src/test/ui/rfcs/rfc-1937-termination-trait/termination-trait-for-result-box-error_ok.rs - toolchain/rustc - Git at Google

 // run-pass
 use std::io::Error;

 fn main() -> Result<(), Box<Error>> {
     Ok(())
 }
	// run-pass
	use std::io::Error;

	fn main() -> Result<(), Box<Error>> {
	Ok(())
	}