Update to Rust 1.76

2026-04-03 13:35:12 -04:00 · 2024-02-19 13:35:43 -05:00
parent 57516ea03b
commit 940fb140f5
72 changed files with 119 additions and 102 deletions
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,8 +12,8 @@ jobs:
    - name: Install Rust
      run: |
        rustup set profile minimal
-        rustup toolchain install 1.75 -c rust-docs
-        rustup default 1.75
+        rustup toolchain install 1.76 -c rust-docs
+        rustup default 1.76
    - name: Install mdbook
      run: |
        mkdir bin
--- a/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.lock
+++ b/listings/ch02-guessing-game-tutorial/listing-02-02/Cargo.lock
@@ -10,9 +10,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"

 [[package]]
 name = "getrandom"
-version = "0.2.7"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4eb1a864a501629691edf6c15a593b7a51eebaa1e8468e9ddc623de7c9b58ec6"
+checksum = "190092ea657667030ac6a35e305e62fc4dd69fd98ac98631e5d3a2b1575a12b5"
 dependencies = [
 "cfg-if",
 "libc",
@@ -28,15 +28,15 @@ dependencies = [

 [[package]]
 name = "libc"
-version = "0.2.127"
+version = "0.2.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "505e71a4706fa491e9b1b55f51b95d4037d0821ee40131190475f692b35b009b"
+checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"

 [[package]]
 name = "ppv-lite86"
-version = "0.2.16"
+version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
+checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"

 [[package]]
 name = "rand"
@@ -61,9 +61,9 @@ dependencies = [

 [[package]]
 name = "rand_core"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 dependencies = [
 "getrandom",
 ]
--- a/listings/ch02-guessing-game-tutorial/listing-02-04/output.txt
+++ b/listings/ch02-guessing-game-tutorial/listing-02-04/output.txt
@@ -18,7 +18,7 @@ error[E0308]: mismatched types
   = note: expected reference `&String`
              found reference `&{integer}`
 note: method defined here
-  --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/cmp.rs:811:8
+  --> /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/cmp.rs:814:8

 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `guessing_game` (bin "guessing_game") due to previous error
+error: could not compile `guessing_game` (bin "guessing_game") due to 1 previous error
--- a/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/output.txt
+++ b/listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/output.txt
@@ -13,4 +13,4 @@ error[E0384]: cannot assign twice to immutable variable `x`
  |     ^^^^^ cannot assign twice to immutable variable

 For more information about this error, try `rustc --explain E0384`.
-error: could not compile `variables` (bin "variables") due to previous error
+error: could not compile `variables` (bin "variables") due to 1 previous error
--- a/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/output.txt
+++ b/listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/output.txt
@@ -15,4 +15,4 @@ help: try removing the method call
  |

 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `variables` (bin "variables") due to previous error
+error: could not compile `variables` (bin "variables") due to 1 previous error
--- a/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/output.txt
+++ b/listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/output.txt
@@ -22,4 +22,4 @@ help: remove these parentheses
  |

 warning: `functions` (bin "functions") generated 1 warning
-error: could not compile `functions` (bin "functions") due to previous error; 1 warning emitted
+error: could not compile `functions` (bin "functions") due to 1 previous error; 1 warning emitted
--- a/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/output.txt
+++ b/listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/output.txt
@@ -11,4 +11,4 @@ error[E0308]: mismatched types
  |          - help: remove this semicolon to return this value

 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `functions` (bin "functions") due to previous error
+error: could not compile `functions` (bin "functions") due to 1 previous error
--- a/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/output.txt
+++ b/listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/output.txt
@@ -7,4 +7,4 @@ error[E0308]: mismatched types
  |        ^^^^^^ expected `bool`, found integer

 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `branches` (bin "branches") due to previous error
+error: could not compile `branches` (bin "branches") due to 1 previous error
--- a/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/output.txt
+++ b/listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/output.txt
@@ -9,4 +9,4 @@ error[E0308]: `if` and `else` have incompatible types
  |                                 expected because of this

