[GHC] #16224: CPUTime001 is fragile

[GHC]

#16224: CPUTime001 is fragile
-------------------------------------+-------------------------------------
           Reporter:  bgamari        |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.6.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 I have seen CPUTime001 fail spuriously on several occasions. In
 [[https://gitlab.haskell.org/ghc/ghc/-/jobs/15989|one such occasion]]:
 {{{#!diff
 --- libraries/base/tests/CPUTime001.run/CPUTime001.stdout.normalised
 2019-01-23 18:53:32.601027719 +0000
 +++ libraries/base/tests/CPUTime001.run/CPUTime001.run.stdout.normalised
 2019-01-23 18:53:32.601027719 +0000
 @@ -1,4 +1,4 @@
  1028457
  1664079
  2692537
 -(True,True)
 +(False,True)
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16224>
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