Error found:
in module Main
at tests/purs/failing/CoercibleConstrained3.purs:13:28 - 13:34 (line 13, column 28 - line 13, column 34)

  Could not match type
      
    a0
      
  with type
        
    N a0
        

while solving type class constraint
                                            
  Prim.Coerce.Coercible (Constrained a0)    
                        (Constrained (N a0))
                                            
while checking that type forall (a :: Type) (b :: Type). Coercible @Type a b => a -> b
  is at least as general as type Constrained a0 -> Constrained (N a0)
while checking that expression coerce
  has type Constrained a0 -> Constrained (N a0)
in value declaration constrainedToConstrained

where a0 is a rigid type variable
        bound at (line 13, column 28 - line 13, column 34)

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