[GHC] #14453: CircleCI builds on Linux spuriously fail

[GHC]

#14453: CircleCI builds on Linux spuriously fail
-------------------------------------+-------------------------------------
           Reporter:  bgamari        |             Owner:  bgamari
               Type:  bug            |            Status:  new
           Priority:  high           |         Milestone:  8.4.1
          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:
-------------------------------------+-------------------------------------
 See, for instance,
 [[https://circleci.com/api/v1.1/project/github/ghc/ghc/256/output/107/0?file=true|build
 #256]]. This build seemed to be chugging along quite nicely when at minute
 30 it failed with,
 {{{
 "inplace/bin/ghc-stage1" -hisuf p_hi -osuf  p_o -hcsuf p_hc -static -prof
 -eventlog  -H32m -O -Wall   -Iincludes -Iincludes/dist -Iincludes/dist-
 derivedconstants/header -Iincludes/dist-ghcconstants/header   -this-unit-
 id ghc-8.3 -hide-all-packages -i -icompiler/backpack -icompiler/basicTypes
 -icompiler/cmm -icompiler/codeGen -icompiler/coreSyn -icompiler/deSugar
 -icompiler/ghci -icompiler/hsSyn -icompiler/iface -icompiler/llvmGen
 -icompiler/main -icompiler/nativeGen -icompiler/parser -icompiler/prelude
 -icompiler/profiling -icompiler/rename -icompiler/simplCore
 -icompiler/simplStg -icompiler/specialise -icompiler/stgSyn
 -icompiler/stranal -icompiler/typecheck -icompiler/types -icompiler/utils
 -icompiler/vectorise -icompiler/stage2/build -Icompiler/stage2/build
 -icompiler/stage2/build/./autogen -Icompiler/stage2/build/./autogen
 -Icompiler/. -Icompiler/parser -Icompiler/utils
 -Icompiler/../rts/dist/build -Icompiler/stage2   -optP-DGHCI -optP-include
 -optPcompiler/stage2/build/./autogen/cabal_macros.h -package-id
 base-4.11.0.0 -package-id deepseq-1.4.3.0 -package-id directory-1.3.1.5
 -package-id process-1.6.1.0 -package-id bytestring-0.10.8.2 -package-id
 binary-0.8.5.1 -package-id time-1.8.0.2 -package-id containers-0.5.10.2
 -package-id array-0.5.2.0 -package-id filepath-1.4.1.2 -package-id
 template-haskell-2.13.0.0 -package-id hpc-0.6.0.3 -package-id
 transformers-0.5.4.0 -package-id ghc-boot-8.3 -package-id ghc-boot-th-8.3
 -package-id ghci-8.3 -package-id unix-2.7.2.2 -package-id terminfo-0.4.1.0
 -Wall -Wno-name-shadowing -Wnoncanonical-monad-instances -Wnoncanonical-
 monadfail-instances -Wnoncanonical-monoid-instances -this-unit-id ghc
 -XHaskell2010 -XNoImplicitPrelude -optc-DTHREADED_RTS
 -DGHCI_TABLES_NEXT_TO_CODE -DSTAGE=2 -Rghc-timing -O2 -Wcpp-undef  -no-
 user-package-db -rtsopts       -Wnoncanonical-monad-instances  -odir
 compiler/stage2/build -hidir compiler/stage2/build -stubdir
 compiler/stage2/build    -c compiler/hsSyn/HsDecls.hs -o
 compiler/stage2/build/HsDecls.p_o -dyno
 compiler/stage2/build/HsDecls.dyn_o
 ...
 compiler/ghc.mk:447: recipe for target 'compiler/stage2/build/HsDecls.p_o'
 failed
 make[1]: *** [compiler/stage2/build/HsDecls.p_o] Killed
 }}}

 Why was it killed? No one knows. I suspect it ran out of memory since it
 appears that there was at least seven other GHC processes running
 concurrently on a machine with only 4 gigabytes of memory. However, seeing
 as there's no way to tell whether the OOM killer was invoked it's hard to
 know for certain.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14453>
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