{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"prev.build_mismatch_error(&hidden_type,"}]}
                            prev.build_mismatch_error(&hidden_type, tcx).map(|d| d.emit());
                        let (Ok(guar) | Err(guar)) =
                        entry.ty = Ty::new_error(tcx, guar);