collections: Avoid unstable code in examples for String

Prefer String::from over from_str; String::from_str is unstable while
String::from is stable. Promote the latter by using it in examples.

Simply migrating unstable function to the closest alternative.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index 88c5c38172a..1e773b7f206 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -32,7 +32,7 @@
 //! and have the `Owner` remain allocated as long as any `Gadget` points at it.
 //!
 //! ```rust
-//! # #![feature(alloc, collections)]
+//! # #![feature(alloc)]
 //! use std::rc::Rc;
 //!
 //! struct Owner {
@@ -49,7 +49,7 @@
 //! fn main() {
 //!     // Create a reference counted Owner.
 //!     let gadget_owner : Rc<Owner> = Rc::new(
-//!             Owner { name: String::from_str("Gadget Man") }
+//!             Owner { name: String::from("Gadget Man") }
 //!     );
 //!
 //!     // Create Gadgets belonging to gadget_owner. To increment the reference