[GHC] #14890: Make Linux slow validate green

[GHC]

#14890: Make Linux slow validate green
-------------------------------------+-------------------------------------
        Reporter:  bgamari           |                Owner:  alpmestan
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  D4546
       Wiki Page:                    |
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Changes (by alpmestan):

 * differential:   => D4546


Comment:

 First batch of test expectation changes at
 [https://phabricator.haskell.org/D4546 D4546].

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14890#comment:4>
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