{"ast_node_type":"function","tokens":[{"end":79,"kind":"keyword","start":0,"text":"fn"}]}
    fn check_local(&mut self, cx: &LateContext<'_>, local: &hir::LetStmt<'_>) {
impl<'tcx> LateLintPass<'tcx> for LetUnderscore {
        if matches!(local.source, rustc_hir::LocalSource::AsyncFn) {