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="fa5eabec43a71546afba6dec7508ae5afb23b805"
 sphinx: Don't share doctrees between targets

 Sphinx may trip over itself when multiple instances are run in parallel.

 Fixes #10950.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10950#comment:1>
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