[GHC] #7811: intermittent 'unexpected' results of test ghcpkg01

[GHC]

#7811: intermittent 'unexpected' results of test ghcpkg01
-----------------------------+----------------------------------------------
Reporter:  nfrisby           |          Owner:                  
    Type:  bug               |         Status:  new             
Priority:  normal            |      Component:  ghc-pkg         
 Version:  7.6.2             |       Keywords:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown      |      Blockedby:                  
Blocking:                    |        Related:                  
-----------------------------+----------------------------------------------
 I get this unexpected error from ghcpkg01

 {{{
 Actual stderr output differs from expected:
 ...
 +WARNING: cache is out of date: localXXX/package.cache
 +  use 'ghc-pkg recache' to fix.
 }}}

 when running the full suite, but cannot reproduce it when running just
 that test; it passes when run individually.

 (This was also reported in #5503.)

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7811>
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