src/test/ui/main-wrong-type.rs - rust - Git at Google

 struct S {
     x: isize,
     y: isize,
 }

 fn main(foo: S) {
 //~^ ERROR: `main` function has wrong type [E0580]
 }
	struct S {
	x: isize,
	y: isize,
	}

	fn main(foo: S) {
	//~^ ERROR: `main` function has wrong type [E0580]
	}