{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"impl<'tcx>"}]}
impl<'tcx> TypeOpInfo<'tcx> for AscribeUserTypeQuery<'tcx> {
    fn fallback_error(&self, tcx: TyCtxt<'tcx>, span: Span) -> Diag<'tcx> {