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tcfail076.hs:18:82:
Couldn't match type ‘res’ with ‘res1’
‘res’ is a rigid type variable bound by
a type expected by the context: (a -> m res) -> m res
at tcfail076.hs:18:28
‘res1’ is a rigid type variable bound by
a type expected by the context: (b -> m res1) -> m res1
at tcfail076.hs:18:64
Expected type: m res1
Actual type: m res
In the expression: cont a
In the first argument of ‘KContT’, namely ‘(\ cont' -> cont a)’
Relevant bindings include
cont' :: b -> m res1 (bound at tcfail076.hs:18:73)
cont :: a -> m res (bound at tcfail076.hs:18:37)
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