 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `branches` (bin "branches") due to previous error
+error: could not compile `branches` (bin "branches") due to 1 previous error
--- a/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/output.txt
+++ b/listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/output.txt
@@ -13,4 +13,4 @@ help: consider giving `guess` an explicit type
  |              ++++++++++++

 For more information about this error, try `rustc --explain E0284`.
-error: could not compile `no_type_annotations` (bin "no_type_annotations") due to previous error
+error: could not compile `no_type_annotations` (bin "no_type_annotations") due to 1 previous error
--- a/listings/ch04-understanding-ownership/listing-04-06/output.txt
+++ b/listings/ch04-understanding-ownership/listing-04-06/output.txt
@@ -12,4 +12,4 @@ help: consider changing this to be a mutable reference
  |                         +++

 For more information about this error, try `rustc --explain E0596`.
-error: could not compile `ownership` (bin "ownership") due to previous error
+error: could not compile `ownership` (bin "ownership") due to 1 previous error
--- a/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/output.txt
+++ b/listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/output.txt
@@ -18,4 +18,4 @@ help: consider cloning the value if the performance cost is acceptable
  |                ++++++++

 For more information about this error, try `rustc --explain E0382`.
-error: could not compile `ownership` (bin "ownership") due to previous error
+error: could not compile `ownership` (bin "ownership") due to 1 previous error
--- a/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/output.txt
+++ b/listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/output.txt
@@ -12,4 +12,4 @@ error[E0499]: cannot borrow `s` as mutable more than once at a time
  |                        -- first borrow later used here

 For more information about this error, try `rustc --explain E0499`.
-error: could not compile `ownership` (bin "ownership") due to previous error
+error: could not compile `ownership` (bin "ownership") due to 1 previous error
--- a/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/output.txt
+++ b/listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/output.txt
@@ -13,4 +13,4 @@ error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immuta
  |                                -- immutable borrow later used here

 For more information about this error, try `rustc --explain E0502`.
-error: could not compile `ownership` (bin "ownership") due to previous error
+error: could not compile `ownership` (bin "ownership") due to 1 previous error
--- a/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/output.txt
+++ b/listings/ch04-understanding-ownership/no-listing-14-dangling-reference/output.txt
@@ -7,10 +7,15 @@ error[E0106]: missing lifetime specifier
  |                ^ expected named lifetime parameter
  |
  = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
-help: consider using the `'static` lifetime
+help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
  |
 5 | fn dangle() -> &'static String {
  |                 +++++++
+help: instead, you are more likely to want to return an owned value
+  |
+5 - fn dangle() -> &String {
+5 + fn dangle() -> String {
+  |

 For more information about this error, try `rustc --explain E0106`.
-error: could not compile `ownership` (bin "ownership") due to previous error
+error: could not compile `ownership` (bin "ownership") due to 1 previous error
--- a/listings/ch04-understanding-ownership/no-listing-19-slice-error/output.txt
+++ b/listings/ch04-understanding-ownership/no-listing-19-slice-error/output.txt
@@ -13,4 +13,4 @@ error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immuta
   |                                       ---- immutable borrow later used here

 For more information about this error, try `rustc --explain E0502`.
-error: could not compile `ownership` (bin "ownership") due to previous error
+error: could not compile `ownership` (bin "ownership") due to 1 previous error
--- a/listings/ch05-using-structs-to-structure-related-data/listing-05-11/output.txt
+++ b/listings/ch05-using-structs-to-structure-related-data/listing-05-11/output.txt
@@ -11,4 +11,4 @@ error[E0277]: `Rectangle` doesn't implement `std::fmt::Display`
   = 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)

