{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"//"}]}
                    // There is always an `Elided(LifetimeRes::Infer)` inside an `AnonConst`.
                LifetimeRibKind::ConcreteAnonConst(_) => {
                    span_bug!(lifetime.ident.span, "unexpected rib kind: {:?}", rib.kind)