From f55ac5d8fa1d070edc2374b1bcfdbd83bf66f39d Mon Sep 17 00:00:00 2001
From: Yuri Astrakhan <YuriAstrakhan@gmail.com>
Date: Thu, 13 Oct 2022 15:01:58 -0400
Subject: [PATCH] Inline all format arguments

The inlined format arguments are a bit easier to understand,
especially for those familiar with the other languages (python, js).
---
 Cargo.toml                                                | 2 +-
 .../listing-04-01/src/main.rs                             | 2 +-
 .../listing-04-03/src/main.rs                             | 4 ++--
 .../listing-04-05/src/main.rs                             | 2 +-
 .../no-listing-01-can-mutate-string/src/main.rs           | 4 ++--
 .../no-listing-04-cant-use-after-move/src/main.rs         | 2 +-
 .../no-listing-05-clone/src/main.rs                       | 2 +-
 .../no-listing-06-copy/src/main.rs                        | 2 +-
 .../no-listing-07-reference/src/main.rs                   | 2 +-
 .../no-listing-08-reference-with-annotations/src/main.rs  | 2 +-
 .../no-listing-13-reference-scope-ends/src/main.rs        | 4 ++--
 .../no-listing-19-slice-error/src/main.rs                 | 2 +-
 .../listing-05-12/src/main.rs                             | 2 +-
 .../output-only-02-pretty-debug/src/main.rs               | 2 +-
 .../listing-06-06/src/main.rs                             | 2 +-
 .../no-listing-09-variable-in-pattern/src/main.rs         | 2 +-
 .../no-listing-12-if-let/src/main.rs                      | 2 +-
 .../no-listing-13-count-and-announce-match/src/main.rs    | 2 +-
 .../src/main.rs                                           | 2 +-
 .../quick-reference-example/src/main.rs                   | 2 +-
 .../ch08-common-collections/listing-08-23/src/main.rs     | 2 +-
 .../ch08-common-collections/listing-08-24/src/main.rs     | 2 +-
 .../ch08-common-collections/listing-08-25/src/main.rs     | 2 +-
 listings/ch09-error-handling/listing-09-04/src/main.rs    | 2 +-
 listings/ch09-error-handling/listing-09-05/src/main.rs    | 4 ++--
 listings/ch09-error-handling/listing-09-13/src/main.rs    | 2 +-
 .../listing-10-01/src/main.rs                             | 2 +-
 .../listing-10-02/src/main.rs                             | 4 ++--
 .../listing-10-03/src/main.rs                             | 4 ++--
 .../listing-10-04/src/main.rs                             | 4 ++--
 .../listing-10-05/src/main.rs                             | 4 ++--
 .../listing-10-16/src/main.rs                             | 2 +-
 .../listing-10-17/src/main.rs                             | 2 +-
 .../listing-10-18/src/main.rs                             | 2 +-
 .../listing-10-19/src/main.rs                             | 2 +-
 .../listing-10-20/src/main.rs                             | 2 +-
 .../listing-10-21/src/main.rs                             | 2 +-
 .../listing-10-22/src/main.rs                             | 2 +-
 .../listing-10-23/output.txt                              | 4 ++--
 .../listing-10-23/src/main.rs                             | 2 +-
 .../src/main.rs                                           | 2 +-
 .../no-listing-09-unrelated-lifetime/src/main.rs          | 2 +-
 .../no-listing-10-lifetimes-on-methods/src/main.rs        | 2 +-
 .../src/main.rs                                           | 4 ++--
 .../ch11-writing-automated-tests/listing-11-08/src/lib.rs | 2 +-
 .../ch11-writing-automated-tests/listing-11-10/src/lib.rs | 2 +-
 .../no-listing-05-greeter/src/lib.rs                      | 2 +-
 .../no-listing-08-guess-with-bug/src/lib.rs               | 2 +-
 .../output-only-01-show-output/src/lib.rs                 | 2 +-
 listings/ch12-an-io-project/listing-12-02/src/main.rs     | 4 ++--
 listings/ch12-an-io-project/listing-12-03/src/main.rs     | 4 ++--
 listings/ch12-an-io-project/listing-12-04/src/main.rs     | 4 ++--
 listings/ch12-an-io-project/listing-12-05/src/main.rs     | 4 ++--
 .../ch13-functional-features/listing-13-04/src/main.rs    | 8 ++++----
 .../ch13-functional-features/listing-13-05/src/main.rs    | 4 ++--
 .../ch13-functional-features/listing-13-06/src/main.rs    | 4 ++--
 .../ch13-functional-features/listing-13-07/src/main.rs    | 2 +-
 .../ch13-functional-features/listing-13-08/src/main.rs    | 2 +-
 .../ch13-functional-features/listing-13-09/src/main.rs    | 2 +-
 .../ch13-functional-features/listing-13-11/src/main.rs    | 2 +-
 listings/ch15-smart-pointers/listing-15-01/src/main.rs    | 2 +-
 listings/ch15-smart-pointers/listing-15-24/src/main.rs    | 6 +++---
 .../ch16-fearless-concurrency/listing-16-01/src/main.rs   | 4 ++--
 .../ch16-fearless-concurrency/listing-16-02/src/main.rs   | 4 ++--
 .../ch16-fearless-concurrency/listing-16-03/output.txt    | 6 +++---
 .../ch16-fearless-concurrency/listing-16-03/src/main.rs   | 2 +-
 .../ch16-fearless-concurrency/listing-16-04/src/main.rs   | 2 +-
 .../ch16-fearless-concurrency/listing-16-05/src/main.rs   | 2 +-
 .../ch16-fearless-concurrency/listing-16-08/src/main.rs   | 2 +-
 .../ch16-fearless-concurrency/listing-16-09/output.txt    | 4 ++--
 .../ch16-fearless-concurrency/listing-16-09/src/main.rs   | 4 ++--
 .../ch16-fearless-concurrency/listing-16-10/src/main.rs   | 2 +-
 .../ch16-fearless-concurrency/listing-16-11/src/main.rs   | 2 +-
 .../ch16-fearless-concurrency/listing-16-12/src/main.rs   | 2 +-
 .../no-listing-01-join-too-early/src/main.rs              | 4 ++--
 .../output-only-01-move-drop/output.txt                   | 4 ++--
 .../output-only-01-move-drop/src/main.rs                  | 2 +-
 .../ch18-patterns-and-matching/listing-18-02/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-03/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-07/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-09/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-10/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-11/src/main.rs  | 4 ++--
 .../ch18-patterns-and-matching/listing-18-15/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-17/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-18/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-21/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-22/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-23/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-25/src/main.rs  | 2 +-
 .../ch18-patterns-and-matching/listing-18-26/src/main.rs  | 4 ++--
 .../ch18-patterns-and-matching/listing-18-27/src/main.rs  | 4 ++--
 .../ch18-patterns-and-matching/listing-18-29/src/main.rs  | 4 ++--
 listings/ch19-advanced-features/listing-19-09/src/main.rs | 2 +-
 listings/ch19-advanced-features/listing-19-10/src/main.rs | 2 +-
 listings/ch19-advanced-features/listing-19-22/src/main.rs | 2 +-
 listings/ch19-advanced-features/listing-19-23/src/main.rs | 2 +-
 listings/ch19-advanced-features/listing-19-27/src/main.rs | 2 +-
 .../no-listing-02-impl-outlineprint-for-point/src/main.rs | 2 +-
 .../no-listing-03-impl-display-for-point/src/main.rs      | 2 +-
 listings/ch20-web-server/listing-20-02/src/main.rs        | 2 +-
 src/ch09-02-recoverable-errors-with-result.md             | 4 ++--
 tools/doc-to-md.sh                                        | 2 +-
 tools/src/bin/link2print.rs                               | 4 ++--
 104 files changed, 139 insertions(+), 139 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index c59425f920..60bd20b0fd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "rust-book"
 version = "0.0.1"
 description = "The Rust Book"
-edition = "2018"
+edition = "2021"
 
 [[bin]]
 name = "concat_chapters"
diff --git a/listings/ch04-understanding-ownership/listing-04-01/src/main.rs b/listings/ch04-understanding-ownership/listing-04-01/src/main.rs
index 148ad84c97..ebcd3691be 100644
--- a/listings/ch04-understanding-ownership/listing-04-01/src/main.rs
+++ b/listings/ch04-understanding-ownership/listing-04-01/src/main.rs
@@ -6,4 +6,4 @@ fn main() {
         // do stuff with s
     }                      // this scope is now over, and s is no longer valid
     // ANCHOR_END: here
-}
\ No newline at end of file
+}
diff --git a/listings/ch04-understanding-ownership/listing-04-03/src/main.rs b/listings/ch04-understanding-ownership/listing-04-03/src/main.rs
index b001cc5f4a..edf51a947d 100644
--- a/listings/ch04-understanding-ownership/listing-04-03/src/main.rs
+++ b/listings/ch04-understanding-ownership/listing-04-03/src/main.rs
@@ -14,10 +14,10 @@ fn main() {
   // special happens.
 
