Resolving dependencies...
Configuring primes-0.2.1.0...
Building primes-0.2.1.0...
Installed primes-0.2.1.0
Configuring monoid-subclasses-0.4.5...
Building monoid-subclasses-0.4.5...
Failed to install monoid-subclasses-0.4.5
Build log ( /home/builder/.cabal/logs/ghc-8.2.2/monoid-subclasses-0.4.5-LrlvRvZ6mriJEiW062SBQC.log ):
cabal: Entering directory '/tmp/cabal-tmp-28147/monoid-subclasses-0.4.5'
Configuring monoid-subclasses-0.4.5...
Preprocessing library for monoid-subclasses-0.4.5..
Building library for monoid-subclasses-0.4.5..
[1 of 9] Compiling Data.Monoid.Cancellative ( Data/Monoid/Cancellative.hs, dist/build/Data/Monoid/Cancellative.o )
[2 of 9] Compiling Data.Monoid.Null ( Data/Monoid/Null.hs, dist/build/Data/Monoid/Null.o )
[3 of 9] Compiling Data.Monoid.Factorial ( Data/Monoid/Factorial.hs, dist/build/Data/Monoid/Factorial.o )
[4 of 9] Compiling Data.Monoid.Textual ( Data/Monoid/Textual.hs, dist/build/Data/Monoid/Textual.o )

Data/Monoid/Textual.hs:545:1: warning: [-Worphans]
    Orphan instance: instance IsString (Vector.Vector Char)
    To avoid this
        move the instance declaration to the module of the class or of the type, or
        wrap the type with a newtype and declare the instance on the new type.
    |
545 | instance IsString (Vector.Vector Char) where
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^...
[5 of 9] Compiling Data.Monoid.Instances.Stateful ( Data/Monoid/Instances/Stateful.hs, dist/build/Data/Monoid/Instances/Stateful.o )

Data/Monoid/Instances/Stateful.hs:57:62: error:
    Ambiguous occurrence ‘<>’
    It could refer to either ‘Data.Semigroup.<>’,
                             imported from ‘Data.Semigroup’ at Data/Monoid/Instances/Stateful.hs:26:1-21
                          or ‘Data.Monoid.<>’,
                             imported from ‘Data.Monoid’ at Data/Monoid/Instances/Stateful.hs:27:1-18
   |
57 |    Stateful (f, s1) <*> Stateful (x, s2) = Stateful (f x, s1 <> s2)
   |                                                              ^^

Data/Monoid/Instances/Stateful.hs:60:43: error:
    Ambiguous occurrence ‘<>’
    It could refer to either ‘Data.Semigroup.<>’,
                             imported from ‘Data.Semigroup’ at Data/Monoid/Instances/Stateful.hs:26:1-21
                          or ‘Data.Monoid.<>’,
                             imported from ‘Data.Monoid’ at Data/Monoid/Instances/Stateful.hs:27:1-18
   |
60 |    Stateful x <> Stateful y = Stateful (x <> y)
   |                                           ^^

Data/Monoid/Instances/Stateful.hs:65:14: error:
    Ambiguous occurrence ‘<>’
    It could refer to either ‘Data.Semigroup.<>’,
                             imported from ‘Data.Semigroup’ at Data/Monoid/Instances/Stateful.hs:26:1-21
                          or ‘Data.Monoid.<>’,
                             imported from ‘Data.Monoid’ at Data/Monoid/Instances/Stateful.hs:27:1-18
   |
65 |    mappend = (<>)
   |              ^^^^
cabal: Leaving directory '/tmp/cabal-tmp-28147/monoid-subclasses-0.4.5'
cabal: Error: some packages failed to install:
monoid-subclasses-0.4.5-LrlvRvZ6mriJEiW062SBQC failed during the building
phase. The exception was:
ExitFailure 1