[GHC] #16201: ghci063 failing on Darwin

[GHC]

#16201: ghci063 failing on Darwin
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        Reporter:  bgamari       |                Owner:  (none)
            Type:  bug           |               Status:  new
        Priority:  highest       |            Milestone:  8.8.1
       Component:  Compiler      |              Version:  8.6.3
      Resolution:                |             Keywords:  ci-breakage
Operating System:  MacOS X       |         Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:                |  Differential Rev(s):
       Wiki Page:                |
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Comment (by int-index):

 I have confirmed the non-deterministic nature of this locally. Out of 6
 repeated runs there was 1 unexpected pass.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16201#comment:3>
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