 fn takes_ownership(some_string: String) { // some_string comes into scope
-    println!("{}", some_string);
+    println!("{some_string}");
 } // Here, some_string goes out of scope and `drop` is called. The backing
   // memory is freed.
 
 fn makes_copy(some_integer: i32) { // some_integer comes into scope
-    println!("{}", some_integer);
+    println!("{some_integer}");
 } // Here, some_integer goes out of scope. Nothing special happens.
diff --git a/listings/ch04-understanding-ownership/listing-04-05/src/main.rs b/listings/ch04-understanding-ownership/listing-04-05/src/main.rs
index 22aee1419e..2782483a77 100644
--- a/listings/ch04-understanding-ownership/listing-04-05/src/main.rs
+++ b/listings/ch04-understanding-ownership/listing-04-05/src/main.rs
@@ -3,7 +3,7 @@ fn main() {
 
     let (s2, len) = calculate_length(s1);
 
-    println!("The length of '{}' is {}.", s2, len);
+    println!("The length of '{s2}' is {len}.");
 }
 
 fn calculate_length(s: String) -> (String, usize) {
diff --git a/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/src/main.rs b/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/src/main.rs
index b68f0f1e78..15bc9d9220 100644
--- a/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/src/main.rs
+++ b/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/src/main.rs
@@ -4,6 +4,6 @@ fn main() {
 
     s.push_str(", world!"); // push_str() appends a literal to a String
 
-    println!("{}", s); // This will print `hello, world!`
-                       // ANCHOR_END: here
+    println!("{s}"); // This will print `hello, world!`
+                     // ANCHOR_END: here
 }
diff --git a/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/src/main.rs b/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/src/main.rs
index d0b9f18795..e35f6d8034 100644
--- a/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/src/main.rs
+++ b/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/src/main.rs
@@ -3,6 +3,6 @@ fn main() {
     let s1 = String::from("hello");
     let s2 = s1;
 
-    println!("{}, world!", s1);
+    println!("{s1}, world!");
     // ANCHOR_END: here
 }
diff --git a/listings/ch04-understanding-ownership/no-listing-05-clone/src/main.rs b/listings/ch04-understanding-ownership/no-listing-05-clone/src/main.rs
index 4e61cc1a16..0b65e5f611 100644
--- a/listings/ch04-understanding-ownership/no-listing-05-clone/src/main.rs
+++ b/listings/ch04-understanding-ownership/no-listing-05-clone/src/main.rs
@@ -3,6 +3,6 @@ fn main() {
     let s1 = String::from("hello");
     let s2 = s1.clone();
 
-    println!("s1 = {}, s2 = {}", s1, s2);
+    println!("s1 = {s1}, s2 = {s2}");
     // ANCHOR_END: here
 }
diff --git a/listings/ch04-understanding-ownership/no-listing-06-copy/src/main.rs b/listings/ch04-understanding-ownership/no-listing-06-copy/src/main.rs
index 63a1fae248..b6fd2445d0 100644
--- a/listings/ch04-understanding-ownership/no-listing-06-copy/src/main.rs
+++ b/listings/ch04-understanding-ownership/no-listing-06-copy/src/main.rs
@@ -3,6 +3,6 @@ fn main() {
     let x = 5;
     let y = x;
 
-    println!("x = {}, y = {}", x, y);
+    println!("x = {x}, y = {y}");
     // ANCHOR_END: here
 }
diff --git a/listings/ch04-understanding-ownership/no-listing-07-reference/src/main.rs b/listings/ch04-understanding-ownership/no-listing-07-reference/src/main.rs
index fd32a5fc95..6f6d5fb239 100644
--- a/listings/ch04-understanding-ownership/no-listing-07-reference/src/main.rs
+++ b/listings/ch04-understanding-ownership/no-listing-07-reference/src/main.rs
@@ -6,7 +6,7 @@ fn main() {
     let len = calculate_length(&s1);
     // ANCHOR_END: here
 
-    println!("The length of '{}' is {}.", s1, len);
+    println!("The length of '{s1}' is {len}.");
 }
 
 fn calculate_length(s: &String) -> usize {
diff --git a/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/src/main.rs b/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/src/main.rs
index 6686a801c0..964fd233f7 100644
--- a/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/src/main.rs
+++ b/listings/ch04-understanding-ownership/no-listing-08-reference-with-annotations/src/main.rs
@@ -3,7 +3,7 @@ fn main() {
 
     let len = calculate_length(&s1);
 
-    println!("The length of '{}' is {}.", s1, len);
+    println!("The length of '{s1}' is {len}.");
 }
 
 // ANCHOR: here
diff --git a/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs b/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs
index 8619449669..c005414d8e 100644
--- a/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs
+++ b/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs
@@ -4,10 +4,10 @@ fn main() {
 
     let r1 = &s; // no problem
     let r2 = &s; // no problem
-    println!("{} and {}", r1, r2);
+    println!("{r1} and {r2}");
     // variables r1 and r2 will not be used after this point
 
     let r3 = &mut s; // no problem
-    println!("{}", r3);
+    println!("{r3}");
     // ANCHOR_END: here
 }
diff --git a/listings/ch04-understanding-ownership/no-listing-19-slice-error/src/main.rs b/listings/ch04-understanding-ownership/no-listing-19-slice-error/src/main.rs
index 99e04018d2..b23e45f435 100644
--- a/listings/ch04-understanding-ownership/no-listing-19-slice-error/src/main.rs
+++ b/listings/ch04-understanding-ownership/no-listing-19-slice-error/src/main.rs
@@ -18,6 +18,6 @@ fn main() {
 
     s.clear(); // error!
 
-    println!("the first word is: {}", word);
+    println!("the first word is: {word}");
 }
 // ANCHOR_END: here
diff --git a/listings/ch05-using-structs-to-structure-related-data/listing-05-12/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/listing-05-12/src/main.rs
index 2ffc4b8e7b..67e0b92a47 100644
--- a/listings/ch05-using-structs-to-structure-related-data/listing-05-12/src/main.rs
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-12/src/main.rs
@@ -10,5 +10,5 @@ fn main() {
         height: 50,
     };
 
-    println!("rect1 is {:?}", rect1);
+    println!("rect1 is {rect1:?}");
 }
diff --git a/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/src/main.rs b/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/src/main.rs
index 84e32aee49..f763b50d3b 100644
--- a/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/src/main.rs
+++ b/listings/ch05-using-structs-to-structure-related-data/output-only-02-pretty-debug/src/main.rs
@@ -10,5 +10,5 @@ fn main() {
         height: 50,
     };
 
