alt/test_combined_assignment_alt1.nit:23,5--6: Error: method `+` does not exists in `Object`.
alt/test_combined_assignment_alt1.nit:28,5--6: Error: method `+` does not exists in `Object`.
alt/test_combined_assignment_alt1.nit:29,10: Type Error: expected `Int`, got `Object`.
alt/test_combined_assignment_alt1.nit:49,5--6: Error: method `+` does not exists in `Object`.