{"ast_node_type":"function","tokens":[{"end":74,"kind":"keyword","start":0,"text":"fn"}]}
    fn check_expr(&mut self, cx: &LateContext<'_>, expr: &hir::Expr<'_>) {
impl LateLintPass<'_> for Diagnostics {
        let collect_args_tys_and_spans = |args: &[hir::Expr<'_>], reserve_one_extra: bool| {