-    println!("rect1 is {:#?}", rect1);
+    println!("rect1 is {rect1:#?}");
 }
diff --git a/listings/ch06-enums-and-pattern-matching/listing-06-06/src/main.rs b/listings/ch06-enums-and-pattern-matching/listing-06-06/src/main.rs
index dc2bffb911..0a037517ab 100644
--- a/listings/ch06-enums-and-pattern-matching/listing-06-06/src/main.rs
+++ b/listings/ch06-enums-and-pattern-matching/listing-06-06/src/main.rs
@@ -2,7 +2,7 @@ fn main() {
     // ANCHOR: here
     let config_max = Some(3u8);
     match config_max {
-        Some(max) => println!("The maximum is configured to be {}", max),
+        Some(max) => println!("The maximum is configured to be {max}"),
         _ => (),
     }
     // ANCHOR_END: here
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/src/main.rs
index a4d500c11c..298215d405 100644
--- a/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/src/main.rs
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-09-variable-in-pattern/src/main.rs
@@ -19,7 +19,7 @@ fn value_in_cents(coin: Coin) -> u8 {
         Coin::Nickel => 5,
         Coin::Dime => 10,
         Coin::Quarter(state) => {
-            println!("State quarter from {:?}!", state);
+            println!("State quarter from {state:?}!");
             25
         }
     }
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/src/main.rs
index 735086d4ed..7d7254ea0f 100644
--- a/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/src/main.rs
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/src/main.rs
@@ -2,7 +2,7 @@ fn main() {
     // ANCHOR: here
     let config_max = Some(3u8);
     if let Some(max) = config_max {
-        println!("The maximum is configured to be {}", max);
+        println!("The maximum is configured to be {max}");
     }
     // ANCHOR_END: here
 }
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/src/main.rs
index 12c4c0fec1..d0d7d80271 100644
--- a/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/src/main.rs
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-13-count-and-announce-match/src/main.rs
@@ -17,7 +17,7 @@ fn main() {
     // ANCHOR: here
     let mut count = 0;
     match coin {
-        Coin::Quarter(state) => println!("State quarter from {:?}!", state),
+        Coin::Quarter(state) => println!("State quarter from {state:?}!"),
         _ => count += 1,
     }
     // ANCHOR_END: here
diff --git a/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/src/main.rs
index ba7eda27b4..3bb3630350 100644
--- a/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/src/main.rs
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-14-count-and-announce-if-let-else/src/main.rs
@@ -17,7 +17,7 @@ fn main() {
     // ANCHOR: here
     let mut count = 0;
     if let Coin::Quarter(state) = coin {
-        println!("State quarter from {:?}!", state);
+        println!("State quarter from {state:?}!");
     } else {
         count += 1;
     }
diff --git a/listings/ch07-managing-growing-projects/quick-reference-example/src/main.rs b/listings/ch07-managing-growing-projects/quick-reference-example/src/main.rs
index 7a024a9a0d..0d9a0ca92f 100644
--- a/listings/ch07-managing-growing-projects/quick-reference-example/src/main.rs
+++ b/listings/ch07-managing-growing-projects/quick-reference-example/src/main.rs
@@ -4,5 +4,5 @@ pub mod garden;
 
 fn main() {
     let plant = Asparagus {};
-    println!("I'm growing {:?}!", plant);
+    println!("I'm growing {plant:?}!");
 }
diff --git a/listings/ch08-common-collections/listing-08-23/src/main.rs b/listings/ch08-common-collections/listing-08-23/src/main.rs
index e8684cf2b6..29025b4177 100644
--- a/listings/ch08-common-collections/listing-08-23/src/main.rs
+++ b/listings/ch08-common-collections/listing-08-23/src/main.rs
@@ -7,6 +7,6 @@ fn main() {
     scores.insert(String::from("Blue"), 10);
     scores.insert(String::from("Blue"), 25);
 
-    println!("{:?}", scores);
+    println!("{scores:?}");
     // ANCHOR_END: here
 }
diff --git a/listings/ch08-common-collections/listing-08-24/src/main.rs b/listings/ch08-common-collections/listing-08-24/src/main.rs
index 3ad97b57af..013895632e 100644
--- a/listings/ch08-common-collections/listing-08-24/src/main.rs
+++ b/listings/ch08-common-collections/listing-08-24/src/main.rs
@@ -8,6 +8,6 @@ fn main() {
     scores.entry(String::from("Yellow")).or_insert(50);
     scores.entry(String::from("Blue")).or_insert(50);
 
-    println!("{:?}", scores);
+    println!("{scores:?}");
     // ANCHOR_END: here
 }
diff --git a/listings/ch08-common-collections/listing-08-25/src/main.rs b/listings/ch08-common-collections/listing-08-25/src/main.rs
index f3f6aa166d..84dd1cd4ba 100644
--- a/listings/ch08-common-collections/listing-08-25/src/main.rs
+++ b/listings/ch08-common-collections/listing-08-25/src/main.rs
@@ -11,6 +11,6 @@ fn main() {
         *count += 1;
     }
 
-    println!("{:?}", map);
+    println!("{map:?}");
     // ANCHOR_END: here
 }
diff --git a/listings/ch09-error-handling/listing-09-04/src/main.rs b/listings/ch09-error-handling/listing-09-04/src/main.rs
index 69da109fe4..832f57f0e6 100644
--- a/listings/ch09-error-handling/listing-09-04/src/main.rs
+++ b/listings/ch09-error-handling/listing-09-04/src/main.rs
@@ -5,6 +5,6 @@ fn main() {
 
     let greeting_file = match greeting_file_result {
         Ok(file) => file,
-        Err(error) => panic!("Problem opening the file: {:?}", error),
+        Err(error) => panic!("Problem opening the file: {error:?}"),
     };
 }
diff --git a/listings/ch09-error-handling/listing-09-05/src/main.rs b/listings/ch09-error-handling/listing-09-05/src/main.rs
index 83ea01044f..e0bc55c3f1 100644
--- a/listings/ch09-error-handling/listing-09-05/src/main.rs
+++ b/listings/ch09-error-handling/listing-09-05/src/main.rs
@@ -9,10 +9,10 @@ fn main() {
         Err(error) => match error.kind() {
             ErrorKind::NotFound => match File::create("hello.txt") {
                 Ok(fc) => fc,
-                Err(e) => panic!("Problem creating the file: {:?}", e),
+                Err(e) => panic!("Problem creating the file: {e:?}"),
             },
             other_error => {
-                panic!("Problem opening the file: {:?}", other_error);
+                panic!("Problem opening the file: {other_error:?}");
             }
         },
     };
diff --git a/listings/ch09-error-handling/listing-09-13/src/main.rs b/listings/ch09-error-handling/listing-09-13/src/main.rs
index 9e07c1ee25..42b7d32ef6 100644
--- a/listings/ch09-error-handling/listing-09-13/src/main.rs
+++ b/listings/ch09-error-handling/listing-09-13/src/main.rs
@@ -10,7 +10,7 @@ pub struct Guess {
 impl Guess {
     pub fn new(value: i32) -> Guess {
         if value < 1 || value > 100 {
-            panic!("Guess value must be between 1 and 100, got {}.", value);
+            panic!("Guess value must be between 1 and 100, got {value}.");
         }
 
         Guess { value }
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/src/main.rs
index a4dba7ed43..c9e9bbbd21 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-01/src/main.rs
@@ -10,7 +10,7 @@ fn main() {
         }
     }
 
-    println!("The largest number is {}", largest);
+    println!("The largest number is {largest}");
     // ANCHOR_END: here
     assert_eq!(*largest, 100);
     // ANCHOR: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/src/main.rs
index 8c523a8be3..fd43154a94 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-02/src/main.rs
@@ -9,7 +9,7 @@ fn main() {
         }
     }
 
-    println!("The largest number is {}", largest);
+    println!("The largest number is {largest}");
 
     let number_list = vec![102, 34, 6000, 89, 54, 2, 43, 8];
 
@@ -21,5 +21,5 @@ fn main() {
         }
     }
 
-    println!("The largest number is {}", largest);
+    println!("The largest number is {largest}");
 }
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/src/main.rs
index 899222909c..1878f5aacc 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-03/src/main.rs
@@ -15,7 +15,7 @@ fn main() {
     let number_list = vec![34, 50, 25, 100, 65];
 
     let result = largest(&number_list);
-    println!("The largest number is {}", result);
+    println!("The largest number is {result}");
     // ANCHOR_END: here
     assert_eq!(*result, 100);
     // ANCHOR: here
@@ -23,7 +23,7 @@ fn main() {
     let number_list = vec![102, 34, 6000, 89, 54, 2, 43, 8];
 
     let result = largest(&number_list);
-    println!("The largest number is {}", result);
+    println!("The largest number is {result}");
     // ANCHOR_END: here
     assert_eq!(*result, 6000);
     // ANCHOR: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/src/main.rs
index a47e3f232c..ac3b1f7c1e 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-04/src/main.rs
@@ -27,7 +27,7 @@ fn main() {
     let number_list = vec![34, 50, 25, 100, 65];
 
     let result = largest_i32(&number_list);
-    println!("The largest number is {}", result);
+    println!("The largest number is {result}");
     // ANCHOR_END: here
     assert_eq!(*result, 100);
     // ANCHOR: here
@@ -35,7 +35,7 @@ fn main() {
     let char_list = vec!['y', 'm', 'a', 'q'];
 
     let result = largest_char(&char_list);
-    println!("The largest char is {}", result);
+    println!("The largest char is {result}");
     // ANCHOR_END: here
     assert_eq!(*result, 'y');
     // ANCHOR: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/src/main.rs
index df33743f78..094eb416a7 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/src/main.rs
@@ -14,10 +14,10 @@ fn main() {
     let number_list = vec![34, 50, 25, 100, 65];
 
     let result = largest(&number_list);
-    println!("The largest number is {}", result);
+    println!("The largest number is {result}");
 
     let char_list = vec!['y', 'm', 'a', 'q'];
 
     let result = largest(&char_list);
-    println!("The largest char is {}", result);
+    println!("The largest char is {result}");
 }
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/src/main.rs
index d71134ea09..773340eabc 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/src/main.rs
@@ -6,5 +6,5 @@ fn main() {
         r = &x;
     }
 
