src/test/ui/suppressed-error.rs - toolchain/rustc - Git at Google

 fn main() {
     let (x, y) = ();
 //~^ ERROR mismatched types
 //~| expected unit type `()`
 //~| found tuple `(_, _)`
 //~| expected `()`, found tuple
     return x;
 }
	fn main() {
	let (x, y) = ();
	//~^ ERROR mismatched types
	//~\| expected unit type `()`
	//~\| found tuple `(_, _)`
	//~\| expected `()`, found tuple
	return x;
	}