error[E0642]: patterns aren't allowed in trait methods --> $DIR/E0642.rs:12:12 | LL | fn foo((x, y): (i32, i32)); //~ ERROR patterns aren't allowed in trait methods | ^^^^^^ help: give this argument a name or use an underscore to ignore it | LL | fn foo(_: (i32, i32)); //~ ERROR patterns aren't allowed in trait methods | ^ error[E0642]: patterns aren't allowed in trait methods --> $DIR/E0642.rs:16:12 | LL | fn bar((x, y): (i32, i32)) {} //~ ERROR patterns aren't allowed in trait methods | ^^^^^^ help: give this argument a name or use an underscore to ignore it | LL | fn bar(_: (i32, i32)) {} //~ ERROR patterns aren't allowed in trait methods | ^ error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0642`.