-    println!("r: {}", r);
+    println!("r: {r}");
 }
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/src/main.rs
index e8ca92328a..6679bcf31e 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-17/src/main.rs
@@ -6,5 +6,5 @@ fn main() {
         r = &x;           //  |       |
     }                     // -+       |
                           //          |
-    println!("r: {}", r); //          |
+    println!("r: {r}");   //          |
 }                         // ---------+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/src/main.rs
index 09ae3919cd..634ff9391a 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-18/src/main.rs
@@ -3,6 +3,6 @@ fn main() {
                           //           |
     let r = &x;           // --+-- 'a  |
                           //   |       |
-    println!("r: {}", r); //   |       |
+    println!("r: {r}");   //   |       |
                           // --+       |
 }                         // ----------+
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/src/main.rs
index 0f076a71db..8b64cd0008 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-19/src/main.rs
@@ -3,5 +3,5 @@ fn main() {
     let string2 = "xyz";
 
     let result = longest(string1.as_str(), string2);
-    println!("The longest string is {}", result);
+    println!("The longest string is {result}");
 }
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/src/main.rs
index 6af8c9f0da..bf41acd1f1 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/src/main.rs
@@ -3,7 +3,7 @@ fn main() {
     let string2 = "xyz";
 
     let result = longest(string1.as_str(), string2);
-    println!("The longest string is {}", result);
+    println!("The longest string is {result}");
 }
 
 // ANCHOR: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/src/main.rs
index 09c3a0daaa..7668de1340 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-21/src/main.rs
@@ -3,7 +3,7 @@ fn main() {
     let string2 = "xyz";
 
     let result = longest(string1.as_str(), string2);
-    println!("The longest string is {}", result);
+    println!("The longest string is {result}");
 }
 
 // ANCHOR: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/src/main.rs
index 836ec72959..fc9ff296cf 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-22/src/main.rs
@@ -5,7 +5,7 @@ fn main() {
     {
         let string2 = String::from("xyz");
         let result = longest(string1.as_str(), string2.as_str());
-        println!("The longest string is {}", result);
+        println!("The longest string is {result}");
     }
 }
 // ANCHOR_END: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/output.txt b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/output.txt
index 7f31ce02c4..0cf373f8a4 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/output.txt
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/output.txt
@@ -7,8 +7,8 @@ error[E0597]: `string2` does not live long enough
   |                                            ^^^^^^^^^^^^^^^^ borrowed value does not live long enough
 7 |     }
   |     - `string2` dropped here while still borrowed
-8 |     println!("The longest string is {}", result);
-  |                                          ------ borrow later used here
+8 |     println!("The longest string is {result}");
+  |                                      ------ borrow later used here
 
 For more information about this error, try `rustc --explain E0597`.
 error: could not compile `chapter10` due to previous error
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/src/main.rs
index 2a6fa5898f..f2e6338625 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-23/src/main.rs
@@ -6,7 +6,7 @@ fn main() {
         let string2 = String::from("xyz");
         result = longest(string1.as_str(), string2.as_str());
     }
-    println!("The longest string is {}", result);
+    println!("The longest string is {result}");
 }
 // ANCHOR_END: here
 
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/src/main.rs
index d144305cb0..4c35d90e3a 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-08-only-one-reference-with-lifetime/src/main.rs
@@ -3,7 +3,7 @@ fn main() {
     let string2 = "efghijklmnopqrstuvwxyz";
 
     let result = longest(string1.as_str(), string2);
-    println!("The longest string is {}", result);
+    println!("The longest string is {result}");
 }
 
 // ANCHOR: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/src/main.rs
index aca4be0a78..4d596ec434 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/src/main.rs
@@ -3,7 +3,7 @@ fn main() {
     let string2 = "xyz";
 
     let result = longest(string1.as_str(), string2);
-    println!("The longest string is {}", result);
+    println!("The longest string is {result}");
 }
 
 // ANCHOR: here
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/src/main.rs
index 32ad530b51..b8222308d1 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-10-lifetimes-on-methods/src/main.rs
@@ -13,7 +13,7 @@ impl<'a> ImportantExcerpt<'a> {
 // ANCHOR: 3rd
 impl<'a> ImportantExcerpt<'a> {
     fn announce_and_return_part(&self, announcement: &str) -> &str {
-        println!("Attention please: {}", announcement);
+        println!("Attention please: {announcement}");
         self.part
     }
 }
diff --git a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/src/main.rs b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/src/main.rs
index cfafa9a6d3..4b0201fb16 100644
--- a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/src/main.rs
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-11-generics-traits-and-lifetimes/src/main.rs
@@ -7,7 +7,7 @@ fn main() {
         string2,
         "Today is someone's birthday!",
     );
-    println!("The longest string is {}", result);
+    println!("The longest string is {result}");
 }
 
 // ANCHOR: here
@@ -21,7 +21,7 @@ fn longest_with_an_announcement<'a, T>(
 where
     T: Display,
 {
-    println!("Announcement! {}", ann);
+    println!("Announcement! {ann}");
     if x.len() > y.len() {
         x
     } else {
diff --git a/listings/ch11-writing-automated-tests/listing-11-08/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-08/src/lib.rs
index 9391be5b1f..54e447bb93 100644
--- a/listings/ch11-writing-automated-tests/listing-11-08/src/lib.rs
+++ b/listings/ch11-writing-automated-tests/listing-11-08/src/lib.rs
@@ -5,7 +5,7 @@ pub struct Guess {
 impl Guess {
     pub fn new(value: i32) -> Guess {
         if value < 1 || value > 100 {
-            panic!("Guess value must be between 1 and 100, got {}.", value);
+            panic!("Guess value must be between 1 and 100, got {value}.");
         }
 
         Guess { value }
diff --git a/listings/ch11-writing-automated-tests/listing-11-10/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-10/src/lib.rs
index 6fd76ce006..99fc06b8d6 100644
--- a/listings/ch11-writing-automated-tests/listing-11-10/src/lib.rs
+++ b/listings/ch11-writing-automated-tests/listing-11-10/src/lib.rs
@@ -1,5 +1,5 @@
 fn prints_and_returns_10(a: i32) -> i32 {
-    println!("I got the value {}", a);
+    println!("I got the value {a}");
     10
 }
 
diff --git a/listings/ch11-writing-automated-tests/no-listing-05-greeter/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-05-greeter/src/lib.rs
index 3ba3d8819e..433cf148ea 100644
--- a/listings/ch11-writing-automated-tests/no-listing-05-greeter/src/lib.rs
+++ b/listings/ch11-writing-automated-tests/no-listing-05-greeter/src/lib.rs
@@ -1,5 +1,5 @@
 pub fn greeting(name: &str) -> String {
-    format!("Hello {}!", name)
+    format!("Hello {name}!")
 }
 
 #[cfg(test)]
diff --git a/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/src/lib.rs b/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/src/lib.rs
index 32540ba83c..0f962fcd79 100644
--- a/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/src/lib.rs
+++ b/listings/ch11-writing-automated-tests/no-listing-08-guess-with-bug/src/lib.rs
@@ -7,7 +7,7 @@ pub struct Guess {
 impl Guess {
     pub fn new(value: i32) -> Guess {
         if value < 1 {
-            panic!("Guess value must be between 1 and 100, got {}.", value);
+            panic!("Guess value must be between 1 and 100, got {value}.");
         }
 
         Guess { value }
diff --git a/listings/ch11-writing-automated-tests/output-only-01-show-output/src/lib.rs b/listings/ch11-writing-automated-tests/output-only-01-show-output/src/lib.rs
index 43c4c92f9a..462d224709 100644
--- a/listings/ch11-writing-automated-tests/output-only-01-show-output/src/lib.rs
+++ b/listings/ch11-writing-automated-tests/output-only-01-show-output/src/lib.rs
@@ -1,5 +1,5 @@
 pub fn prints_and_returns_10(a: i32) -> i32 {
-    println!("I got the value {}", a);
+    println!("I got the value {a}");
     10
 }
 
diff --git a/listings/ch12-an-io-project/listing-12-02/src/main.rs b/listings/ch12-an-io-project/listing-12-02/src/main.rs
index ae2fa7bb1b..afc3c3c9f9 100644
--- a/listings/ch12-an-io-project/listing-12-02/src/main.rs
+++ b/listings/ch12-an-io-project/listing-12-02/src/main.rs
@@ -6,6 +6,6 @@ fn main() {
     let query = &args[1];
     let file_path = &args[2];
 
