Auto merge of #38369 - aturon:stab-1.15, r=alexcrichton

Library stabilizations/deprecations for 1.15 release

Stabilized:

- `std::iter::Iterator::{min_by, max_by}`
- `std::os::*::fs::FileExt`
- `std::sync::atomic::Atomic*::{get_mut, into_inner}`
- `std::vec::IntoIter::{as_slice, as_mut_slice}`
- `std::sync::mpsc::Receiver::try_iter`
- `std::os::unix::process::CommandExt::before_exec`
- `std::rc::Rc::{strong_count, weak_count}`
- `std::sync::Arc::{strong_count, weak_count}`
- `std::char::{encode_utf8, encode_utf16}`
- `std::cell::Ref::clone`
- `std::io::Take::into_inner`

Deprecated:

- `std::rc::Rc::{would_unwrap, is_unique}`
- `std::cell::RefCell::borrow_state`

Closes #23755
Closes #27733
Closes #27746
Closes #27784
Closes #28356
Closes #31398
Closes #34931
Closes #35601
Closes #35603
Closes #35918
Closes #36105

1 files changed, 3 insertions, 3 deletions

diff --git a/src/libstd/sync/mpsc/mod.rs b/src/libstd/sync/mpsc/mod.rs
index 9f51d3e87f3..63745388eb6 100644
--- a/src/libstd/sync/mpsc/mod.rs
+++ b/src/libstd/sync/mpsc/mod.rs
@@ -316,7 +316,7 @@ pub struct Iter<'a, T: 'a> {
 ///
 /// This Iterator will never block the caller in order to wait for data to
 /// become available. Instead, it will return `None`.
-#[unstable(feature = "receiver_try_iter", issue = "34931")]
+#[stable(feature = "receiver_try_iter", since = "1.15.0")]
 pub struct TryIter<'a, T: 'a> {
     rx: &'a Receiver<T>
 }
@@ -1008,7 +1008,7 @@ impl<T> Receiver<T> {
     /// It will return `None` if there are no more pending values or if the
     /// channel has hung up. The iterator will never `panic!` or block the
     /// user by waiting for values.
-    #[unstable(feature = "receiver_try_iter", issue = "34931")]
+    #[stable(feature = "receiver_try_iter", since = "1.15.0")]
     pub fn try_iter(&self) -> TryIter<T> {
         TryIter { rx: self }
     }
@@ -1108,7 +1108,7 @@ impl<'a, T> Iterator for Iter<'a, T> {
     fn next(&mut self) -> Option<T> { self.rx.recv().ok() }
 }
 
-#[unstable(feature = "receiver_try_iter", issue = "34931")]
+#[stable(feature = "receiver_try_iter", since = "1.15.0")]
 impl<'a, T> Iterator for TryIter<'a, T> {
     type Item = T;