Apply Tyler's suggestions from code review

Co-authored-by: Tyler Mandry <[email protected]>

Author: cuviper

posts/2021-10-21-Rust-1.56.0.md

@@ -32,12 +32,12 @@ avoid breaking some corner cases in existing code. See the new chapters of the
 edition guide below for more details on each new feature and guidance for
 migration.
 
-* [Disjoint capture in closures](https://doc.rust-lang.org/edition-guide/rust-2021/disjoint-capture-in-closures.html) rather than always capturing whole identifiers.
-* [`IntoIterator` for arrays](https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html) now includes `array.into_iter()` calls.
+* [Disjoint capture](https://doc.rust-lang.org/edition-guide/rust-2021/disjoint-capture-in-closures.html): closures now capture individual named fields rather than always capturing whole identifiers.
+* [`IntoIterator` for arrays](https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html): `array.into_iter()` now iterates over items by value instead of by reference.
 * [Or patterns in macro-rules](https://doc.rust-lang.org/edition-guide/rust-2021/or-patterns-macro-rules.html) now match top-level `A|B` in `:pat`.
 * [Default Cargo feature resolver](https://doc.rust-lang.org/edition-guide/rust-2021/default-cargo-resolver.html) is now version 2.
-* [Additions to the prelude](https://doc.rust-lang.org/edition-guide/rust-2021/prelude.html): `TryInto`, `TryFrom`, and `FromIterator`.
-* [Panic macro consistency](https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html) now always uses `format_args!(..)`, just like `println!()`.
+* [Additions to the prelude](https://doc.rust-lang.org/edition-guide/rust-2021/prelude.html): `TryInto`, `TryFrom`, and `FromIterator` are now in scope by default.
+* [Panic macros](https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html) now always expect format strings, just like `println!()`.
 * [Reserving syntax](https://doc.rust-lang.org/edition-guide/rust-2021/reserving-syntax.html) for `ident#`, `ident"..."`, and `ident'...'`.
 * [Warnings promoted to errors](https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html): `bare_trait_objects` and `ellipsis_inclusive_range_patterns`.
 
@@ -52,11 +52,14 @@ let's look at a quick example:
 // 2015 or 2018 edition code
 let a = SomeStruct::new();
 
-drop(a.x); // Move out of one field of the struct
+// Move out of one field of the struct
+drop(a.x);
 
-println!("{}", a.y); // Ok: Still use another field of the struct
+// Ok: Still use another field of the struct
+println!("{}", a.y);
 
-let c = || println!("{}", a.y); // Error: Tries to capture all of `a`
+// Error: Before 2021 edition, tries to capture all of `a`
+let c = || println!("{}", a.y);
 c();
 ```
 
@@ -174,6 +177,6 @@ and [Clippy](https://github.com/rust-lang/rust-clippy/blob/master/CHANGELOG.md#r
 
 ### Contributors to 1.56.0
 
-Many people came together to create Rust 1.56.0.
+Many people came together to create Rust 1.56.0 and the 2021 edition.
 We couldn't have done it without all of you.
 [Thanks!](https://thanks.rust-lang.org/rust/1.56.0/)