Resolving dependencies...
Configuring call-stack-0.1.0...
Configuring mtl-2.2.1...
Building call-stack-0.1.0...
Building mtl-2.2.1...
Installed call-stack-0.1.0
Configuring old-locale-1.0.0.7...
Building old-locale-1.0.0.7...
Configuring parallel-3.2.1.0...
Installed old-locale-1.0.0.7
Building parallel-3.2.1.0...
Configuring text-1.2.2.1...
Installed mtl-2.2.1
Building text-1.2.2.1...
Installed parallel-3.2.1.0
Configuring HUnit-1.5.0.0...
Building HUnit-1.5.0.0...
Configuring old-time-1.1.0.3...
Installed HUnit-1.5.0.0
Building old-time-1.1.0.3...
Configuring regex-base-0.93.2...
Installed old-time-1.1.0.3
Building regex-base-0.93.2...
Installed regex-base-0.93.2
Installed text-1.2.2.1
Configuring parsec-3.1.11...
Building parsec-3.1.11...
Installed parsec-3.1.11
Configuring regex-tdfa-1.2.2...
Building regex-tdfa-1.2.2...
Installed regex-tdfa-1.2.2
Configuring Unixutils-1.34...
Building Unixutils-1.34...
Failed to install Unixutils-1.34
Build log ( /home/builder/.cabal/logs/Unixutils-1.34.log ):
cabal: Entering directory '/tmp/cabal-tmp-21247/Unixutils-1.34'
Configuring Unixutils-1.34...
Building Unixutils-1.34...
Preprocessing library Unixutils-1.34...
[ 1 of 13] Compiling System.Unix.SpecialDevice ( System/Unix/SpecialDevice.hs, dist/build/System/Unix/SpecialDevice.o )

System/Unix/SpecialDevice.hs:7:20: warning: [-Wtabs]
    Tab character found here, and in 31 further locations.
    Please use spaces instead.
[ 2 of 13] Compiling System.Unix.Shadow ( dist/build/System/Unix/Shadow.hs, dist/build/System/Unix/Shadow.o )

System/Unix/Shadow.hsc:53:1: warning: [-Wtabs]
    Tab character found here, and in 17 further locations.
    Please use spaces instead.
[ 3 of 13] Compiling System.Unix.Process ( System/Unix/Process.hs, dist/build/System/Unix/Process.o )

System/Unix/Process.hs:81:11: error:
    Variable not in scope:
      catch :: IO Bool -> (b1 -> m2 Bool) -> IO Bool

System/Unix/Process.hs:83:21: error:
    Variable not in scope:
      catch
        :: IO (Maybe FilePath)
           -> (b0 -> m1 (Maybe a0)) -> IO (Maybe String)

System/Unix/Process.hs:166:81: error:
    Variable not in scope:
      catch :: IO Readyness -> (IOError -> m0 Readyness) -> IO Readyness
cabal: Leaving directory '/tmp/cabal-tmp-21247/Unixutils-1.34'
cabal: Error: some packages failed to install:
Unixutils-1.34 failed during the building phase. The exception was:
ExitFailure 1