[GHC] #15951: Hadrian test doesn't show testsuite output by default

[GHC]

#15951: Hadrian test doesn't show testsuite output by default
-------------------------------------+-------------------------------------
           Reporter:  bgamari        |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.8.1
          Component:  Build System   |           Version:  8.6.2
  (Hadrian)                          |
           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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 When running `hadrian test` the user sees no indication that the build
 system is actually doing anything beyond the furious whirring of their CPU
 fan. Once the testsuite finishes Hadrian kindly informs the user that the
 testsuite passed or failed, but provides no additional feedback on what
 failed or where the output can be found.

 We should just print all testsuite output to stdout, as the `make` build
 system does.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15951>
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