{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"(&GenericParamDefKind::Const"}]}
                    (&GenericParamDefKind::Const { .. }, GenericArg::Infer(inf)) => {
                        .into(),
                        self.fcx.ct_infer(Some(param), inf.span).into()