Update for new Pin API

Author: phil-opp

src/bin/async-await.rs

@@ -1,7 +1,7 @@
 #![feature(alloc)]
 #![feature(alloc_error_handler)]
 #![feature(generators, generator_trait)]
-#![feature(pin, futures_api)]
+#![feature(futures_api)]
 #![feature(arbitrary_self_types)]
 #![feature(async_await)]
 #![no_main]

src/future_mutex.rs

@@ -1,7 +1,7 @@
 use spin::Mutex;
 use core::{
     future::Future,
-    pin::{Pin, Unpin},
+    pin::Pin,
     mem,
 };
 use alloc::task::LocalWaker;

src/lib.rs

@@ -5,7 +5,6 @@
 #![feature(optin_builtin_traits)]
 #![feature(futures_api)]
 #![feature(generator_trait)]
-#![feature(pin)]
 #![feature(arbitrary_self_types)]
 #![feature(drain_filter)]
 #![feature(never_type)]

src/task_runtime.rs

@@ -29,7 +29,7 @@ impl Spawn for Executor {
 
 impl LocalSpawn for Executor {
     fn spawn_local_obj(&mut self, future: LocalFutureObj<'static, ()>) -> Result<(), SpawnError> {
-        self.add_task(Box::pinned(future));
+        self.add_task(Box::pin(future));
         Ok(())
     }
 }
@@ -55,7 +55,7 @@ impl Executor {
     where
         Fut: Future<Output = !> + 'static,
     {
-        let future_obj = Box::pinned(LocalFutureObj::new(Box::new(future)));
+        let future_obj = Box::pin(LocalFutureObj::new(Box::new(future)));
         self.idle_task = Some(future_obj);
     }