Resolving dependencies...
Configuring cereal-0.3.5.2...
Building cereal-0.3.5.2...
Preprocessing library cereal-0.3.5.2...
[1 of 5] Compiling Data.Serialize.Builder ( src/Data/Serialize/Builder.hs, dist/build/Data/Serialize/Builder.o )
[2 of 5] Compiling Data.Serialize.Put ( src/Data/Serialize/Put.hs, dist/build/Data/Serialize/Put.o )
[3 of 5] Compiling Data.Serialize.Get ( src/Data/Serialize/Get.hs, dist/build/Data/Serialize/Get.o )

src/Data/Serialize/Get.hs:272:15: Warning: Defined but not used: k'

src/Data/Serialize/Get.hs:273:14: Warning: Defined but not used: c'
[4 of 5] Compiling Data.Serialize.IEEE754 ( src/Data/Serialize/IEEE754.hs, dist/build/Data/Serialize/IEEE754.o )

src/Data/Serialize/IEEE754.hs:83:39: Warning:
    In the use of `castSTUArray' (imported from Data.Array.ST):
    Deprecated: "Please import from Data.Array.Unsafe instead; This will be removed in the next release"
[5 of 5] Compiling Data.Serialize   ( src/Data/Serialize.hs, dist/build/Data/Serialize.o )
In-place registering cereal-0.3.5.2...
Running Haddock for cereal-0.3.5.2...
Running hscolour for cereal-0.3.5.2...
Preprocessing library cereal-0.3.5.2...
Preprocessing library cereal-0.3.5.2...
Warning: The documentation for the following packages are not installed. No
links will be generated to these packages: rts-1.0

src/Data/Serialize/Get.hs:272:15: Warning: Defined but not used: k'

src/Data/Serialize/Get.hs:273:14: Warning: Defined but not used: c'

src/Data/Serialize/IEEE754.hs:83:39: Warning:
    In the use of `castSTUArray' (imported from Data.Array.ST):
    Deprecated: "Please import from Data.Array.Unsafe instead; This will be removed in the next release"
Haddock coverage:
  96% ( 26 / 27) in 'Data.Serialize.Builder'
  69% ( 29 / 42) in 'Data.Serialize.Put'
  94% ( 50 / 53) in 'Data.Serialize.Get'
 100% ( 11 / 11) in 'Data.Serialize.IEEE754'
Cannot find documentation for: $example
 100% ( 11 / 11) in 'Data.Serialize'
Warning: Data.Serialize.Put: could not find link destinations for:
    Data.Serialize.Put.PairS
Warning: Data.Serialize.Get: could not find link destinations for:
    Data.Serialize.Get.get
Documentation created: dist/doc/html/cereal/index.html
Installing library in
/srv/hackage/var/build/tmp-install/lib/cereal-0.3.5.2/ghc-7.6.3
Registering cereal-0.3.5.2...
Installed cereal-0.3.5.2
Downloading dclabel-0.9.0.0...
Configuring dclabel-0.9.0.0...
Building dclabel-0.9.0.0...
Preprocessing library dclabel-0.9.0.0...
[1 of 6] Compiling DCLabel.Core     ( DCLabel/Core.hs, dist/build/DCLabel/Core.o )

DCLabel/Core.hs:101:17:
    Duplicate instance declarations:
      instance [safe] Ord Clause -- Defined at DCLabel/Core.hs:101:17
      instance [safe] Ord Clause -- Defined at DCLabel/Core.hs:103:10
Failed to install dclabel-0.9.0.0
cabal: Error: some packages failed to install:
dclabel-0.9.0.0 failed during the building phase. The exception was:
ExitFailure 1