tests/ui/error-codes/E0069.rs - toolchain/rustc - Git at Google

 fn foo() -> u8 {
     return;
     //~^ ERROR `return;` in a function whose return type is not `()`
 }

 fn main() {
 }
	fn foo() -> u8 {
	return;
	//~^ ERROR `return;` in a function whose return type is not `()`
	}

	fn main() {
	}