{"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"err.span_label(self.tcx.hir_span(var_id),"}]}
            err.span_label(self.tcx.hir_span(var_id), msg);
            let msg = format!("first introduced with type `{var_ty}` here");
            let in_match = self.tcx.hir_parent_iter(var_id).any(|(_, n)| {