 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `rectangles` (bin "rectangles") due to previous error
+error: could not compile `rectangles` (bin "rectangles") due to 1 previous error
--- a/listings/ch05-using-structs-to-structure-related-data/no-listing-05-dbg-macro/output.txt
+++ b/listings/ch05-using-structs-to-structure-related-data/no-listing-05-dbg-macro/output.txt
@@ -2,8 +2,8 @@ $ cargo run
   Compiling rectangles v0.1.0 (file:///projects/rectangles)
    Finished dev [unoptimized + debuginfo] target(s) in 0.61s
     Running `target/debug/rectangles`
-[src/main.rs:10] 30 * scale = 60
-[src/main.rs:14] &rect1 = Rectangle {
+[src/main.rs:10:16] 30 * scale = 60
+[src/main.rs:14:5] &rect1 = Rectangle {
    width: 60,
    height: 50,
 }
--- a/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/output.txt
+++ b/listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/output.txt
@@ -16,4 +16,4 @@ help: consider annotating `Rectangle` with `#[derive(Debug)]`
   |

 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `rectangles` (bin "rectangles") due to previous error
+error: could not compile `rectangles` (bin "rectangles") due to 1 previous error
--- a/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/output.txt
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/output.txt
@@ -14,4 +14,4 @@ error[E0277]: cannot add `Option<i8>` to `i8`
            <&i8 as Add<&i8>>

 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `enums` (bin "enums") due to previous error
+error: could not compile `enums` (bin "enums") due to 1 previous error
--- a/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/output.txt
+++ b/listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/output.txt
@@ -7,8 +7,8 @@ error[E0004]: non-exhaustive patterns: `None` not covered
  |               ^ pattern `None` not covered
  |
 note: `Option<i32>` defined here
- --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/option.rs:569:1
- ::: /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/option.rs:573:5
+ --> /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/option.rs:570:1
+ ::: /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/option.rs:574:5
  |
  = note: not covered
  = note: the matched value is of type `Option<i32>`
@@ -19,4 +19,4 @@ help: ensure that all possible cases are being handled by adding a match arm wit
  |

 For more information about this error, try `rustc --explain E0004`.
-error: could not compile `enums` (bin "enums") due to previous error
+error: could not compile `enums` (bin "enums") due to 1 previous error
--- a/listings/ch07-managing-growing-projects/listing-07-12/output.txt
+++ b/listings/ch07-managing-growing-projects/listing-07-12/output.txt
@@ -21,4 +21,4 @@ warning: unused import: `crate::front_of_house::hosting`

 For more information about this error, try `rustc --explain E0433`.
 warning: `restaurant` (lib) generated 1 warning
-error: could not compile `restaurant` (lib) due to previous error; 1 warning emitted
+error: could not compile `restaurant` (lib) due to 1 previous error; 1 warning emitted
--- a/listings/ch08-common-collections/listing-08-06/output.txt
+++ b/listings/ch08-common-collections/listing-08-06/output.txt
@@ -13,4 +13,4 @@ error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immuta
  |                                     ------- immutable borrow later used here

 For more information about this error, try `rustc --explain E0502`.
-error: could not compile `collections` (bin "collections") due to previous error
+error: could not compile `collections` (bin "collections") due to 1 previous error
--- a/listings/ch08-common-collections/listing-08-19/output.txt
+++ b/listings/ch08-common-collections/listing-08-19/output.txt
@@ -1,10 +1,10 @@
 $ cargo run
   Compiling collections v0.1.0 (file:///projects/collections)
 error[E0277]: the type `String` cannot be indexed by `{integer}`
- --> src/main.rs:3:13
+ --> src/main.rs:3:16
  |
 3 |     let h = s1[0];
-  |             ^^^^^ `String` cannot be indexed by `{integer}`
+  |                ^ `String` cannot be indexed by `{integer}`
  |
  = help: the trait `Index<{integer}>` is not implemented for `String`
  = help: the following other types implement trait `Index<Idx>`:
@@ -16,4 +16,4 @@ error[E0277]: the type `String` cannot be indexed by `{integer}`
            <String as Index<RangeToInclusive<usize>>>

