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tcfail174.hs:9:10:
    Couldn't match expected type `forall a. a -> a'
                with actual type `a0 -> a0'
    In the first argument of `Base', namely `id'
    In the expression: Base id
    In an equation for `g': g = Base id

tcfail174.hs:13:14:
    Couldn't match expected type `forall x. x -> a0'
                with actual type `forall a. a -> a'
    Expected type: Capture (forall x. x -> a0)
      Actual type: Capture (forall a. a -> a)
    In the first argument of `Capture', namely `g'
    In the expression: Capture g

tcfail174.hs:16:14:
    Couldn't match expected type `forall x. x -> b'
                with actual type `forall a. a -> a'
    Expected type: Capture (forall x. x -> b)
      Actual type: Capture (forall a. a -> a)
    In the first argument of `Capture', namely `g'
    In the expression: Capture g