tests/ui/fmt/issue-104142.rs - toolchain/rustc - Git at Google

 fn main() {
     println!(
         r#"
     \"\'}､"# //~ ERROR invalid format string: unmatched `}` found
     );
 }
	fn main() {
	println!(
	r#"
	\"\'}､"# //~ ERROR invalid format string: unmatched `}` found
	);
	}