Auto merge of #69555 - Centril:rollup-e53lxz4, r=Centril

Rollup of 10 pull requests

Successful merges:

 - #68989 (Update RELEASES.md for 1.42.0)
 - #69340 (instantiate_value_path: on `SelfCtor`, avoid unconstrained tyvars)
 - #69384 (parser: `token` -> `normalized_token`, `nonnormalized_token` -> `token`)
 - #69452 (typeck: use `Pattern` obligation cause more for better diagnostics)
 - #69481 (use char instead of &str for single char patterns)
 - #69522 (error_derive_forbidden_on_non_adt: be more graceful)
 - #69538 (Stabilize `boxed_slice_try_from`)
 - #69539 (late resolve, visit_fn: bail early if there's no body.)
 - #69541 (Remove unneeded calls to format!())
 - #69547 (remove redundant clones, references to operands, explicit boolean comparisons and filter(x).next() calls.)

Failed merges:

r? @ghost

3 files changed, 3 insertions, 3 deletions

diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs
index 3ac4bd82a3a..81b0e9817d2 100644
--- a/src/liballoc/boxed.rs
+++ b/src/liballoc/boxed.rs
@@ -825,7 +825,7 @@ impl From<Box<str>> for Box<[u8]> {
     }
 }
 
-#[unstable(feature = "boxed_slice_try_from", issue = "none")]
+#[stable(feature = "boxed_slice_try_from", since = "1.43.0")]
 impl<T, const N: usize> TryFrom<Box<[T]>> for Box<[T; N]>
 where
     [T; N]: LengthAtMost32,
diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index 9dc5447397f..6ee128f4fa1 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -1453,7 +1453,7 @@ impl<T> From<Vec<T>> for Rc<[T]> {
     }
 }
 
-#[unstable(feature = "boxed_slice_try_from", issue = "none")]
+#[stable(feature = "boxed_slice_try_from", since = "1.43.0")]
 impl<T, const N: usize> TryFrom<Rc<[T]>> for Rc<[T; N]>
 where
     [T; N]: LengthAtMost32,
diff --git a/src/liballoc/sync.rs b/src/liballoc/sync.rs
index fd285242d5b..9bd708c0f59 100644
--- a/src/liballoc/sync.rs
+++ b/src/liballoc/sync.rs
@@ -2002,7 +2002,7 @@ impl<T> From<Vec<T>> for Arc<[T]> {
     }
 }
 
-#[unstable(feature = "boxed_slice_try_from", issue = "none")]
+#[stable(feature = "boxed_slice_try_from", since = "1.43.0")]
 impl<T, const N: usize> TryFrom<Arc<[T]>> for Arc<[T; N]>
 where
     [T; N]: LengthAtMost32,