ClusterInfo::new_pull_requests has to lookup contact-infos: https://github.com/solana-labs/solana/blob/a1ef2bd74/core/src/cluster_info.rs#L1663-L1673 when it was already available when making pull requests: https://github.com/solana-labs/solana/blob/a1ef2bd74/core/src/crds_gossip_pull.rs#L232