chore(dependencies): update futures to 0.3.1

src/client/dispatch.rs

@@ -194,10 +194,10 @@ impl<T, U> Callback<T, U> {
         }
     }
 
-    pub(crate) fn poll_cancel(&mut self, cx: &mut task::Context<'_>) -> Poll<()> {
+    pub(crate) fn poll_canceled(&mut self, cx: &mut task::Context<'_>) -> Poll<()> {
         match *self {
-            Callback::Retry(ref mut tx) => tx.poll_cancel(cx),
-            Callback::NoRetry(ref mut tx) => tx.poll_cancel(cx),
+            Callback::Retry(ref mut tx) => tx.poll_canceled(cx),
+            Callback::NoRetry(ref mut tx) => tx.poll_canceled(cx),
         }
     }
 
@@ -229,7 +229,7 @@ impl<T, U> Callback<T, U> {
                 },
                 Poll::Pending => {
                     // check if the callback is canceled
-                    ready!(cb.as_mut().unwrap().poll_cancel(cx));
+                    ready!(cb.as_mut().unwrap().poll_canceled(cx));
                     trace!("send_when canceled");
                     Poll::Ready(())
                 },

src/client/mod.rs

@@ -64,8 +64,7 @@ use std::sync::Arc;
 use std::time::Duration;
 
 use futures_channel::oneshot;
-use futures_util::future::{self, FutureExt as _, Either};
-use futures_util::try_future::TryFutureExt as _;
+use futures_util::future::{self, FutureExt as _, TryFutureExt as _, Either};
 use http::{Method, Request, Response, Uri, Version};
 use http::header::{HeaderValue, HOST};
 use http::uri::Scheme;

src/client/pool.rs

@@ -733,9 +733,6 @@ impl<T: Poolable + 'static> Future for IdleTask<T> {
     type Output = ();
 
     fn poll(mut self: Pin<&mut Self>, cx: &mut task::Context<'_>) -> Poll<Self::Output> {
-        // Interval is a Stream
-        use futures_core::Stream;
-
         loop {
             match Pin::new(&mut self.pool_drop_notifier).poll(cx) {
                 Poll::Ready(Ok(n)) => match n {},