{"ast_node_type":"function","tokens":[{"end":76,"kind":"keyword","start":0,"text":"fn"}]}
    fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
impl<'tcx> LateLintPass<'tcx> for ForLoopsOverFallibles {
        let Some((pat, arg)) = extract_for_loop(expr) else { return };