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 network-2.6.3.1...
Installed mtl-2.2.1
Building network-2.6.3.1...
Installed primitive-0.6.2.0
Configuring random-1.1...
Building random-1.1...
Configuring text-1.2.2.1...
Installed random-1.1
Building text-1.2.2.1...
Configuring regex-base-0.93.2...
Installed network-2.6.3.1
Building regex-base-0.93.2...
Installed regex-base-0.93.2
Configuring tf-random-0.5...
Building tf-random-0.5...
Configuring regex-posix-0.95.2...
Installed tf-random-0.5
Building regex-posix-0.95.2...
Installed regex-posix-0.95.2
Configuring regex-compat-0.95.1...
Building regex-compat-0.95.1...
Configuring QuickCheck-2.9.2...
Installed text-1.2.2.1
Building QuickCheck-2.9.2...
Installed regex-compat-0.95.1
Configuring parsec-3.1.11...
Building parsec-3.1.11...
Installed parsec-3.1.11
Configuring network-uri-2.6.1.0...
Building network-uri-2.6.1.0...
Installed network-uri-2.6.1.0
Configuring HTTP-4000.3.4...
Building HTTP-4000.3.4...
Installed QuickCheck-2.9.2
Configuring HCL-1.3...
Building HCL-1.3...
Failed to install HCL-1.3
Build log ( /home/builder/.cabal/logs/HCL-1.3.log ):
cabal: Entering directory '/tmp/cabal-tmp-20165/HCL-1.3'
Configuring HCL-1.3...
Building HCL-1.3...
Preprocessing library HCL-1.3...
[1 of 1] Compiling System.Console.HCL ( src/System/Console/HCL.hs, dist/build/System/Console/HCL.o )

src/System/Console/HCL.hs:806:3: error:
    ‘coarbitrary’ is not a (visible) method of class ‘Arbitrary’

src/System/Console/HCL.hs:819:3: error:
    ‘coarbitrary’ is not a (visible) method of class ‘Arbitrary’

src/System/Console/HCL.hs:832:3: error:
    ‘coarbitrary’ is not a (visible) method of class ‘Arbitrary’
cabal: Leaving directory '/tmp/cabal-tmp-20165/HCL-1.3'
Installed HTTP-4000.3.4
cabal: Error: some packages failed to install:
HCL-1.3 failed during the building phase. The exception was:
ExitFailure 1
NGrams-1.0 depends on HCL-1.3 which failed to install.