Resolving dependencies...
Configuring mtl-2.2.1...
Configuring primitive-0.6.2.0...
Building mtl-2.2.1...
Building primitive-0.6.2.0...
Configuring random-1.1...
Installed mtl-2.2.1
Building random-1.1...
Installed primitive-0.6.2.0
Installed random-1.1
Configuring tf-random-0.5...
Building tf-random-0.5...
Installed tf-random-0.5
Configuring QuickCheck-2.9.2...
Building QuickCheck-2.9.2...
Installed QuickCheck-2.9.2
Configuring non-negative-0.0.1...
Building non-negative-0.0.1...
Failed to install non-negative-0.0.1
Build log ( /home/builder/.cabal/logs/non-negative-0.0.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-15370/non-negative-0.0.1'
Configuring non-negative-0.0.1...
Building non-negative-0.0.1...
Preprocessing library non-negative-0.0.1...
[1 of 4] Compiling Numeric.NonNegative.Utility ( src/Numeric/NonNegative/Utility.hs, dist/build/Numeric/NonNegative/Utility.o )
[2 of 4] Compiling Numeric.NonNegative.Class ( src/Numeric/NonNegative/Class.hs, dist/build/Numeric/NonNegative/Class.o )
[3 of 4] Compiling Numeric.NonNegative.Wrapper ( src/Numeric/NonNegative/Wrapper.hs, dist/build/Numeric/NonNegative/Wrapper.o )

src/Numeric/NonNegative/Wrapper.hs:177:4: error:
    ‘coarbitrary’ is not a (visible) method of class ‘Arbitrary’
cabal: Leaving directory '/tmp/cabal-tmp-15370/non-negative-0.0.1'
cabal: Error: some packages failed to install:
event-list-0.0.5 depends on non-negative-0.0.1 which failed to install.
midi-0.0.4 depends on non-negative-0.0.1 which failed to install.
non-negative-0.0.1 failed during the building phase. The exception was:
ExitFailure 1