{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"for"}]}
                    for rib in self.lifetime_ribs[..i].iter().rev() {
                    let mut lifetimes_in_scope = vec![];
                        lifetimes_in_scope.extend(rib.bindings.iter().map(|(ident, _)| ident.span));