Resolving dependencies...
Configuring MaybeT-0.1.2...
Building MaybeT-0.1.2...
Preprocessing library MaybeT-0.1.2...
[1 of 1] Compiling Control.Monad.Maybe ( Control/Monad/Maybe.hs, dist/build/Control/Monad/Maybe.o )
In-place registering MaybeT-0.1.2...
Running Haddock for MaybeT-0.1.2...
Running hscolour for MaybeT-0.1.2...
Preprocessing library MaybeT-0.1.2...
Preprocessing library MaybeT-0.1.2...
Haddock coverage:
 100% (  6 /  6) in 'Control.Monad.Maybe'
Documentation created: dist/doc/html/MaybeT/index.html
Installing library in
/srv/hackage/var/build/tmp-install/lib/x86_64-linux-ghc-7.6.3/MaybeT-0.1.2
Registering MaybeT-0.1.2...
Installed MaybeT-0.1.2
Downloading stateful-mtl-1.0.7...
Configuring stateful-mtl-1.0.7...
Building stateful-mtl-1.0.7...
Preprocessing library stateful-mtl-1.0.7...
[1 of 2] Compiling Control.Monad.Trans.Operations ( Control/Monad/Trans/Operations.hs, dist/build/Control/Monad/Trans/Operations.o )
[2 of 2] Compiling Control.Monad.ST.Class ( Control/Monad/ST/Class.hs, dist/build/Control/Monad/ST/Class.o )
In-place registering stateful-mtl-1.0.7...
Running Haddock for stateful-mtl-1.0.7...
Running hscolour for stateful-mtl-1.0.7...
Preprocessing library stateful-mtl-1.0.7...
Preprocessing library stateful-mtl-1.0.7...
Haddock coverage:
   0% (  0 /  5) in 'Control.Monad.Trans.Operations'
Warning: Control.Monad.ST.Class: We do not support associated types in instances yet. These instances are affected:
Control.Monad.ST.Class.MonadST (GHC.ST.ST s), Control.Monad.ST.Class.MonadST GHC.Types.IO, (Control.Monad.ST.Class.MonadST m,
 Control.Monad.Trans.Class.MonadTrans t,
 GHC.Base.Monad m) =>
Control.Monad.ST.Class.MonadST (t m)
 100% (  2 /  2) in 'Control.Monad.ST.Class'
Documentation created: dist/doc/html/stateful-mtl/index.html
Installing library in
/srv/hackage/var/build/tmp-install/lib/x86_64-linux-ghc-7.6.3/stateful-mtl-1.0.7
Registering stateful-mtl-1.0.7...
Installed stateful-mtl-1.0.7
Downloading pqueue-mtl-1.0...
Configuring pqueue-mtl-1.0...
Building pqueue-mtl-1.0...
Preprocessing library pqueue-mtl-1.0...

Control/Monad/Queue/Class.hs:11:8:
    Could not find module `Control.Monad.ST.Trans'
    Perhaps you meant
      Control.Monad.Trans (from mtl-2.1.2)
      Control.Monad.ST.Class (from stateful-mtl-1.0.7)
      Control.Monad.ST.Safe (from base)
    Use -v to see a list of the files searched for.
Failed to install pqueue-mtl-1.0
cabal: Error: some packages failed to install:
pqueue-mtl-1.0 failed during the building phase. The exception was:
ExitFailure 1