Error found:
in module Main
at tests/purs/failing/CoercibleHigherKindedNewtypes.purs:13:8 - 13:14 (line 13, column 8 - line 13, column 14)

  No type class instance was found for
                                
    Prim.Coerce.Coercible Int   
                          String
                                

while solving type class constraint
                                                      
  Prim.Coerce.Coercible (Ap @Type @Type N1 Int String)
                        (Ap @Type @Type N2 Int String)
                                                      
while checking that type forall (a :: Type) (b :: Type). Coercible @Type a b => a -> b
  is at least as general as type Ap @Type @Type N1 Int String -> Ap @Type @Type N2 Int String
while checking that expression coerce
  has type Ap @Type @Type N1 Int String -> Ap @Type @Type N2 Int String
in value declaration swap

See https://github.com/purescript/documentation/blob/master/errors/NoInstanceFound.md for more information,
or to contribute content related to this error.