{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"//"}]}
                        // There is always an `Elided(LifetimeRes::Infer)` inside an `AnonConst`.
                    LifetimeRibKind::ConcreteAnonConst(_) => {
                        span_bug!(elided_lifetime_span, "unexpected rib kind: {:?}", rib.kind)