error[E0307]: invalid `self` parameter type: `&dyn Bar` --> $DIR/invalid-self-dyn-receiver.rs:10:22 | LL | fn method(self: &dyn Bar) {} | ^^^^^^^^ | = note: type of `self` must be `Self` or some type implementing `Receiver` = help: consider changing to `self`, `&self`, `&mut self`, or a type implementing `Receiver` such as `self: Box`, `self: Rc`, or `self: Arc` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0307`.