Arbitrary self types v2: enable in bootstrap.

Author: adetaylor

library/core/src/ops/deref.rs

@@ -365,7 +365,6 @@ unsafe impl<T: ?Sized> DerefPure for &mut T {}
 /// }
 /// ```
 #[lang = "receiver"]
-#[cfg(not(bootstrap))]
 #[stable(feature = "arbitrary_self_types", since = "CURRENT_RUSTC_VERSION")]
 pub trait Receiver {
     /// The target type on which the method may be called.
@@ -375,7 +374,6 @@ pub trait Receiver {
     type Target: ?Sized;
 }
 
-#[cfg(not(bootstrap))]
 #[stable(feature = "arbitrary_self_types", since = "CURRENT_RUSTC_VERSION")]
 impl<P: ?Sized, T: ?Sized> Receiver for P
 where

library/core/src/ops/mod.rs

@@ -171,7 +171,6 @@ pub use self::deref::DerefPure;
 #[cfg(bootstrap)]
 #[unstable(feature = "legacy_receiver_trait", issue = "none")]
 pub use self::deref::LegacyReceiver;
-#[cfg(not(bootstrap))]
 #[stable(feature = "arbitrary_self_types", since = "CURRENT_RUSTC_VERSION")]
 pub use self::deref::Receiver;
 #[stable(feature = "rust1", since = "1.0.0")]