Resolving dependencies...
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Installed mtl-2.2.1
Configuring Dangerous-0.3.0...
Building Dangerous-0.3.0...
Failed to install Dangerous-0.3.0
Build log ( /home/builder/.cabal/logs/Dangerous-0.3.0.log ):
cabal: Entering directory '/tmp/cabal-tmp-16069/Dangerous-0.3.0'
Configuring Dangerous-0.3.0...
Building Dangerous-0.3.0...
Preprocessing library Dangerous-0.3.0...
[1 of 2] Compiling Control.Dangerous ( src/Control/Dangerous.hs, dist/build/Control/Dangerous.o )

src/Control/Dangerous.hs:20:1: warning: [-Wunused-imports]
    The import of ‘Control.Applicative’ is redundant
      except perhaps to import instances from ‘Control.Applicative’
    To import instances alone, use: import Control.Applicative()
[2 of 2] Compiling Control.Dangerous.Extensions ( src/Control/Dangerous/Extensions.hs, dist/build/Control/Dangerous/Extensions.o )

src/Control/Dangerous/Extensions.hs:7:1: error:
    Failed to load interface for ‘Control.Monad.Maybe’
    Perhaps you meant
      Control.Monad.Fail (from base-4.9.0.0)
      Control.Monad.State (from mtl-2.2.1)
      Control.Monad.Cont (from mtl-2.2.1)
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-16069/Dangerous-0.3.0'
cabal: Error: some packages failed to install:
Dangerous-0.3.0 failed during the building phase. The exception was:
ExitFailure 1