[GHC] #12898: Upgrade Stack failed

[GHC]

#12898: Upgrade Stack failed
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        Reporter:  Bugger    |                Owner:
            Type:  bug       |               Status:  new
        Priority:  normal    |            Milestone:
       Component:  Compiler  |              Version:  8.0.1
      Resolution:            |             Keywords:
Operating System:  MacOS X   |         Architecture:  Unknown/Multiple
 Type of failure:  Other     |            Test Case:
      Blocked By:            |             Blocking:
 Related Tickets:            |  Differential Rev(s):
       Wiki Page:            |
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Changes (by Bugger):

 * Attachment "Terminal Saved Output" added.

 output from shell

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12898>
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