Fix clippy errors

Author: cramertj

futures-core/src/future/future_obj.rs

@@ -47,7 +47,10 @@ impl<'a, T> LocalFutureObj<'a, T> {
         }
     }
 
-    /// Converts the `LocalFutureObj` into a `FutureObj`
+    /// Converts the `LocalFutureObj` into a `FutureObj`.
+    ///
+    /// # Safety
+    ///
     /// To make this operation safe one has to ensure that the `UnsafeFutureObj`
     /// instance from which this `LocalFutureObj` was created actually
     /// implements `Send`.

futures-util/src/task/waker.rs

@@ -30,6 +30,7 @@ where
 // FIXME: panics on Arc::clone / refcount changes could wreak havoc on the
 // code here. We should guard against this by aborting.
 
+#[allow(clippy::redundant_clone)] // The clone here isn't actually redundant.
 unsafe fn increase_refcount<T: ArcWake>(data: *const ()) {
     // Retain Arc, but don't touch refcount by wrapping in ManuallyDrop
     let arc = mem::ManuallyDrop::new(Arc::<T>::from_raw(data as *const T));