Resolving dependencies...
cabal: Entering directory '/tmp/cabal-tmp-21469/Diff-0.3.4'
Configuring Diff-0.3.4...
Building Diff-0.3.4...
Preprocessing library Diff-0.3.4...
[1 of 3] Compiling Data.Algorithm.Diff ( src/Data/Algorithm/Diff.hs, dist/build/Data/Algorithm/Diff.o )
[2 of 3] Compiling Data.Algorithm.DiffContext ( src/Data/Algorithm/DiffContext.hs, dist/build/Data/Algorithm/DiffContext.o )
[3 of 3] Compiling Data.Algorithm.DiffOutput ( src/Data/Algorithm/DiffOutput.hs, dist/build/Data/Algorithm/DiffOutput.o )
Running Haddock for Diff-0.3.4...
Running hscolour for Diff-0.3.4...
Preprocessing library Diff-0.3.4...
Preprocessing library Diff-0.3.4...
Haddock coverage:
  88% (  7 /  8) in 'Data.Algorithm.Diff'
  Missing documentation for:
    getGroupedDiffBy (src/Data/Algorithm/Diff.hs:97)
 100% (  3 /  3) in 'Data.Algorithm.DiffContext'
 100% (  8 /  8) in 'Data.Algorithm.DiffOutput'
Warning: Data.Algorithm.DiffContext: could not find link destinations for:
    ContextDiff
Documentation created: dist/doc/html/Diff/index.html,
dist/doc/html/Diff/Diff.txt
Creating package registration file: /tmp/pkgConf-Diff-0.32145174067468703135.4
Installing library in
/home/builder/hackage-server/build-cache/tmp-install/lib/x86_64-linux-ghc-8.0.1.20161018/Diff-0.3.4-CvTvfLh1cVEpN1WaPEC4M
Registering Diff-0.3.4...
cabal: Leaving directory '/tmp/cabal-tmp-21469/Diff-0.3.4'
Installed Diff-0.3.4
cabal: Entering directory '/tmp/cabal-tmp-21469/diffcabal-0.1.1'
Configuring diffcabal-0.1.1...
Building diffcabal-0.1.1...
Preprocessing executable 'diffcabal' for diffcabal-0.1.1...
[1 of 1] Compiling Main             ( Main.hs, dist/build/diffcabal/diffcabal-tmp/Main.o )

Main.hs:27:1: error:
    Failed to load interface for ‘Control.OldException’
    Perhaps you meant Control.Exception (from base-4.9.0.0)
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-21469/diffcabal-0.1.1'
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