-    println!("Searching for {}", query);
-    println!("In file {}", file_path);
+    println!("Searching for {query}");
+    println!("In file {file_path}");
 }
diff --git a/listings/ch12-an-io-project/listing-12-03/src/main.rs b/listings/ch12-an-io-project/listing-12-03/src/main.rs
index ae2fa7bb1b..afc3c3c9f9 100644
--- a/listings/ch12-an-io-project/listing-12-03/src/main.rs
+++ b/listings/ch12-an-io-project/listing-12-03/src/main.rs
@@ -6,6 +6,6 @@ fn main() {
     let query = &args[1];
     let file_path = &args[2];
 
-    println!("Searching for {}", query);
-    println!("In file {}", file_path);
+    println!("Searching for {query}");
+    println!("In file {file_path}");
 }
diff --git a/listings/ch12-an-io-project/listing-12-04/src/main.rs b/listings/ch12-an-io-project/listing-12-04/src/main.rs
index 944e4300ec..f343249797 100644
--- a/listings/ch12-an-io-project/listing-12-04/src/main.rs
+++ b/listings/ch12-an-io-project/listing-12-04/src/main.rs
@@ -10,9 +10,9 @@ fn main() {
     let query = &args[1];
     let file_path = &args[2];
 
-    println!("Searching for {}", query);
+    println!("Searching for {query}");
     // ANCHOR: here
-    println!("In file {}", file_path);
+    println!("In file {file_path}");
 
     let contents = fs::read_to_string(file_path)
         .expect("Should have been able to read the file");
diff --git a/listings/ch12-an-io-project/listing-12-05/src/main.rs b/listings/ch12-an-io-project/listing-12-05/src/main.rs
index 0615918338..838cacf39a 100644
--- a/listings/ch12-an-io-project/listing-12-05/src/main.rs
+++ b/listings/ch12-an-io-project/listing-12-05/src/main.rs
@@ -10,8 +10,8 @@ fn main() {
     // --snip--
     // ANCHOR_END: here
 
-    println!("Searching for {}", query);
-    println!("In file {}", file_path);
+    println!("Searching for {query}");
+    println!("In file {file_path}");
 
     let contents = fs::read_to_string(file_path)
         .expect("Should have been able to read the file");
diff --git a/listings/ch13-functional-features/listing-13-04/src/main.rs b/listings/ch13-functional-features/listing-13-04/src/main.rs
index 43b91bb30e..19f51a6f71 100644
--- a/listings/ch13-functional-features/listing-13-04/src/main.rs
+++ b/listings/ch13-functional-features/listing-13-04/src/main.rs
@@ -1,10 +1,10 @@
 fn main() {
     let list = vec![1, 2, 3];
-    println!("Before defining closure: {:?}", list);
+    println!("Before defining closure: {list:?}");
 
-    let only_borrows = || println!("From closure: {:?}", list);
+    let only_borrows = || println!("From closure: {list:?}");
 
-    println!("Before calling closure: {:?}", list);
+    println!("Before calling closure: {list:?}");
     only_borrows();
-    println!("After calling closure: {:?}", list);
+    println!("After calling closure: {list:?}");
 }
diff --git a/listings/ch13-functional-features/listing-13-05/src/main.rs b/listings/ch13-functional-features/listing-13-05/src/main.rs
index 37f8130e2c..f6c2a53de6 100644
--- a/listings/ch13-functional-features/listing-13-05/src/main.rs
+++ b/listings/ch13-functional-features/listing-13-05/src/main.rs
@@ -1,9 +1,9 @@
 fn main() {
     let mut list = vec![1, 2, 3];
-    println!("Before defining closure: {:?}", list);
+    println!("Before defining closure: {list:?}");
 
     let mut borrows_mutably = || list.push(7);
 
     borrows_mutably();
-    println!("After calling closure: {:?}", list);
+    println!("After calling closure: {list:?}");
 }
diff --git a/listings/ch13-functional-features/listing-13-06/src/main.rs b/listings/ch13-functional-features/listing-13-06/src/main.rs
index 2c8e18c9fd..ee9ca04570 100644
--- a/listings/ch13-functional-features/listing-13-06/src/main.rs
+++ b/listings/ch13-functional-features/listing-13-06/src/main.rs
@@ -2,9 +2,9 @@ use std::thread;
 
 fn main() {
     let list = vec![1, 2, 3];
-    println!("Before defining closure: {:?}", list);
+    println!("Before defining closure: {list:?}");
 
-    thread::spawn(move || println!("From thread: {:?}", list))
+    thread::spawn(move || println!("From thread: {list:?}"))
         .join()
         .unwrap();
 }
diff --git a/listings/ch13-functional-features/listing-13-07/src/main.rs b/listings/ch13-functional-features/listing-13-07/src/main.rs
index 73a25e5f91..e7ab8d3402 100644
--- a/listings/ch13-functional-features/listing-13-07/src/main.rs
+++ b/listings/ch13-functional-features/listing-13-07/src/main.rs
@@ -12,5 +12,5 @@ fn main() {
     ];
 
     list.sort_by_key(|r| r.width);
-    println!("{:#?}", list);
+    println!("{list:#?}");
 }
diff --git a/listings/ch13-functional-features/listing-13-08/src/main.rs b/listings/ch13-functional-features/listing-13-08/src/main.rs
index 3b9c9cbdfd..48920d39b4 100644
--- a/listings/ch13-functional-features/listing-13-08/src/main.rs
+++ b/listings/ch13-functional-features/listing-13-08/src/main.rs
@@ -18,5 +18,5 @@ fn main() {
         sort_operations.push(value);
         r.width
     });
-    println!("{:#?}", list);
+    println!("{list:#?}");
 }
diff --git a/listings/ch13-functional-features/listing-13-09/src/main.rs b/listings/ch13-functional-features/listing-13-09/src/main.rs
index a60d6fd3fc..f007e3c04d 100644
--- a/listings/ch13-functional-features/listing-13-09/src/main.rs
+++ b/listings/ch13-functional-features/listing-13-09/src/main.rs
@@ -16,5 +16,5 @@ fn main() {
         num_sort_operations += 1;
         r.width
     });
-    println!("{:#?}, sorted in {num_sort_operations} operations", list);
+    println!("{list:#?}, sorted in {num_sort_operations} operations");
 }
diff --git a/listings/ch13-functional-features/listing-13-11/src/main.rs b/listings/ch13-functional-features/listing-13-11/src/main.rs
index 712aff4085..b4e85169ab 100644
--- a/listings/ch13-functional-features/listing-13-11/src/main.rs
+++ b/listings/ch13-functional-features/listing-13-11/src/main.rs
@@ -5,7 +5,7 @@ fn main() {
     let v1_iter = v1.iter();
 
     for val in v1_iter {
-        println!("Got: {}", val);
+        println!("Got: {val}");
     }
     // ANCHOR_END: here
 }
diff --git a/listings/ch15-smart-pointers/listing-15-01/src/main.rs b/listings/ch15-smart-pointers/listing-15-01/src/main.rs
index 8da1d905d6..97f04f3858 100644
--- a/listings/ch15-smart-pointers/listing-15-01/src/main.rs
+++ b/listings/ch15-smart-pointers/listing-15-01/src/main.rs
@@ -1,4 +1,4 @@
 fn main() {
     let b = Box::new(5);
-    println!("b = {}", b);
+    println!("b = {b}");
 }
diff --git a/listings/ch15-smart-pointers/listing-15-24/src/main.rs b/listings/ch15-smart-pointers/listing-15-24/src/main.rs
index e225bd8620..e3dda1a196 100644
--- a/listings/ch15-smart-pointers/listing-15-24/src/main.rs
+++ b/listings/ch15-smart-pointers/listing-15-24/src/main.rs
@@ -18,7 +18,7 @@ fn main() {
 
     *value.borrow_mut() += 10;
 
