tn23, build 207, Failure

[Builder]

tn23, build 207

Build failed
Details: http://darcs.haskell.org/ghcBuilder/builders/tn23/207.html

darcs checkout       | Success
create mk/build.mk   | Success
get subrepos         | Success
repo versions        | Success
setting version date | Success
booting              | Success
configuring          | Success
compiling            | Failure: Just (ExitFailure 2)

Build failed
Details: http://darcs.haskell.org/ghcBuilder/builders/tn23/207.html

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"/Library/Frameworks/GHC.framework/Versions/610/us [...] Interact.lhs -o compiler/stage1/build/TcInteract.o
"/Library/Frameworks/GHC.framework/Versions/610/us [...] Simplify.lhs -o compiler/stage1/build/TcSimplify.o
"/Library/Frameworks/GHC.framework/Versions/610/us [...] eck/TcBinds.lhs -o compiler/stage1/build/TcBinds.o
"/Library/Frameworks/GHC.framework/Versions/610/us [...] ename/RnExpr.lhs -o compiler/stage1/build/RnExpr.o
"/Library/Frameworks/GHC.framework/Versions/610/us [...] ClassDcl.lhs -o compiler/stage1/build/TcClassDcl.o
"/Library/Frameworks/GHC.framework/Versions/610/us [...] TcTyDecls.lhs -o compiler/stage1/build/TcTyDecls.o
"/Library/Frameworks/GHC.framework/Versions/610/us [...] sDecls.lhs -o compiler/stage1/build/TcTyClsDecls.o
"/Library/Frameworks/GHC.framework/Versions/610/us [...] GenDeriv.lhs -o compiler/stage1/build/TcGenDeriv.o
"/Library/Frameworks/GHC.framework/Versions/610/usr/bin/ghc"   -H32m -O  -package-conf libraries/bootstrapping.conf  -package-name ghc-7.1 -hide-all-packages -i -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/stage1/build -icompiler/stage1/build/autogen -Icompiler/stage1/build -Icompiler/stage1/build/autogen -Icompiler/stage1 -Icompiler/../libraries/base/cbits -Icompil [...] ackage array-0.2.0.0 -package base-4.1.0.0 -package bin-package-db-0.0.0.0 -package bytestring-0.9.1.4 -package containers-0.2.0.1 -package directory-1.0.0.3 -package filepath-1.1.0.2 -package hpc-0.5.0.6 -package old-time-1.0.0.2 -package process-1.0.1.1 -package unix-2.3.2.0  -Wall -fno-warn-name-shadowing -fno-warn-orphans -XCPP -XMagicHash -XUnboxedTuples -XPatternGuards -XForeignFunctionInterface -XEmptyDataDecls -XTypeSynonymInstances -XMultiParamTypeClasses -XFlexibleInstances -XRank2Types -XScopedTypeVariables -XDeriveDataTypeable -#include cutils.h -DSTAGE=1 -no-user-package-conf      -odir compiler/stage1/build -hidir compiler/stage1/build -stubdir compiler/stage1/build -hisuf hi -osuf  o -hcsuf hc -c compiler/typecheck/TcDeriv.lhs -o compiler/stage1/build/TcDeriv.o
"/Library/Frameworks/GHC.framework/Versions/610/usr/bin/ghc"   -H32m -O  -package-conf libraries/bootstrapping.conf  -package-name ghc-7.1 -hide-all-packages -i -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/stage1/build -icompiler/stage1/build/autogen -Icompiler/stage1/build -Icompiler/stage1/build/autogen -Icompiler/stage1 -Icompiler/../libraries/base/cbits -Icompiler/../libraries/base/include -Icompiler/. -Icompiler/parser -Icompiler/utils    -optP-include -optPcompiler/stage1/build/autogen/cabal_macros.h -package Cabal-1.11.0 -package array-0.2.0.0 -package base-4.1.0.0 -package bin-package-db-0.0.0.0 -package bytestring-0.9.1.4 -package containers-0.2.0.1 -package directory-1.0.0.3 -package filepath-1.1.0.2 -package hpc-0.5.0.6 -package old-time-1.0.0.2 -package process-1.0.1.1 -package unix-2.3.2.0  -Wall -fno-warn-name-shadowing -fno-warn-orphans -XCPP -XMagicHash -XUnboxedTuples -XPatternGuards -XForeignFunctionInterface -XEmptyDataDecls -XTypeSynonymInstances -XMultiParamTypeClasses -XFlexibleInstances -XRank2Types -XScopedTypeVariables -XDeriveDataTypeable -#include cutils.h -DSTAGE=1 -no-user-package-conf      -odir compiler/stage1/build -hidir compiler/stage1/build -stubdir compiler/stage1/build -hisuf hi -osuf  o -hcsuf hc -c compiler/typecheck/TcInstDcls.lhs -o compiler/stage1/build/TcInstDcls.o

compiler/typecheck/TcInstDcls.lhs:714:28:
    Couldn't match expected type `[TyVar]'
           against inferred type `EvVar'
    In the first argument of `simplifySuperClass', namely `self_dict'
    In a stmt of a 'do' expression: simplifySuperClass self_dict wanted
    In the expression:
        do (ev_binds, wanted, sc_dict) <- newImplication
                                            InstSkol tyvars dicts
                                        $ emitWanted ScOrigin sc_pred
           simplifySuperClass self_dict wanted
           uniq <- newUnique
           let sc_op_ty = mkForAllTys tyvars
                        $ mkPiTypes dicts (varType sc_dict)
               sc_op_name = mkDerivedInternalName
                              mkClassOpAuxOcc uniq (getName sc_sel)
               ....
           ....
make[1]: *** [compiler/stage1/build/TcInstDcls.o] Error 1
make: *** [all] Error 2