tests/ui/feature-gates/feature-gate-loop-hints.rs - rust - Git at Google

 fn main() {
     #[unroll] //~ ERROR the `#[unroll]` attribute is an experimental feature
     for _ in 0..10 {}
 }
	fn main() {
	#[unroll] //~ ERROR the `#[unroll]` attribute is an experimental feature
	for _ in 0..10 {}
	}