1 error[E0050]: method `foo` has 2 parameters but the declaration in trait `Foo::foo` has 3
2 --> $DIR/trait-method-number-parameters.rs:7:9
4 LL | fn foo(&mut self, x: i32, y: i32) -> i32;
5 | ------------------------- trait requires 3 parameters
9 | |______________^ expected 3 parameters, found 2
11 error: aborting due to previous error
13 For more information about this error, try `rustc --explain E0050`.