Update to tokio 1.0, bytes 1.0 (#1076)

Co-authored-by: Wim Looman <git@nemo157.com>
Co-authored-by: Paolo Barbolini <paolo@paolo565.org>

src/async_impl/body.rs

@@ -7,7 +7,7 @@ use bytes::Bytes;
 use futures_core::Stream;
 use http_body::Body as HttpBody;
 use pin_project_lite::pin_project;
-use tokio::time::Delay;
+use tokio::time::Sleep;
 
 /// An asynchronous request body.
 pub struct Body {
@@ -27,7 +27,7 @@ enum Inner {
                     + Sync,
             >,
         >,
-        timeout: Option<Delay>,
+        timeout: Option<Pin<Box<Sleep>>>,
     },
 }
 
@@ -103,7 +103,7 @@ impl Body {
         }
     }
 
-    pub(crate) fn response(body: hyper::Body, timeout: Option<Delay>) -> Body {
+    pub(crate) fn response(body: hyper::Body, timeout: Option<Pin<Box<Sleep>>>) -> Body {
         Body {
             inner: Inner::Streaming {
                 body: Box::pin(WrapHyper(body)),
@@ -217,7 +217,7 @@ impl HttpBody for ImplStream {
                 ref mut timeout,
             } => {
                 if let Some(ref mut timeout) = timeout {
-                    if let Poll::Ready(()) = Pin::new(timeout).poll(cx) {
+                    if let Poll::Ready(()) = timeout.as_mut().poll(cx) {
                         return Poll::Ready(Some(Err(crate::error::body(crate::error::TimedOut))));
                     }
                 }