-    println!("a after = {:?}", a);
-    println!("b after = {:?}", b);
-    println!("c after = {:?}", c);
+    println!("a after = {a:?}");
+    println!("b after = {b:?}");
+    println!("c after = {c:?}");
 }
diff --git a/listings/ch16-fearless-concurrency/listing-16-01/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-01/src/main.rs
index 6305a98e3d..ea10ba282a 100644
--- a/listings/ch16-fearless-concurrency/listing-16-01/src/main.rs
+++ b/listings/ch16-fearless-concurrency/listing-16-01/src/main.rs
@@ -4,13 +4,13 @@ use std::time::Duration;
 fn main() {
     thread::spawn(|| {
         for i in 1..10 {
-            println!("hi number {} from the spawned thread!", i);
+            println!("hi number {i} from the spawned thread!");
             thread::sleep(Duration::from_millis(1));
         }
     });
 
     for i in 1..5 {
-        println!("hi number {} from the main thread!", i);
+        println!("hi number {i} from the main thread!");
         thread::sleep(Duration::from_millis(1));
     }
 }
diff --git a/listings/ch16-fearless-concurrency/listing-16-02/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-02/src/main.rs
index e37607f1d6..33bf53f400 100644
--- a/listings/ch16-fearless-concurrency/listing-16-02/src/main.rs
+++ b/listings/ch16-fearless-concurrency/listing-16-02/src/main.rs
@@ -4,13 +4,13 @@ use std::time::Duration;
 fn main() {
     let handle = thread::spawn(|| {
         for i in 1..10 {
-            println!("hi number {} from the spawned thread!", i);
+            println!("hi number {i} from the spawned thread!");
             thread::sleep(Duration::from_millis(1));
         }
     });
 
     for i in 1..5 {
-        println!("hi number {} from the main thread!", i);
+        println!("hi number {i} from the main thread!");
         thread::sleep(Duration::from_millis(1));
     }
 
diff --git a/listings/ch16-fearless-concurrency/listing-16-03/output.txt b/listings/ch16-fearless-concurrency/listing-16-03/output.txt
index 321bf59d70..3acd5ef098 100644
--- a/listings/ch16-fearless-concurrency/listing-16-03/output.txt
+++ b/listings/ch16-fearless-concurrency/listing-16-03/output.txt
@@ -5,15 +5,15 @@ error[E0373]: closure may outlive the current function, but it borrows `v`, whic
   |
 6 |     let handle = thread::spawn(|| {
   |                                ^^ may outlive borrowed value `v`
-7 |         println!("Here's a vector: {:?}", v);
-  |                                           - `v` is borrowed here
+7 |         println!("Here's a vector: {v:?}");
+  |                                     - `v` is borrowed here
   |
 note: function requires argument type to outlive `'static`
  --> src/main.rs:6:18
   |
 6 |       let handle = thread::spawn(|| {
   |  __________________^
-7 | |         println!("Here's a vector: {:?}", v);
+7 | |         println!("Here's a vector: {v:?}");
 8 | |     });
   | |______^
 help: to force the closure to take ownership of `v` (and any other referenced variables), use the `move` keyword
diff --git a/listings/ch16-fearless-concurrency/listing-16-03/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-03/src/main.rs
index defc876482..b2231c5b86 100644
--- a/listings/ch16-fearless-concurrency/listing-16-03/src/main.rs
+++ b/listings/ch16-fearless-concurrency/listing-16-03/src/main.rs
@@ -4,7 +4,7 @@ fn main() {
     let v = vec![1, 2, 3];
 
     let handle = thread::spawn(|| {
-        println!("Here's a vector: {:?}", v);
+        println!("Here's a vector: {v:?}");
     });
 
     handle.join().unwrap();
diff --git a/listings/ch16-fearless-concurrency/listing-16-04/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-04/src/main.rs
index 0bccc5f56f..f0a9058a1c 100644
--- a/listings/ch16-fearless-concurrency/listing-16-04/src/main.rs
+++ b/listings/ch16-fearless-concurrency/listing-16-04/src/main.rs
@@ -4,7 +4,7 @@ fn main() {
     let v = vec![1, 2, 3];
 
     let handle = thread::spawn(|| {
-        println!("Here's a vector: {:?}", v);
+        println!("Here's a vector: {v:?}");
     });
 
     drop(v); // oh no!
diff --git a/listings/ch16-fearless-concurrency/listing-16-05/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-05/src/main.rs
index a6547dc4c1..76783e6149 100644
--- a/listings/ch16-fearless-concurrency/listing-16-05/src/main.rs
+++ b/listings/ch16-fearless-concurrency/listing-16-05/src/main.rs
@@ -4,7 +4,7 @@ fn main() {
     let v = vec![1, 2, 3];
 
     let handle = thread::spawn(move || {
-        println!("Here's a vector: {:?}", v);
+        println!("Here's a vector: {v:?}");
     });
 
     handle.join().unwrap();
diff --git a/listings/ch16-fearless-concurrency/listing-16-08/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-08/src/main.rs
index fbba9167d4..e7ac452dcd 100644
--- a/listings/ch16-fearless-concurrency/listing-16-08/src/main.rs
+++ b/listings/ch16-fearless-concurrency/listing-16-08/src/main.rs
@@ -10,5 +10,5 @@ fn main() {
     });
 
     let received = rx.recv().unwrap();
-    println!("Got: {}", received);
+    println!("Got: {received}");
 }
diff --git a/listings/ch16-fearless-concurrency/listing-16-09/output.txt b/listings/ch16-fearless-concurrency/listing-16-09/output.txt
index db85185372..2add0095e7 100644
--- a/listings/ch16-fearless-concurrency/listing-16-09/output.txt
+++ b/listings/ch16-fearless-concurrency/listing-16-09/output.txt
@@ -7,8 +7,8 @@ error[E0382]: borrow of moved value: `val`
    |             --- move occurs because `val` has type `String`, which does not implement the `Copy` trait
 9  |         tx.send(val).unwrap();
    |                 --- value moved here
-10 |         println!("val is {}", val);
-   |                               ^^^ value borrowed here after move
+10 |         println!("val is {val}");
+   |                           ^^^ value borrowed here after move
    |
    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
 
diff --git a/listings/ch16-fearless-concurrency/listing-16-09/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-09/src/main.rs
index 98a8129ab3..fe20d3474a 100644
--- a/listings/ch16-fearless-concurrency/listing-16-09/src/main.rs
+++ b/listings/ch16-fearless-concurrency/listing-16-09/src/main.rs
@@ -7,9 +7,9 @@ fn main() {
     thread::spawn(move || {
         let val = String::from("hi");
         tx.send(val).unwrap();
-        println!("val is {}", val);
+        println!("val is {val}");
     });
 
     let received = rx.recv().unwrap();
-    println!("Got: {}", received);
+    println!("Got: {received}");
 }
diff --git a/listings/ch16-fearless-concurrency/listing-16-10/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-10/src/main.rs
index 82b220de45..c9702bd858 100644
--- a/listings/ch16-fearless-concurrency/listing-16-10/src/main.rs
+++ b/listings/ch16-fearless-concurrency/listing-16-10/src/main.rs
@@ -20,6 +20,6 @@ fn main() {
     });
 
     for received in rx {
-        println!("Got: {}", received);
+        println!("Got: {received}");
     }
 }
diff --git a/listings/ch16-fearless-concurrency/listing-16-11/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-11/src/main.rs
index d92deab5cb..174a5d14bb 100644
--- a/listings/ch16-fearless-concurrency/listing-16-11/src/main.rs
+++ b/listings/ch16-fearless-concurrency/listing-16-11/src/main.rs
@@ -38,7 +38,7 @@ fn main() {
     });
 
     for received in rx {
-        println!("Got: {}", received);
+        println!("Got: {received}");
     }
 
     // --snip--
diff --git a/listings/ch16-fearless-concurrency/listing-16-12/src/main.rs b/listings/ch16-fearless-concurrency/listing-16-12/src/main.rs
index 0c0d6767ad..99ba5b489a 100644
--- a/listings/ch16-fearless-concurrency/listing-16-12/src/main.rs
+++ b/listings/ch16-fearless-concurrency/listing-16-12/src/main.rs
@@ -8,5 +8,5 @@ fn main() {
         *num = 6;
     }
 