 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `collections` (bin "collections") due to previous error
+error: could not compile `collections` (bin "collections") due to 1 previous error
--- a/listings/ch09-error-handling/listing-09-10/output.txt
+++ b/listings/ch09-error-handling/listing-09-10/output.txt
@@ -11,4 +11,4 @@ error[E0277]: the `?` operator can only be used in a function that returns `Resu
  = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`

 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `error-handling` (bin "error-handling") due to previous error
+error: could not compile `error-handling` (bin "error-handling") due to 1 previous error
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/output.txt
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-05/output.txt
@@ -14,4 +14,4 @@ help: consider restricting type parameter `T`
  |             ++++++++++++++++++++++

 For more information about this error, try `rustc --explain E0369`.
-error: could not compile `chapter10` (bin "chapter10") due to previous error
+error: could not compile `chapter10` (bin "chapter10") due to 1 previous error
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/output.txt
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-07/output.txt
@@ -7,4 +7,4 @@ error[E0308]: mismatched types
  |                                      ^^^ expected integer, found floating-point number

 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `chapter10` (bin "chapter10") due to previous error
+error: could not compile `chapter10` (bin "chapter10") due to 1 previous error
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/output.txt
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-16/output.txt
@@ -14,4 +14,4 @@ error[E0597]: `x` does not live long enough
  |                       - borrow later used here

 For more information about this error, try `rustc --explain E0597`.
-error: could not compile `chapter10` (bin "chapter10") due to previous error
+error: could not compile `chapter10` (bin "chapter10") due to 1 previous error
--- a/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/output.txt
+++ b/listings/ch10-generic-types-traits-and-lifetimes/listing-10-20/output.txt
@@ -13,4 +13,4 @@ help: consider introducing a named lifetime parameter
  |           ++++     ++          ++          ++

 For more information about this error, try `rustc --explain E0106`.
-error: could not compile `chapter10` (bin "chapter10") due to previous error
+error: could not compile `chapter10` (bin "chapter10") due to 1 previous error
--- 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
@@ -13,4 +13,4 @@ error[E0597]: `string2` does not live long enough
  |                                          ------ borrow later used here

 For more information about this error, try `rustc --explain E0597`.
-error: could not compile `chapter10` (bin "chapter10") due to previous error
+error: could not compile `chapter10` (bin "chapter10") due to 1 previous error
--- a/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/output.txt
+++ b/listings/ch10-generic-types-traits-and-lifetimes/no-listing-09-unrelated-lifetime/output.txt
@@ -10,4 +10,4 @@ error[E0515]: cannot return value referencing local variable `result`
   |     `result` is borrowed here

 For more information about this error, try `rustc --explain E0515`.
-error: could not compile `chapter10` (bin "chapter10") due to previous error
+error: could not compile `chapter10` (bin "chapter10") due to 1 previous error
--- a/listings/ch11-writing-automated-tests/listing-11-01/src/lib.rs
+++ b/listings/ch11-writing-automated-tests/listing-11-01/src/lib.rs
@@ -1,8 +1,14 @@
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
 #[cfg(test)]
 mod tests {
+    use super::*;
+
    #[test]
    fn it_works() {
-        let result = 2 + 2;
+        let result = add(2, 2);
        assert_eq!(result, 4);
    }
 }
--- a/listings/ch12-an-io-project/listing-12-01/output.txt
+++ b/listings/ch12-an-io-project/listing-12-01/output.txt
@@ -2,6 +2,6 @@ $ cargo run
   Compiling minigrep v0.1.0 (file:///projects/minigrep)
    Finished dev [unoptimized + debuginfo] target(s) in 0.61s
     Running `target/debug/minigrep`
-[src/main.rs:5] args = [
+[src/main.rs:5:5] args = [
    "target/debug/minigrep",
 ]
--- a/listings/ch12-an-io-project/output-only-01-with-args/output.txt
+++ b/listings/ch12-an-io-project/output-only-01-with-args/output.txt
@@ -2,7 +2,7 @@ $ cargo run -- needle haystack
   Compiling minigrep v0.1.0 (file:///projects/minigrep)
    Finished dev [unoptimized + debuginfo] target(s) in 1.57s
     Running `target/debug/minigrep needle haystack`
-[src/main.rs:5] args = [
+[src/main.rs:5:5] args = [
    "target/debug/minigrep",
    "needle",
    "haystack",
--- a/listings/ch12-an-io-project/output-only-02-missing-lifetimes/output.txt
+++ b/listings/ch12-an-io-project/output-only-02-missing-lifetimes/output.txt
@@ -13,4 +13,4 @@ help: consider introducing a named lifetime parameter
   |              ++++         ++                 ++              ++

