Auto merge of #57542 - Centril:rollup, r=Centril

Rollup of 26 pull requests

Successful merges:

 - #56425 (Redo the docs for Vec::set_len)
 - #56906 (Issue #56905)
 - #57042 (Don't call `FieldPlacement::count` when count is too large)
 - #57175 (Stabilize `let` bindings and destructuring in constants and const fn)
 - #57192 (Change std::error::Error trait documentation to talk about `source` instead of `cause`)
 - #57296 (Fixed the link to the ? operator)
 - #57368 (Use CMAKE_{C,CXX}_COMPILER_LAUNCHER for ccache)
 - #57400 (Rustdoc: update Source Serif Pro and replace Heuristica italic)
 - #57417 (rustdoc: use text-based doctest parsing if a macro is wrapping main)
 - #57433 (Add link destination for `read-ownership`)
 - #57434 (Remove `CrateNum::Invalid`.)
 - #57441 (Supporting backtrace for x86_64-fortanix-unknown-sgx.)
 - #57450 (actually take a slice in this example)
 - #57459 (Reference tracking issue for inherent associated types in diagnostic)
 - #57463 (docs: Fix some 'second-edition' links)
 - #57466 (Remove outdated comment)
 - #57493 (use structured suggestion when casting a reference)
 - #57498 (make note of one more normalization that Paths do)
 - #57499 (note that FromStr does not work for borrowed types)
 - #57505 (Remove submodule step from README)
 - #57510 (Add a profiles section to the manifest)
 - #57511 (Fix undefined behavior)
 - #57519 (Correct RELEASES.md for 1.32.0)
 - #57522 (don't unwrap unexpected tokens in `format!`)
 - #57530 (Fixing a typographical error.)
 - #57535 (Stabilise irrefutable if-let and while-let patterns)

Failed merges:

r? @ghost

1 files changed, 2 insertions, 3 deletions

diff --git a/src/libstd/primitive_docs.rs b/src/libstd/primitive_docs.rs
index 475c9b4aeaa..c2751508ce0 100644
--- a/src/libstd/primitive_docs.rs
+++ b/src/libstd/primitive_docs.rs
@@ -550,7 +550,6 @@ mod prim_array { }
 #[doc(alias = "[")]
 #[doc(alias = "]")]
 #[doc(alias = "[]")]
-//
 /// A dynamically-sized view into a contiguous sequence, `[T]`.
 ///
 /// *[See also the `std::slice` module](slice/index.html).*
@@ -572,11 +571,11 @@ mod prim_array { }
 /// points to:
 ///
 /// ```
-/// let x = &mut [1, 2, 3];
+/// let mut x = [1, 2, 3];
+/// let x = &mut x[..]; // Take a full slice of `x`.
 /// x[1] = 7;
 /// assert_eq!(x, &[1, 7, 3]);
 /// ```
-///
 #[stable(feature = "rust1", since = "1.0.0")]
 mod prim_slice { }