Resolving dependencies...
Starting     integer-logarithms-1.0.3.1
Starting     parser-combinators-1.3.0
Starting     hashable-1.3.1.0
Starting     basement-0.0.11
Building     parser-combinators-1.3.0
Building     integer-logarithms-1.0.3.1
Building     hashable-1.3.1.0
Building     basement-0.0.11
Completed    integer-logarithms-1.0.3.1
Starting     primitive-0.7.1.0
Building     primitive-0.7.1.0
Completed    parser-combinators-1.3.0
Completed    hashable-1.3.1.0
Starting     case-insensitive-1.2.1.0
Building     case-insensitive-1.2.1.0
Completed    case-insensitive-1.2.1.0
Completed    primitive-0.7.1.0
Starting     scientific-0.3.6.2
Starting     vector-0.12.2.0
Building     scientific-0.3.6.2
Building     vector-0.12.2.0
Completed    scientific-0.3.6.2
Starting     megaparsec-9.0.1
Starting     attoparsec-0.13.2.5
Building     megaparsec-9.0.1
Building     attoparsec-0.13.2.5
Completed    attoparsec-0.13.2.5
Completed    megaparsec-9.0.1
Completed    basement-0.0.11
Completed    vector-0.12.2.0
Starting     gauge-0.2.5
Building     gauge-0.2.5
Completed    gauge-0.2.5
Starting     flatparse-0.1.0.0
Building     flatparse-0.1.0.0
Failed to install flatparse-0.1.0.0
Build log ( /home/builder/.cabal/logs/ghc-8.10.2/flatparse-0.1.0.0-XJIIlqksqgFNnORUJWKlN.log ):
cabal: Entering directory '/tmp/cabal-tmp-25987/flatparse-0.1.0.0'
Configuring flatparse-0.1.0.0...
Preprocessing executable 'test' for flatparse-0.1.0.0..
Building executable 'test' for flatparse-0.1.0.0..
[1 of 2] Compiling Main             ( test/Test.hs, dist/build/test/test-tmp/Main.o, dist/build/test/test-tmp/Main.dyn_o )
[2 of 2] Compiling Paths_flatparse  ( dist/build/test/autogen/Paths_flatparse.hs, dist/build/test/test-tmp/Paths_flatparse.o, dist/build/test/test-tmp/Paths_flatparse.dyn_o )
Linking dist/build/test/test ...
Preprocessing library for flatparse-0.1.0.0..
Building library for flatparse-0.1.0.0..
[1 of 5] Compiling FlatParse.Basic  ( src/FlatParse/Basic.hs, dist/build/FlatParse/Basic.o, dist/build/FlatParse/Basic.dyn_o )
[2 of 5] Compiling FlatParse.Examples.BasicLambda.Lexer ( src/FlatParse/Examples/BasicLambda/Lexer.hs, dist/build/FlatParse/Examples/BasicLambda/Lexer.o, dist/build/FlatParse/Examples/BasicLambda/Lexer.dyn_o )
[3 of 5] Compiling FlatParse.Examples.BasicLambda.Parser ( src/FlatParse/Examples/BasicLambda/Parser.hs, dist/build/FlatParse/Examples/BasicLambda/Parser.o, dist/build/FlatParse/Examples/BasicLambda/Parser.dyn_o )
[4 of 5] Compiling FlatParse.Stateful ( src/FlatParse/Stateful.hs, dist/build/FlatParse/Stateful.o, dist/build/FlatParse/Stateful.dyn_o )
[5 of 5] Compiling Paths_flatparse  ( dist/build/autogen/Paths_flatparse.hs, dist/build/Paths_flatparse.o, dist/build/Paths_flatparse.dyn_o )
Preprocessing executable 'bench' for flatparse-0.1.0.0..
Building executable 'bench' for flatparse-0.1.0.0..

<no location info>: error:
    Warning: Couldn't figure out LLVM version!
             Make sure you have installed LLVM 9
[1 of 7] Compiling Attoparsec       ( bench/Attoparsec.hs, dist/build/bench/bench-tmp/Attoparsec.o, dist/build/bench/bench-tmp/Attoparsec.dyn_o )

<no location info>: error:
    Warning: Couldn't figure out LLVM version!
             Make sure you have installed LLVM 9
ghc: could not execute: opt
cabal: Leaving directory '/tmp/cabal-tmp-25987/flatparse-0.1.0.0'
cabal: Error: some packages failed to install:
flatparse-0.1.0.0-XJIIlqksqgFNnORUJWKlN failed during the building phase. The
exception was:
ExitFailure 1