chore: async_await is stable on nightly

tests/h2-fuzz/src/main.rs

@@ -1,4 +1,3 @@
-#![feature(async_await)]
 use futures::future;
 use futures::stream::FuturesUnordered;
 use futures::Stream;

tests/h2-support/src/lib.rs

@@ -1,4 +1,3 @@
-#![feature(async_await)]
 //! Utilities to support tests.
 
 #[macro_use]

tests/h2-tests/tests/client_request.rs

@@ -1,5 +1,3 @@
-#![feature(async_await)]
-
 use futures::future::{join, ready, select, Either};
 use futures::stream::FuturesUnordered;
 use futures::StreamExt;

tests/h2-tests/tests/codec_read.rs

@@ -1,5 +1,3 @@
-#![feature(async_await)]
-
 use futures::future::join;
 use h2_support::prelude::*;
 use std::error::Error;

tests/h2-tests/tests/codec_write.rs

@@ -1,5 +1,3 @@
-#![feature(async_await)]
-
 use futures::future::join;
 use h2_support::prelude::*;
 

tests/h2-tests/tests/flow_control.rs

@@ -1,4 +1,3 @@
-#![feature(async_await)]
 use futures::future::{join, join4};
 use futures::{StreamExt, TryStreamExt};
 use h2_support::prelude::*;

tests/h2-tests/tests/hammer.rs

@@ -1,5 +1,3 @@
-#![feature(async_await)]
-
 use futures::{FutureExt, StreamExt, TryFutureExt};
 use h2_support::prelude::*;
 

tests/h2-tests/tests/ping_pong.rs

@@ -1,5 +1,3 @@
-#![feature(async_await)]
-
 use futures::channel::oneshot;
 use futures::future::join;
 use futures::{StreamExt, TryStreamExt};

tests/h2-tests/tests/prioritization.rs

@@ -1,5 +1,3 @@
-#![feature(async_await)]
-
 use futures::future::join;
 use futures::{FutureExt, StreamExt};
 use h2_support::prelude::*;

tests/h2-tests/tests/push_promise.rs

@@ -1,4 +1,3 @@
-#![feature(async_await)]
 use futures::future::join;
 use futures::{StreamExt, TryStreamExt};
 use h2_support::prelude::*;

tests/h2-tests/tests/server.rs

@@ -1,4 +1,3 @@
-#![feature(async_await)]
 #![deny(warnings)]
 
 use futures::future::{join, poll_fn};

tests/h2-tests/tests/stream_states.rs

@@ -1,4 +1,3 @@
-#![feature(async_await)]
 #![deny(warnings)]
 
 use futures::future::{join, join3, lazy, try_join};

tests/h2-tests/tests/trailers.rs

@@ -1,5 +1,3 @@
-#![feature(async_await)]
-
 use futures::StreamExt;
 use h2_support::prelude::*;