Resolving dependencies...
Configuring Diff-0.3.2...
Building Diff-0.3.2...
Preprocessing library Diff-0.3.2...
[1 of 3] Compiling Data.Algorithm.Diff ( src/Data/Algorithm/Diff.hs, dist/build/Data/Algorithm/Diff.o )
[2 of 3] Compiling Data.Algorithm.DiffOutput ( src/Data/Algorithm/DiffOutput.hs, dist/build/Data/Algorithm/DiffOutput.o )

src/Data/Algorithm/DiffOutput.hs:16:1: Warning:
    The import of ‘Data.Monoid’ is redundant
      except perhaps to import instances from ‘Data.Monoid’
    To import instances alone, use: import Data.Monoid()
[3 of 3] Compiling Data.Algorithm.DiffContext ( src/Data/Algorithm/DiffContext.hs, dist/build/Data/Algorithm/DiffContext.o )

src/Data/Algorithm/DiffContext.hs:20:1: Warning:
    The import of ‘Data.Monoid’ is redundant
      except perhaps to import instances from ‘Data.Monoid’
    To import instances alone, use: import Data.Monoid()
In-place registering Diff-0.3.2...
Running Haddock for Diff-0.3.2...
cabal: Haddock's internal GHC version must match the configured GHC version.
The GHC version is 7.10.2 but haddock is using GHC version 7.8.3
Creating package registration file: /tmp/pkgConf-Diff-0.3336465782861021530.2
Installing library in
/home/builder/hackage-server/build-cache/tmp-install/lib/x86_64-linux-ghc-7.10.2/Diff-0.3.2-DxiqnH2v4bt9bHNo1e9XlU
Registering Diff-0.3.2...
Installed Diff-0.3.2
Configuring diffcabal-0.1.1...
Building diffcabal-0.1.1...
Preprocessing executable 'diffcabal' for diffcabal-0.1.1...

Main.hs:27:18:
    Could not find module ‘Control.OldException’
    Perhaps you meant Control.Exception (from base-4.8.1.0)
    Use -v to see a list of the files searched for.
Failed to install diffcabal-0.1.1
cabal: Error: some packages failed to install:
diffcabal-0.1.1 failed during the building phase. The exception was:
ExitFailure 1