Scenario: Simple propagation
     Given I have 2 seed nodes
     When I have 4 base nodes connected to all seed nodes
     When I have a SHA3 miner MINER connected to all seed nodes
     When mining node MINER mines 5 blocks
     Then node MINER is at height 5
     Then all nodes are at height 5
      Step failed:
      Defined: tests/features/Propagation.feature:32:5
      Matched: integration_tests/tests/steps/node_steps.rs:166:1
      Step panicked. Captured output: called `Result::unwrap()` on an `Err` value: transport error
      
      Caused by:
          0: error trying to connect: tcp connect error: Connection refused (os error 111)
          1: tcp connect error: Connection refused (os error 111)
          2: Connection refused (os error 111)
      Client {
          base_nodes: {},
          blocks: {},
          miners: {
              "MINER": MinerProcess {
                  name: "MINER",
                  base_node_name: "MINER",
                  wallet_name: "MINER",
                  mine_until_height: 100000,
                  stealth: false,
              },
          },
          ffi_wallets: {},
          wallets: {},
          merge_mining_proxies: {},
          chat_clients: [],
          transactions: {},
          wallet_addresses: {},
          utxos: {},
          output_hash: None,
          pre_image: None,
          wallet_connected_to_base_node: {},
          seed_nodes: [
              "seed_node_0",
              "seed_node_1",
          ],
          wallet_tx_ids: {},
          errors: [],
          last_imported_tx_ids: [],
          last_merge_miner_response: Null,
      }