Use associated_type_bounds where applicable - closes #61738

2 files changed, 3 insertions, 8 deletions

diff --git a/src/libserialize/collection_impls.rs b/src/libserialize/collection_impls.rs
index 80aeecb84d7..d981740780e 100644
--- a/src/libserialize/collection_impls.rs
+++ b/src/libserialize/collection_impls.rs
@@ -9,10 +9,7 @@ use std::sync::Arc;
 
 use smallvec::{Array, SmallVec};
 
-impl<A> Encodable for SmallVec<A>
-    where A: Array,
-          A::Item: Encodable
-{
+impl<A: Array<Item: Encodable>> Encodable for SmallVec<A> {
     fn encode<S: Encoder>(&self, s: &mut S) -> Result<(), S::Error> {
         s.emit_seq(self.len(), |s| {
             for (i, e) in self.iter().enumerate() {
@@ -23,10 +20,7 @@ impl<A> Encodable for SmallVec<A>
     }
 }
 
-impl<A> Decodable for SmallVec<A>
-    where A: Array,
-          A::Item: Decodable
-{
+impl<A: Array<Item: Decodable>> Decodable for SmallVec<A> {
     fn decode<D: Decoder>(d: &mut D) -> Result<SmallVec<A>, D::Error> {
         d.read_seq(|d, len| {
             let mut vec = SmallVec::with_capacity(len);
diff --git a/src/libserialize/lib.rs b/src/libserialize/lib.rs
index 2ad85c603d1..67a48ca4af9 100644
--- a/src/libserialize/lib.rs
+++ b/src/libserialize/lib.rs
@@ -13,6 +13,7 @@ Core encoding and decoding interfaces.
 #![feature(specialization)]
 #![feature(never_type)]
 #![feature(nll)]
+#![feature(associated_type_bounds)]
 #![cfg_attr(test, feature(test))]
 
 pub use self::serialize::{Decoder, Encoder, Decodable, Encodable};