-    println!("m = {:?}", m);
+    println!("m = {m:?}");
 }
diff --git a/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/src/main.rs b/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/src/main.rs
index 6205e57d33..7023a90f64 100644
--- a/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/src/main.rs
+++ b/listings/ch16-fearless-concurrency/no-listing-01-join-too-early/src/main.rs
@@ -4,7 +4,7 @@ use std::time::Duration;
 fn main() {
     let handle = thread::spawn(|| {
         for i in 1..10 {
-            println!("hi number {} from the spawned thread!", i);
+            println!("hi number {i} from the spawned thread!");
             thread::sleep(Duration::from_millis(1));
         }
     });
@@ -12,7 +12,7 @@ fn main() {
     handle.join().unwrap();
 
     for i in 1..5 {
-        println!("hi number {} from the main thread!", i);
+        println!("hi number {i} from the main thread!");
         thread::sleep(Duration::from_millis(1));
     }
 }
diff --git a/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt b/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt
index 301a9a44a4..fca5abeb80 100644
--- a/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt
+++ b/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt
@@ -8,8 +8,8 @@ error[E0382]: use of moved value: `v`
 5  |
 6  |     let handle = thread::spawn(move || {
    |                                ------- value moved into closure here
-7  |         println!("Here's a vector: {:?}", v);
-   |                                           - variable moved due to use in closure
+7  |         println!("Here's a vector: {v:?}");
+   |                                     - variable moved due to use in closure
 ...
 10 |     drop(v); // oh no!
    |          ^ value used here after move
diff --git a/listings/ch16-fearless-concurrency/output-only-01-move-drop/src/main.rs b/listings/ch16-fearless-concurrency/output-only-01-move-drop/src/main.rs
index 70f659c5f6..cc71cbab0b 100644
--- a/listings/ch16-fearless-concurrency/output-only-01-move-drop/src/main.rs
+++ b/listings/ch16-fearless-concurrency/output-only-01-move-drop/src/main.rs
@@ -4,7 +4,7 @@ fn main() {
     let v = vec![1, 2, 3];
 
     let handle = thread::spawn(move || {
-        println!("Here's a vector: {:?}", v);
+        println!("Here's a vector: {v:?}");
     });
 
     drop(v); // oh no!
diff --git a/listings/ch18-patterns-and-matching/listing-18-02/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-02/src/main.rs
index 5f75a4f2db..2479d845d6 100644
--- a/listings/ch18-patterns-and-matching/listing-18-02/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-02/src/main.rs
@@ -7,7 +7,7 @@ fn main() {
     stack.push(3);
 
     while let Some(top) = stack.pop() {
-        println!("{}", top);
+        println!("{top}");
     }
     // ANCHOR_END: here
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-03/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-03/src/main.rs
index eb922d62cd..218c180635 100644
--- a/listings/ch18-patterns-and-matching/listing-18-03/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-03/src/main.rs
@@ -3,7 +3,7 @@ fn main() {
     let v = vec!['a', 'b', 'c'];
 
     for (index, value) in v.iter().enumerate() {
-        println!("{} is at index {}", value, index);
+        println!("{value} is at index {index}");
     }
     // ANCHOR_END: here
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-07/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-07/src/main.rs
index 4eccb8088c..70069424c6 100644
--- a/listings/ch18-patterns-and-matching/listing-18-07/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-07/src/main.rs
@@ -1,5 +1,5 @@
 fn print_coordinates(&(x, y): &(i32, i32)) {
-    println!("Current location: ({}, {})", x, y);
+    println!("Current location: ({x}, {y})");
 }
 
 fn main() {
diff --git a/listings/ch18-patterns-and-matching/listing-18-09/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-09/src/main.rs
index d6274fc0e1..e378c37032 100644
--- a/listings/ch18-patterns-and-matching/listing-18-09/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-09/src/main.rs
@@ -2,7 +2,7 @@ fn main() {
     let some_option_value: Option<i32> = None;
     // ANCHOR: here
     if let Some(x) = some_option_value {
-        println!("{}", x);
+        println!("{x}");
     }
     // ANCHOR_END: here
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-10/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-10/src/main.rs
index cb81772e0c..2073948e7d 100644
--- a/listings/ch18-patterns-and-matching/listing-18-10/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-10/src/main.rs
@@ -1,7 +1,7 @@
 fn main() {
     // ANCHOR: here
     if let x = 5 {
-        println!("{}", x);
+        println!("{x}");
     };
     // ANCHOR_END: here
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-11/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-11/src/main.rs
index db942b7ac7..0552128036 100644
--- a/listings/ch18-patterns-and-matching/listing-18-11/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-11/src/main.rs
@@ -6,9 +6,9 @@ fn main() {
     match x {
         Some(50) => println!("Got 50"),
         Some(y) => println!("Matched, y = {y}"),
-        _ => println!("Default case, x = {:?}", x),
+        _ => println!("Default case, x = {x:?}"),
     }
 
-    println!("at the end: x = {:?}, y = {y}", x);
+    println!("at the end: x = {x:?}, y = {y}");
     // ANCHOR_END: here
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-15/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-15/src/main.rs
index a3138b2277..9407cc16ab 100644
--- a/listings/ch18-patterns-and-matching/listing-18-15/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-15/src/main.rs
@@ -19,7 +19,7 @@ fn main() {
             println!("Text message: {text}");
         }
         Message::ChangeColor(r, g, b) => {
-            println!("Change the color to red {r}, green {g}, and blue {b}",)
+            println!("Change the color to red {r}, green {g}, and blue {b}")
         }
     }
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-17/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-17/src/main.rs
index cf1fbe0721..7053860348 100644
--- a/listings/ch18-patterns-and-matching/listing-18-17/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-17/src/main.rs
@@ -1,5 +1,5 @@
 fn foo(_: i32, y: i32) {
-    println!("This code only uses the y parameter: {}", y);
+    println!("This code only uses the y parameter: {y}");
 }
 
 fn main() {
diff --git a/listings/ch18-patterns-and-matching/listing-18-18/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-18/src/main.rs
index b776c64c42..2b8877620a 100644
--- a/listings/ch18-patterns-and-matching/listing-18-18/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-18/src/main.rs
@@ -12,6 +12,6 @@ fn main() {
         }
     }
 
-    println!("setting is {:?}", setting_value);
+    println!("setting is {setting_value:?}");
     // ANCHOR_END: here
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-21/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-21/src/main.rs
index 980610503f..320db62f5f 100644
--- a/listings/ch18-patterns-and-matching/listing-18-21/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-21/src/main.rs
@@ -6,6 +6,6 @@ fn main() {
         println!("found a string");
     }
 
-    println!("{:?}", s);
+    println!("{s:?}");
     // ANCHOR_END: here
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-22/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-22/src/main.rs
index e2faa345bc..9df1492b29 100644
--- a/listings/ch18-patterns-and-matching/listing-18-22/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-22/src/main.rs
@@ -6,6 +6,6 @@ fn main() {
         println!("found a string");
     }
 
-    println!("{:?}", s);
+    println!("{s:?}");
     // ANCHOR_END: here
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-23/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-23/src/main.rs
index 7a9d9bb36f..491d6c53f8 100644
--- a/listings/ch18-patterns-and-matching/listing-18-23/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-23/src/main.rs
@@ -9,7 +9,7 @@ fn main() {
     let origin = Point { x: 0, y: 0, z: 0 };
 
     match origin {
-        Point { x, .. } => println!("x is {}", x),
+        Point { x, .. } => println!("x is {x}"),
     }
     // ANCHOR_END: here
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-25/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-25/src/main.rs
index b90884eb9c..6c3b24b7db 100644
--- a/listings/ch18-patterns-and-matching/listing-18-25/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-25/src/main.rs
@@ -3,7 +3,7 @@ fn main() {
 
     match numbers {
         (.., second, ..) => {
-            println!("Some numbers: {}", second)
+            println!("Some numbers: {second}")
         },
     }
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-26/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-26/src/main.rs
index 41fce97950..2566169a7d 100644
--- a/listings/ch18-patterns-and-matching/listing-18-26/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-26/src/main.rs
@@ -3,8 +3,8 @@ fn main() {
     let num = Some(4);
 
     match num {
-        Some(x) if x % 2 == 0 => println!("The number {} is even", x),
-        Some(x) => println!("The number {} is odd", x),
+        Some(x) if x % 2 == 0 => println!("The number {x} is even"),
+        Some(x) => println!("The number {x} is odd"),
         None => (),
     }
     // ANCHOR_END: here
diff --git a/listings/ch18-patterns-and-matching/listing-18-27/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-27/src/main.rs
index 8386a0ab8f..06fd949964 100644
--- a/listings/ch18-patterns-and-matching/listing-18-27/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-27/src/main.rs
@@ -5,8 +5,8 @@ fn main() {
     match x {
         Some(50) => println!("Got 50"),
         Some(n) if n == y => println!("Matched, n = {n}"),
-        _ => println!("Default case, x = {:?}", x),
+        _ => println!("Default case, x = {x:?}"),
     }
 
