{"ast_node_type":"function","tokens":[{"end":83,"kind":"keyword","start":0,"text":"fn"}]}
    fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::Item<'tcx>) {
impl<'tcx> LateLintPass<'tcx> for DerefIntoDynSupertrait {
        let tcx = cx.tcx;