9 impl MutTrait for MutType {
10 fn function(&mut self) {}
26 (&MutType as &dyn MutTrait).function();
27 //~^ ERROR the `function` method cannot be invoked on `&dyn MutTrait`
28 //~| HELP you need `&mut dyn MutTrait` instead of `&dyn MutTrait`
29 (&mut Type as &mut dyn Trait).function();
30 //~^ ERROR the `function` method cannot be invoked on `&mut dyn Trait`
31 //~| HELP you need `&dyn Trait` instead of `&mut dyn Trait`