1 files changed, 11 insertions, 6 deletions
diff --git a/liballoc/boxed.rs b/liballoc/boxed.rs
index 7bdf9ea..51523ca 100644
--- a/liballoc/boxed.rs
+++ b/liballoc/boxed.rs
@@ -64,7 +64,7 @@ use core::hash::{self, Hash};
 use core::marker::{self, Unsize};
 use core::mem;
 use core::ops::{CoerceUnsized, Deref, DerefMut};
-use core::ops::{Placer, Boxed, Place, InPlace, BoxPlace};
+use core::ops::{BoxPlace, Boxed, InPlace, Place, Placer};
 use core::ptr::{self, Unique};
 use core::raw::TraitObject;
 use core::convert::From;
@@ -525,15 +525,18 @@ impl<I: ExactSizeIterator + ?Sized> ExactSizeIterator for Box<I> {}
 /// }
 /// ```
 #[rustc_paren_sugar]
-#[unstable(feature = "fnbox", reason = "Newly introduced", issue = "28796")]
+#[unstable(feature = "fnbox",
+           reason = "will be deprecated if and when Box<FnOnce> becomes usable", issue = "28796")]
 pub trait FnBox<A> {
     type Output;
 
     fn call_box(self: Box<Self>, args: A) -> Self::Output;
 }
 
-#[unstable(feature = "fnbox", reason = "Newly introduced", issue = "28796")]
-impl<A, F> FnBox<A> for F where F: FnOnce<A>
+#[unstable(feature = "fnbox",
+           reason = "will be deprecated if and when Box<FnOnce> becomes usable", issue = "28796")]
+impl<A, F> FnBox<A> for F
+    where F: FnOnce<A>
 {
     type Output = F::Output;
 
@@ -542,7 +545,8 @@ impl<A, F> FnBox<A> for F where F: FnOnce<A>
     }
 }
 
-#[unstable(feature = "fnbox", reason = "Newly introduced", issue = "28796")]
+#[unstable(feature = "fnbox",
+           reason = "will be deprecated if and when Box<FnOnce> becomes usable", issue = "28796")]
 impl<'a, A, R> FnOnce<A> for Box<FnBox<A, Output = R> + 'a> {
     type Output = R;
 
@@ -551,7 +555,8 @@ impl<'a, A, R> FnOnce<A> for Box<FnBox<A, Output = R> + 'a> {
     }
 }
 
-#[unstable(feature = "fnbox", reason = "Newly introduced", issue = "28796")]
+#[unstable(feature = "fnbox",
+           reason = "will be deprecated if and when Box<FnOnce> becomes usable", issue = "28796")]
 impl<'a, A, R> FnOnce<A> for Box<FnBox<A, Output = R> + Send + 'a> {
     type Output = R;