thread 'main' panicked at 'split_to out of bounds: 4 <= 1', on OSX 10.5.14

[hlzhang]

Mac OSX 10.5.14

Cargo.toml

...
rust-tun ={ version = "0.5.0", , features = ["async"] }
futures = "0.3.1"
tokio = { version = "0.2", features = ["full"]}
tokio-util = { version = "0.3", features = ["codec", "udp"]}
...

thread 'main' panicked at 'split_to out of bounds: 4 <= 1', /Users/user/.cargo/registry/src/github.com-1ecc6299db9ec823/bytes-0.5.4/src/bytes_mut.rs:352:9
stack backtrace:
   0: backtrace::backtrace::libunwind::trace
             at /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/libunwind.rs:88
   1: backtrace::backtrace::trace_unsynchronized
             at /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/mod.rs:66
   2: std::sys_common::backtrace::_print_fmt
             at src/libstd/sys_common/backtrace.rs:84
   3: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
             at src/libstd/sys_common/backtrace.rs:61
   4: core::fmt::write
             at src/libcore/fmt/mod.rs:1025
   5: std::io::Write::write_fmt
             at src/libstd/io/mod.rs:1426
   6: std::sys_common::backtrace::_print
             at src/libstd/sys_common/backtrace.rs:65
   7: std::sys_common::backtrace::print
             at src/libstd/sys_common/backtrace.rs:50
   8: std::panicking::default_hook::{{closure}}
             at src/libstd/panicking.rs:193
   9: std::panicking::default_hook
             at src/libstd/panicking.rs:210
  10: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:471
  11: rust_begin_unwind
             at src/libstd/panicking.rs:375
  12: core::panicking::panic_fmt
             at src/libcore/panicking.rs:84
  13: bytes::bytes_mut::BytesMut::split_to
             at /Users/user/.cargo/registry/src/github.com-1ecc6299db9ec823/bytes-0.5.4/src/bytes_mut.rs:352
  14: <tun::async::codec::TunPacketCodec as tokio_util::codec::decoder::Decoder>::decode
             at /Users/user/CLionProjects/rust-tun/src/async/codec.rs:106
  15: <tokio_util::codec::framed_read::FramedRead2<T> as futures_core::stream::Stream>::poll_next
             at /Users/user/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-util-0.3.1/src/codec/framed_read.rs:269
  16: <tokio_util::codec::framed::Framed<T,U> as futures_core::stream::Stream>::poll_next
             at /Users/user/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-util-0.3.1/src/codec/framed.rs:257
  17: <futures_util::stream::stream::split::SplitStream<S> as futures_core::stream::Stream>::poll_next
             at /Users/user/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.5/src/stream/stream/split.rs:31
  18: futures_util::stream::stream::StreamExt::poll_next_unpin
             at /Users/user/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.5/src/stream/stream/mod.rs:1323
  19: <futures_util::stream::stream::next::Next<St> as core::future::future::Future>::poll
             at /Users/user/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-util-0.3.5/src/stream/stream/next.rs:35
  20: std::future::poll_with_tls_context
             at /rustc/5e1a799842ba6ed4a57e91f7ab9435947482f7d8/src/libstd/future.rs:99
...

When I was doing something like this

let framed: FramedTunQueue = tun_queue.into_framed();
let (mut tun_sink, mut tun_stream) = framed.split();
while let Some(tun_pkt) = tun_stream.next().await {... // panic at this line