Mark AsRef impls for String's Drain as stable.

m-ou-se · m-ou-se · commit f2a32909e064 · 2020-09-09T19:10:06.000+02:00
Trait implementations effectively can't be #[unstable].
diff --git a/library/alloc/src/string.rs b/library/alloc/src/string.rs
@@ -2481,14 +2481,14 @@ impl<'a> Drain<'a> {
     }
 }
 
-#[unstable(feature = "string_drain_as_str", issue = "none")]
+#[stable(feature = "string_drain_as_ref", since = "1.48.0")]
 impl<'a> AsRef<str> for Drain<'a> {
     fn as_ref(&self) -> &str {
         self.as_str()
     }
 }
 
-#[unstable(feature = "string_drain_as_str", issue = "none")]
+#[stable(feature = "string_drain_as_ref", since = "1.48.0")]
 impl<'a> AsRef<[u8]> for Drain<'a> {
     fn as_ref(&self) -> &[u8] {
         self.as_str().as_bytes()

Original file line number	Diff line number	Diff line change
`@@ -2481,14 +2481,14 @@ impl<'a> Drain<'a> {`
`2481`	`2481`	`}`
`2482`	`2482`	`}`
`2483`	`2483`
`2484`		`-#[unstable(feature = "string_drain_as_str", issue = "none")]`
	`2484`	`+#[stable(feature = "string_drain_as_ref", since = "1.48.0")]`
`2485`	`2485`	`impl<'a> AsRef<str> for Drain<'a> {`
`2486`	`2486`	`fn as_ref(&self) -> &str {`
`2487`	`2487`	`self.as_str()`
`2488`	`2488`	`}`
`2489`	`2489`	`}`
`2490`	`2490`
`2491`		`-#[unstable(feature = "string_drain_as_str", issue = "none")]`
	`2491`	`+#[stable(feature = "string_drain_as_ref", since = "1.48.0")]`
`2492`	`2492`	`impl<'a> AsRef<[u8]> for Drain<'a> {`
`2493`	`2493`	`fn as_ref(&self) -> &[u8] {`
`2494`	`2494`	`self.as_str().as_bytes()`