error[E0050]: method `calm_down_please` has 3 parameters but the declaration in trait `TooMuch::calm_down_please` has 0 --> $DIR/method-signature-matches.rs:36:28 | LL | fn calm_down_please() -> impl Sized; | ------------------------------------ trait requires 0 parameters ... LL | fn calm_down_please(_: (), _: (), _: ()) {} | ^^^^^^^^^^^^^^^^ expected 0 parameters, found 3 error: aborting due to previous error For more information about this error, try `rustc --explain E0050`.