{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":")"}]}
    ) -> Result<Option<ty::Instance<'tcx>>, ErrorGuaranteed> {
        key: ty::PseudoCanonicalInput<'tcx, (DefId, GenericArgsRef<'tcx>)>
        desc { "resolving instance `{}`", ty::Instance::new_raw(key.value.0, key.value.1) }