[GHC] #14600: Work out why Hadrian builds routinely fail

[GHC]

#14600: Work out why Hadrian builds routinely fail
-------------------------------------+-------------------------------------
           Reporter:  bgamari        |             Owner:  bgamari
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Continuous     |           Version:  8.2.1
  Integration                        |
           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:
-------------------------------------+-------------------------------------
 Currently Hadrian builds inexplicably and non-deterministically fail on
 CircleCI. They fail with,
 {{{
 | Copy file (untracked): _build/stage1/libffi/inst/lib/libffi.a =>
 _build/stage1/rts/libCffi_l.a
 | Copy file (untracked): _build/stage1/libffi/inst/lib/libffi.a =>
 _build/stage1/rts/libCffi_debug.a
 | Copy file (untracked): _build/stage1/libffi/inst/lib/libffi.a =>
 _build/stage1/rts/libCffi_thr.a
 | Copy file (untracked): _build/stage1/libffi/inst/lib/libffi.a =>
 _build/stage1/rts/libCffi_thr_debug.a
 | Copy file (untracked): _build/stage1/libffi/inst/lib/libffi.a =>
 _build/stage1/rts/libCffi_thr_l.a
 | Copy file (untracked): _build/stage1/libffi/inst/lib/libffi.a =>
 _build/stage1/rts/libCffi_thr_p.a
 | Copy file (untracked): _build/stage1/libffi/inst/lib/libffi.a =>
 _build/stage1/rts/libCffidebug_-ghc8.5.20171218.so
 | Copy file (untracked): _build/stage1/libffi/inst/lib/libffi.a =>
 _build/stage1/rts/libCffithr_-ghc8.5.20171218.so
 | Copy file (untracked): _build/stage1/libffi/inst/lib/libffi.a =>
 _build/stage1/rts/libCffithr_debug_-ghc8.5.20171218.so
 | Copy file (untracked): _build/stage1/libffi/inst/lib/libffi.a =>
 _build/stage1/rts/libCffil_-ghc8.5.20171218.so
 | Copy file (untracked): _build/stage1/libffi/inst/lib/libffi.a =>
 _build/stage1/rts/libCffithr_l_-ghc8.5.20171218.so
 | Successfully built custom library 'libffi'
 Too long with no output (exceeded 10m0s)
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14600>
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