Resolving dependencies...
Configuring containers-0.4.2.1...
Building containers-0.4.2.1...
Preprocessing library containers-0.4.2.1...
[1 of 7] Compiling Data.Sequence    ( Data/Sequence.hs, dist/build/Data/Sequence.o )

Data/Sequence.hs:311:1: Warning:
    SPECIALISE pragma on INLINE function probably won't fire: `deep'

Data/Sequence.hs:312:1: Warning:
    SPECIALISE pragma on INLINE function probably won't fire: `deep'

Data/Sequence.hs:437:1: Warning:
    SPECIALISE pragma on INLINE function probably won't fire: `node2'

Data/Sequence.hs:438:1: Warning:
    SPECIALISE pragma on INLINE function probably won't fire: `node2'

Data/Sequence.hs:443:1: Warning:
    SPECIALISE pragma on INLINE function probably won't fire: `node3'

Data/Sequence.hs:444:1: Warning:
    SPECIALISE pragma on INLINE function probably won't fire: `node3'
[2 of 7] Compiling Data.Tree        ( Data/Tree.hs, dist/build/Data/Tree.o )
[3 of 7] Compiling Data.Graph       ( Data/Graph.hs, dist/build/Data/Graph.o )
[4 of 7] Compiling Data.Set         ( Data/Set.hs, dist/build/Data/Set.o )
[5 of 7] Compiling Data.Map         ( Data/Map.hs, dist/build/Data/Map.o )
[6 of 7] Compiling Data.IntSet      ( Data/IntSet.hs, dist/build/Data/IntSet.o )
[7 of 7] Compiling Data.IntMap      ( Data/IntMap.hs, dist/build/Data/IntMap.o )
In-place registering containers-0.4.2.1...
Running Haddock for containers-0.4.2.1...
Running hscolour for containers-0.4.2.1...
Preprocessing library containers-0.4.2.1...
Preprocessing library containers-0.4.2.1...
Haddock coverage:
 100% ( 82 / 82) in 'Data.Sequence'
  94% ( 15 / 16) in 'Data.Tree'
 100% ( 33 / 33) in 'Data.Graph'
 100% ( 60 / 60) in 'Data.Set'
 100% ( 58 / 58) in 'Data.IntSet'
  99% (116 /117) in 'Data.IntMap'
 100% (128 /128) in 'Data.Map'
Warning: Data.Sequence: could not find link destinations for:
    Data.Sequence.PQueue Data.Sequence.applicativeTree Data.Sequence.unrollPQ Data.Sequence.toPQ Data.Sequence.FingerTree Data.Sequence.mergePQ
Warning: Data.IntMap: could not find link destinations for:
    Data.IntMap.mapAccumL
Warning: Data.Map: could not find link destinations for:
    Data.Map.mapAccumL
Documentation created: dist/doc/html/containers/index.html
Installing library in
/srv/hackage/var/build/tmp-install/lib/x86_64-linux-ghc-7.6.3/containers-0.4.2.1
Registering containers-0.4.2.1...
Installed containers-0.4.2.1
Downloading fountain-0.0.5...
Configuring fountain-0.0.5...
Building fountain-0.0.5...
Preprocessing library fountain-0.0.5...
[1 of 1] Compiling Codec.Fountain   ( Codec/Fountain.hs, dist/build/Codec/Fountain.o )

Codec/Fountain.hs:86:62:
    Could not deduce (Num a) arising from the literal `0'
    from the context (Bits a)
      bound by the type signature for
                 decoder :: Bits a => Int -> Precoding -> Decoder a
      at Codec/Fountain.hs:85:12-50
    Possible fix:
      add (Num a) to the context of
        the type signature for
          decoder :: Bits a => Int -> Precoding -> Decoder a
    In the second argument of `Droplet', namely `0'
    In the expression: Droplet (S.insert i s) 0
    In the first argument of `f', namely
      `[Droplet (S.insert i s) 0 |
          (i, s) <- zip [messageLength .. ] precoding]'
Failed to install fountain-0.0.5
cabal: Error: some packages failed to install:
fountain-0.0.5 failed during the building phase. The exception was:
ExitFailure 1