error[E0277]: the trait bound `WebSocketStream<S>: futures_sink::Sink<Message>` is not satisfied
   --> /home/ondra/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/ws_stream_tungstenite-0.14.0/src/tung_websocket.rs:145:53
    |
145 |         if ready!( Pin::new( &mut self.closer ).run( &mut self.inner, &mut self.notifier, cx) ).is_err()
    |                                                 ---       ^^^^^^^^^^ the trait `futures_sink::Sink<Message>` is not implemented for `WebSocketStream<S>`
    |                                                 |
    |                                                 required by a bound introduced by this call
    |
    = help: the following other types implement trait `futures_sink::Sink<Item>`:
              `&futures_channel::mpsc::UnboundedSender<T>` implements `futures_sink::Sink<T>`
              `&mut S` implements `futures_sink::Sink<Item>`
              `Box<S>` implements `futures_sink::Sink<Item>`
              `Buffer<Si, Item>` implements `futures_sink::Sink<Item>`
              `BufferUnordered<S>` implements `futures_sink::Sink<Item>`
              `Buffered<S>` implements `futures_sink::Sink<Item>`
              `Either<A, B>` implements `futures_sink::Sink<Item>`
              `Fanout<Si1, Si2>` implements `futures_sink::Sink<Item>`
            and 60 others
    = note: required for `&mut WebSocketStream<S>` to implement `futures_sink::Sink<Message>`
note: required by a bound in `Closer::run`
   --> /home/ondra/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/ws_stream_tungstenite-0.14.0/src/tung_websocket/closer.rs:95:21
    |
 92 |     pub(super) fn run
    |                   --- required by a bound in this associated function
...
 95 |         mut socket : impl Sink<tungstenite::Message, Error=TungErr> + Unpin ,
    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Closer::run`