$ TORRUST_CHECKER_CONFIG='{
    "udp_trackers": ["127.0.0.1:6969"],
    "http_trackers": [],
    "health_checks": []
}' cargo run --bin tracker_checker
   Compiling torrust-tracker v3.0.0-rc.1-develop (/home/josecelano/Documents/git/committer/me/github/torrust/torrust-tracker)
    Finished `dev` profile [optimized + debuginfo] target(s) in 14.73s
     Running `target/debug/tracker_checker`
2024-09-11T08:31:26.362237Z  INFO torrust_tracker::console::clients::checker::service: Running checks for trackers ...
[
  {
    "Udp": {
      "Err": {
        "remote_addr": "127.0.0.1:6969",
        "results": [
          [
            "Setup",
            {
              "Ok": null
            }
          ],
          [
            "Connect",
            {
              "Ok": null
            }
          ],
          [
            "Announce",
            {
              "Ok": null
            }
          ],
          [
            "Announce",
            {
              "Err": "Failed to receive a scrape response, with error: Timeout while trying to receive data."
            }
          ]
        ]
      }
    }
  }
]