-    println!("at the end: x = {:?}, y = {y}", x);
+    println!("at the end: x = {x:?}, y = {y}");
 }
diff --git a/listings/ch18-patterns-and-matching/listing-18-29/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-29/src/main.rs
index 3514deb636..e36fda8789 100644
--- a/listings/ch18-patterns-and-matching/listing-18-29/src/main.rs
+++ b/listings/ch18-patterns-and-matching/listing-18-29/src/main.rs
@@ -9,11 +9,11 @@ fn main() {
     match msg {
         Message::Hello {
             id: id_variable @ 3..=7,
-        } => println!("Found an id in range: {}", id_variable),
+        } => println!("Found an id in range: {id_variable}"),
         Message::Hello { id: 10..=12 } => {
             println!("Found an id in another range")
         }
-        Message::Hello { id } => println!("Found some other id: {}", id),
+        Message::Hello { id } => println!("Found some other id: {id}"),
     }
     // ANCHOR_END: here
 }
diff --git a/listings/ch19-advanced-features/listing-19-09/src/main.rs b/listings/ch19-advanced-features/listing-19-09/src/main.rs
index 82a4b4219f..fda5179af7 100644
--- a/listings/ch19-advanced-features/listing-19-09/src/main.rs
+++ b/listings/ch19-advanced-features/listing-19-09/src/main.rs
@@ -1,5 +1,5 @@
 static HELLO_WORLD: &str = "Hello, world!";
 
 fn main() {
-    println!("name is: {}", HELLO_WORLD);
+    println!("name is: {HELLO_WORLD}");
 }
diff --git a/listings/ch19-advanced-features/listing-19-10/src/main.rs b/listings/ch19-advanced-features/listing-19-10/src/main.rs
index e8dab68e0d..b5559fd3a5 100644
--- a/listings/ch19-advanced-features/listing-19-10/src/main.rs
+++ b/listings/ch19-advanced-features/listing-19-10/src/main.rs
@@ -10,6 +10,6 @@ fn main() {
     add_to_count(3);
 
     unsafe {
-        println!("COUNTER: {}", COUNTER);
+        println!("COUNTER: {COUNTER}");
     }
 }
diff --git a/listings/ch19-advanced-features/listing-19-22/src/main.rs b/listings/ch19-advanced-features/listing-19-22/src/main.rs
index febe58b0c5..7069fef179 100644
--- a/listings/ch19-advanced-features/listing-19-22/src/main.rs
+++ b/listings/ch19-advanced-features/listing-19-22/src/main.rs
@@ -7,7 +7,7 @@ trait OutlinePrint: fmt::Display {
         let len = output.len();
         println!("{}", "*".repeat(len + 4));
         println!("*{}*", " ".repeat(len + 2));
-        println!("* {} *", output);
+        println!("* {output} *");
         println!("*{}*", " ".repeat(len + 2));
         println!("{}", "*".repeat(len + 4));
     }
diff --git a/listings/ch19-advanced-features/listing-19-23/src/main.rs b/listings/ch19-advanced-features/listing-19-23/src/main.rs
index eae46c92f3..f8c8366b4c 100644
--- a/listings/ch19-advanced-features/listing-19-23/src/main.rs
+++ b/listings/ch19-advanced-features/listing-19-23/src/main.rs
@@ -10,5 +10,5 @@ impl fmt::Display for Wrapper {
 
 fn main() {
     let w = Wrapper(vec![String::from("hello"), String::from("world")]);
-    println!("w = {}", w);
+    println!("w = {w}");
 }
diff --git a/listings/ch19-advanced-features/listing-19-27/src/main.rs b/listings/ch19-advanced-features/listing-19-27/src/main.rs
index 91b2cf04bf..312df2412f 100644
--- a/listings/ch19-advanced-features/listing-19-27/src/main.rs
+++ b/listings/ch19-advanced-features/listing-19-27/src/main.rs
@@ -9,5 +9,5 @@ fn do_twice(f: fn(i32) -> i32, arg: i32) -> i32 {
 fn main() {
     let answer = do_twice(add_one, 5);
 
-    println!("The answer is: {}", answer);
+    println!("The answer is: {answer}");
 }
diff --git a/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/src/main.rs b/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/src/main.rs
index a1e2fe4c46..0e45f3c283 100644
--- a/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/src/main.rs
+++ b/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/src/main.rs
@@ -6,7 +6,7 @@ trait OutlinePrint: fmt::Display {
         let len = output.len();
         println!("{}", "*".repeat(len + 4));
         println!("*{}*", " ".repeat(len + 2));
-        println!("* {} *", output);
+        println!("* {output} *");
         println!("*{}*", " ".repeat(len + 2));
         println!("{}", "*".repeat(len + 4));
     }
diff --git a/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/src/main.rs b/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/src/main.rs
index c7bbb6a708..fa5be1c7cf 100644
--- a/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/src/main.rs
+++ b/listings/ch19-advanced-features/no-listing-03-impl-display-for-point/src/main.rs
@@ -4,7 +4,7 @@ trait OutlinePrint: fmt::Display {
         let len = output.len();
         println!("{}", "*".repeat(len + 4));
         println!("*{}*", " ".repeat(len + 2));
-        println!("* {} *", output);
+        println!("* {output} *");
         println!("*{}*", " ".repeat(len + 2));
         println!("{}", "*".repeat(len + 4));
     }
diff --git a/listings/ch20-web-server/listing-20-02/src/main.rs b/listings/ch20-web-server/listing-20-02/src/main.rs
index 7240c73c7f..f139846c6d 100644
--- a/listings/ch20-web-server/listing-20-02/src/main.rs
+++ b/listings/ch20-web-server/listing-20-02/src/main.rs
@@ -21,5 +21,5 @@ fn handle_connection(mut stream: TcpStream) {
         .take_while(|line| !line.is_empty())
         .collect();
 
-    println!("Request: {:#?}", http_request);
+    println!("Request: {http_request:#?}");
 }
diff --git a/src/ch09-02-recoverable-errors-with-result.md b/src/ch09-02-recoverable-errors-with-result.md
index 2ee006f09d..2dd864f08c 100644
--- a/src/ch09-02-recoverable-errors-with-result.md
+++ b/src/ch09-02-recoverable-errors-with-result.md
@@ -147,10 +147,10 @@ the missing file error.
 >     let greeting_file = File::open("hello.txt").unwrap_or_else(|error| {
 >         if error.kind() == ErrorKind::NotFound {
 >             File::create("hello.txt").unwrap_or_else(|error| {
->                 panic!("Problem creating the file: {:?}", error);
+>                 panic!("Problem creating the file: {error:?}");
 >             })
 >         } else {
->             panic!("Problem opening the file: {:?}", error);
+>             panic!("Problem opening the file: {error:?}");
 >         }
 >     });
 > }
diff --git a/tools/doc-to-md.sh b/tools/doc-to-md.sh
index 8c802a71fa..2649460065 100755
--- a/tools/doc-to-md.sh
+++ b/tools/doc-to-md.sh
@@ -22,7 +22,7 @@ directory, so all fixes need to be made in `/src/`.
     unzip -o "tmp/$filename.docx" -d "tmp/$filename"
     # Convert to markdown with XSL.
     xsltproc tools/docx-to-md.xsl "tmp/$filename/word/document.xml" | \
-    # Hard wrap at 80 chars at word bourdaries.
+    # Hard wrap at 80 chars at word boundaries.
     fold -w 80 -s | \
     # Remove trailing whitespace and append to the file in the `nostarch` dir for comparison.
     sed -e "s/ *$//" >> "nostarch/$filename.md"
diff --git a/tools/src/bin/link2print.rs b/tools/src/bin/link2print.rs
index 1e92ecbccd..c57d788d21 100644
--- a/tools/src/bin/link2print.rs
+++ b/tools/src/bin/link2print.rs
@@ -71,13 +71,13 @@ fn parse_links((buffer, ref_map): (String, HashMap<String, String>)) -> String {
                             Some(key) => {
                                 match key.as_str() {
                                     // `[name][]`
-                                    "" => ref_map.get(&name.to_uppercase()).unwrap_or_else(|| panic!("could not find url for the link text `{}`", name)).to_string(),
+                                    "" => ref_map.get(&name.to_uppercase()).unwrap_or_else(|| panic!("could not find url for the link text `{name}`")).to_string(),
                                     // `[name][reference]`
                                     _ => ref_map.get(&key.as_str().to_uppercase()).unwrap_or_else(|| panic!("could not find url for the link text `{}`", key.as_str())).to_string(),
                                 }
                             }
                             // `[name]` as reference
-                            None => ref_map.get(&name.to_uppercase()).unwrap_or_else(|| panic!("could not find url for the link text `{}`", name)).to_string(),
+                            None => ref_map.get(&name.to_uppercase()).unwrap_or_else(|| panic!("could not find url for the link text `{name}`")).to_string(),
                         }
                     }
                 };