Provide raw &str access from Decoder

1 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_serialize/src/serialize.rs b/compiler/rustc_serialize/src/serialize.rs
index a012be2857e..fbbd13657ba 100644
--- a/compiler/rustc_serialize/src/serialize.rs
+++ b/compiler/rustc_serialize/src/serialize.rs
@@ -198,7 +198,7 @@ pub trait Decoder {
     fn read_f64(&mut self) -> f64;
     fn read_f32(&mut self) -> f32;
     fn read_char(&mut self) -> char;
-    fn read_str(&mut self) -> Cow<'_, str>;
+    fn read_str(&mut self) -> &str;
     fn read_raw_bytes_into(&mut self, s: &mut [u8]);
 }
 
@@ -313,7 +313,7 @@ impl<S: Encoder> Encodable<S> for String {
 
 impl<D: Decoder> Decodable<D> for String {
     fn decode(d: &mut D) -> String {
-        d.read_str().into_owned()
+        d.read_str().to_owned()
     }
 }