Panics on [tcpin, tcpout, udpout, udpin, udpbcast]: failed to lookup address information: Temporary failure in name resolution

[joaoantoniocardoso]

For example, tcpout:

pub fn tcpout<T: ToSocketAddrs>(address: T) -> io::Result<TcpConnection> {
    let addr = address
        .to_socket_addrs()
        .unwrap()
        .next()
        .expect("Host address lookup failed.");
    let socket = TcpStream::connect(addr)?;
    socket.set_read_timeout(Some(Duration::from_millis(100)))?;

    Ok(TcpConnection {
        reader: Mutex::new(socket.try_clone()?),
        writer: Mutex::new(TcpWrite {
            socket,
            sequence: 0,
        }),
        protocol_version: MavlinkVersion::V2,
    })
}

Where the to_socket_addrs.unwrap() can Panic.

example of backtrace:

thread 'x' panicked at /home/joaoantoniocardoso/.cargo/registry/src/index.crates.io-6f17d22bba15001f/mavlink-0.10.4/src/connection/tcp.rs:29:10:
called `Result::unwrap()` on an `Err` value: Custom { kind: Uncategorized, error: "failed to lookup address information: Temporary failure in name resolution" }
stack backtrace:
   0:     0x5625bfdefc7c - std::backtrace_rs::backtrace::libunwind::trace::ha69d38c49f1bf263
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x5625bfdefc7c - std::backtrace_rs::backtrace::trace_unsynchronized::h93125d0b85fd543c
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x5625bfdefc7c - std::sys_common::backtrace::_print_fmt::h8d65f438e8343444
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/sys_common/backtrace.rs:67:5
   3:     0x5625bfdefc7c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h41751d2af6c8033a
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x5625bfe1ddac - core::fmt::rt::Argument::fmt::h5db2f552d8a28f63
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/fmt/rt.rs:138:9
   5:     0x5625bfe1ddac - core::fmt::write::h99465148a27e4883
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/fmt/mod.rs:1114:21
   6:     0x5625bfdec01e - std::io::Write::write_fmt::hee8dfd57bd179ab2
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/io/mod.rs:1763:15
   7:     0x5625bfdefa64 - std::sys_common::backtrace::_print::h019a3cee3e814da4
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x5625bfdefa64 - std::sys_common::backtrace::print::h55694121c2ddf918
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x5625bfdf1313 - std::panicking::default_hook::{{closure}}::h29cbe3da3891b0b0
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:272:22
  10:     0x5625bfdf1034 - std::panicking::default_hook::h881e76b2b8c74280
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:292:9
  11:     0x5625bfdf1895 - std::panicking::rust_panic_with_hook::hcc36e25b6e33969c
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:731:13
  12:     0x5625bfdf1791 - std::panicking::begin_panic_handler::{{closure}}::ha415efb0f69f41f9
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:609:13
  13:     0x5625bfdf01a6 - std::sys_common::backtrace::__rust_end_short_backtrace::h395fe90f99451e4e
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/sys_common/backtrace.rs:170:18
  14:     0x5625bfdf14e2 - rust_begin_unwind
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:597:5
  15:     0x5625be153695 - core::panicking::panic_fmt::h452a83e54ecd764e
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/panicking.rs:72:14
  16:     0x5625be153c63 - core::result::unwrap_failed::hed0fccbe07e724fc
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/result.rs:1652:5
  17:     0x5625be1786d4 - core::result::Result<T,E>::unwrap::h7228e1c09352896a
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/result.rs:1077:23
  18:     0x5625be501998 - mavlink::connection::tcp::tcpout::h2d784a6bf21d8502
                               at /home/joaoantoniocardoso/.cargo/registry/src/index.crates.io-6f17d22bba15001f/mavlink-0.10.4/src/connection/tcp.rs:27:16
  19:     0x5625be5010c6 - mavlink::connection::tcp::select_protocol::hcc4ddc2605f75d80
                               at /home/joaoantoniocardoso/.cargo/registry/src/index.crates.io-6f17d22bba15001f/mavlink-0.10.4/src/connection/tcp.rs:15:21
  20:     0x5625be8c9c75 - mavlink::connection::connect::h3b1548f00cdd7ce1
                               at /home/joaoantoniocardoso/.cargo/registry/src/index.crates.io-6f17d22bba15001f/mavlink-0.10.4/src/connection/mod.rs:75:13
  21:     0x5625be80b0d2 - mavlink_camera_manager::mavlink::manager::Connection::connect::h7ebdc36e99b99076
                               at /home/joaoantoniocardoso/BlueRobotics/mavlink-camera-manager/src/mavlink/manager.rs:222:19
  22:     0x5625be8031d8 - mavlink_camera_manager::mavlink::manager::Manager::receiver_loop::h3390aeab506216b3
                               at /home/joaoantoniocardoso/BlueRobotics/mavlink-camera-manager/src/mavlink/manager.rs:120:42
  23:     0x5625be30b86a - <mavlink_camera_manager::mavlink::manager::Manager as core::default::Default>::default::{{closure}}::h68f053f4a5c44507
                               at /home/joaoantoniocardoso/BlueRobotics/mavlink-camera-manager/src/mavlink/manager.rs:59:28
  24:     0x5625be3c352e - std::sys_common::backtrace::__rust_begin_short_backtrace::ha58633fccff8c695
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/sys_common/backtrace.rs:154:18
  25:     0x5625be6afffa - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hfc229ebf972e7997
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/thread/mod.rs:529:17
  26:     0x5625be83a32e - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he98140c6ee3e3bfb
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/panic/unwind_safe.rs:271:9
  27:     0x5625be4c573b - std::panicking::try::do_call::hd491a6729dd5100f
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:504:40
  28:     0x5625be4d6a1b - __rust_try
  29:     0x5625be4bd7da - std::panicking::try::hce41a22c34be1b0a
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panicking.rs:468:19
  30:     0x5625be6af6f4 - std::panic::catch_unwind::h11a08d8f2be4da05
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/panic.rs:142:14
  31:     0x5625be6af6f4 - std::thread::Builder::spawn_unchecked_::{{closure}}::hcdb57dfed89e5238
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/thread/mod.rs:528:30
  32:     0x5625be25d03e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4b2a921e2b51d148
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/core/src/ops/function.rs:250:5
  33:     0x5625bfdf5455 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h51435299acd7166e
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/alloc/src/boxed.rs:2007:9
  34:     0x5625bfdf5455 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3f833c0a4926bdd4
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/alloc/src/boxed.rs:2007:9
  35:     0x5625bfdf5455 - std::sys::unix::thread::Thread::new::thread_start::h2c486d0230ab0d99
                               at /rustc/a28077b28a02b92985b3a3faecf92813155f1ea1/library/std/src/sys/unix/thread.rs:108:17
  36:     0x7f99b6caa9eb - <unknown>
  37:     0x7f99b6d2e7cc - <unknown>
  38:                0x0 - <unknown>