[GHC] #15239: Is there an issue with Haskell GHC 8.4.3 on Travis?

[GHC]

#15239: Is there an issue with Haskell GHC 8.4.3 on Travis?
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        Reporter:  Orome             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Build System      |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Installing GHC    |  Unknown/Multiple
  failed                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by hvr):

 I haven't experienced any issues w/ GHC 8.4.3 on Travis; see e.g. https
 ://travis-ci.org/haskell-hvr/HsYAML/builds/388502153

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15239#comment:1>
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