diff --git a/Cargo.toml b/Cargo.toml
index c59425f92..60bd20b0f 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 148ad84c9..ebcd3691b 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     }                      // this scope is now over, and s is no longer valid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 b001cc5f4..edf51a947 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/no-listing-01-can-mutate-string/src/main.rs b/listings/ch04-understanding-ownership/no-listing-01-can-mutate-string/src/main.rs
index b68f0f1e7..15bc9d922 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 d0b9f1879..e35f6d803 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-13-reference-scope-ends/src/main.rs b/listings/ch04-understanding-ownership/no-listing-13-reference-scope-ends/src/main.rs
index 861944966..c005414d8 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 99e04018d..b23e45f43 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 2ffc4b8e7..67e0b92a4 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 84e32aee4..f763b50d3 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 dc2bffb91..0a037517a 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-12-if-let/src/main.rs b/listings/ch06-enums-and-pattern-matching/no-listing-12-if-let/src/main.rs
index 735086d4e..7d7254ea0 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/ch07-managing-growing-projects/quick-reference-example/src/main.rs b/listings/ch07-managing-growing-projects/quick-reference-example/src/main.rs
index 7a024a9a0..0d9a0ca92 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 e8684cf2b..29025b417 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 3ad97b57a..013895632 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 f3f6aa166..84dd1cd4b 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 69da109fe..832f57f0e 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 83ea01044..e0bc55c3f 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/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 a4dba7ed4..c9e9bbbd2 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 8c523a8be..fd43154a9 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 899222909..1878f5aac 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 a47e3f232..ac3b1f7c1 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 df33743f7..094eb416a 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 d71134ea0..773340eab 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 e8ca92328..6679bcf31 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 09ae3919c..634ff9391 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 0f076a71d..8b64cd000 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 6af8c9f0d..bf41acd1f 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 09c3a0daa..7668de134 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 836ec7295..fc9ff296c 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 471347c68..63d1668ca 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
@@ -9,8 +9,8 @@ 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` (bin "chapter10") due to 1 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 2a6fa5898..f2e633862 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 d144305cb..4c35d90e3 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 aca4be0a7..4d596ec43 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 32ad530b5..b8222308d 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 cfafa9a6d..4b0201fb1 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-11-10/src/lib.rs b/listings/ch11-writing-automated-tests/listing-11-10/src/lib.rs
index 6fd76ce00..99fc06b8d 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/output-only-01-show-output/src/lib.rs b/listings/ch11-writing-automated-tests/output-only-01-show-output/src/lib.rs
index 43c4c92f9..462d22470 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 ae2fa7bb1..afc3c3c9f 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 ae2fa7bb1..afc3c3c9f 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 944e4300e..f34324979 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 061591833..838cacf39 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 43b91bb30..19f51a6f7 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 37f8130e2..f6c2a53de 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 2c8e18c9f..ee9ca0457 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 73a25e5f9..e7ab8d340 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 1b60f1f6a..e00fec70f 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 a60d6fd3f..f007e3c04 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 712aff408..b4e85169a 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 8da1d905d..97f04f385 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 e225bd862..e3dda1a19 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-16-03/output.txt b/listings/ch16-fearless-concurrency/listing-16-03/output.txt
index f90a9bcf4..3de4d4d3f 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 defc87648..b2231c5b8 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 0bccc5f56..f0a9058a1 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 a6547dc4c..76783e614 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 fbba9167d..e7ac452dc 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 b32885752..d521ebbb4 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)
 help: consider cloning the value if the performance cost is acceptable
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 98a8129ab..fe20d3474 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 82b220de4..c9702bd85 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 d92deab5c..174a5d14b 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 0c0d6767a..99ba5b489 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/output-only-01-move-drop/output.txt b/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt
index 269f1a95e..929354c13 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 70f659c5f..cc71cbab0 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 5f75a4f2d..2479d845d 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 eb922d62c..218c18063 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 4eccb8088..70069424c 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 d6274fc0e..e378c3703 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 cb81772e0..2073948e7 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-18-15/src/main.rs b/listings/ch18-patterns-and-matching/listing-18-15/src/main.rs
index a3138b227..9407cc16a 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 cf1fbe072..705386034 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 b776c64c4..2b8877620 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 980610503..320db62f5 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 e2faa345b..9df1492b2 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 7a9d9bb36..491d6c53f 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 b90884eb9..6c3b24b7d 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 41fce9795..2566169a7 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 d4748fb15..06fd94996 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
@@ -8,5 +8,5 @@ fn main() {
         _ => 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 3514deb63..e36fda878 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 82a4b4219..fda5179af 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 e8dab68e0..b5559fd3a 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 febe58b0c..7069fef17 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 eae46c92f..f8c8366b4 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 91b2cf04b..312df2412 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 a1e2fe4c4..0e45f3c28 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 c7bbb6a70..fa5be1c7c 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 7240c73c7..f139846c6 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 34c4e2061..c6c4e4b96 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 8c802a71f..264946006 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 1e92ecbcc..c57d788d2 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(),
                         }
                     }
                 };