tokio: fix windows build

Author: Keruspe

src/implementors/tokio.rs

@@ -11,7 +11,7 @@ use std::{
     task::{Context, Poll},
     time::{Duration, Instant},
 };
-use tokio::{io::unix::AsyncFd, net::TcpStream, runtime::Handle};
+use tokio::{net::TcpStream, runtime::Handle};
 use tokio_stream::{StreamExt, wrappers::IntervalStream};
 use tokio_util::compat::TokioAsyncReadCompatExt;
 
@@ -118,7 +118,9 @@ impl Reactor for Tokio {
     ) -> io::Result<impl AsyncIOHandle + Send> {
         let _enter = self.handle().as_ref().map(|handle| handle.enter());
         if cfg!(unix) {
-            Ok(Box::new(unix::AsyncFdWrapper(AsyncFd::new(socket)?)))
+            Ok(Box::new(unix::AsyncFdWrapper(
+                tokio::io::unix::AsyncFd::new(socket)?,
+            )))
         } else {
             Err(io::Error::other(
                 "Registering FD on tokio reactor is only supported on unix",
@@ -149,6 +151,7 @@ mod unix {
     use super::*;
     use futures_io::{AsyncRead, AsyncWrite};
     use std::io::{IoSlice, IoSliceMut, Read, Write};
+    use tokio::io::unix::AsyncFd;
 
     pub(super) struct AsyncFdWrapper<H: IO + Send + 'static>(pub(super) AsyncFd<IOHandle<H>>);