 For more information about this error, try `rustc --explain E0106`.
-error: could not compile `minigrep` (lib) due to previous error
+error: could not compile `minigrep` (lib) due to 1 previous error
--- a/listings/ch13-functional-features/listing-13-03/output.txt
+++ b/listings/ch13-functional-features/listing-13-03/output.txt
@@ -23,4 +23,4 @@ note: closure parameter defined here
  |                            ^

 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `closure-example` (bin "closure-example") due to previous error
+error: could not compile `closure-example` (bin "closure-example") due to 1 previous error
--- a/listings/ch13-functional-features/listing-13-08/output.txt
+++ b/listings/ch13-functional-features/listing-13-08/output.txt
@@ -12,4 +12,4 @@ error[E0507]: cannot move out of `value`, a captured variable in an `FnMut` clos
   |                              ^^^^^ move occurs because `value` has type `String`, which does not implement the `Copy` trait

 For more information about this error, try `rustc --explain E0507`.
-error: could not compile `rectangles` (bin "rectangles") due to previous error
+error: could not compile `rectangles` (bin "rectangles") due to 1 previous error
--- a/listings/ch14-more-about-cargo/output-only-02-add-one/add/add_one/src/lib.rs
+++ b/listings/ch14-more-about-cargo/output-only-02-add-one/add/add_one/src/lib.rs
@@ -1,8 +1,14 @@
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
 #[cfg(test)]
 mod tests {
+    use super::*;
+
    #[test]
    fn it_works() {
-        let result = 2 + 2;
+        let result = add(2, 2);
        assert_eq!(result, 4);
    }
 }
--- a/listings/ch15-smart-pointers/listing-15-03/output.txt
+++ b/listings/ch15-smart-pointers/listing-15-03/output.txt
@@ -14,4 +14,4 @@ help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to break the cycle
  |               ++++    +

 For more information about this error, try `rustc --explain E0072`.
-error: could not compile `cons-list` (bin "cons-list") due to previous error
+error: could not compile `cons-list` (bin "cons-list") due to 1 previous error
--- a/listings/ch15-smart-pointers/listing-15-09/output.txt
+++ b/listings/ch15-smart-pointers/listing-15-09/output.txt
@@ -7,4 +7,4 @@ error[E0614]: type `MyBox<{integer}>` cannot be dereferenced
   |                   ^^

 For more information about this error, try `rustc --explain E0614`.
-error: could not compile `deref-example` (bin "deref-example") due to previous error
+error: could not compile `deref-example` (bin "deref-example") due to 1 previous error
--- a/listings/ch15-smart-pointers/listing-15-15/output.txt
+++ b/listings/ch15-smart-pointers/listing-15-15/output.txt
@@ -12,4 +12,4 @@ help: consider using `drop` function
   |     +++++ ~

 For more information about this error, try `rustc --explain E0040`.
-error: could not compile `drop-example` (bin "drop-example") due to previous error
+error: could not compile `drop-example` (bin "drop-example") due to 1 previous error
--- a/listings/ch15-smart-pointers/listing-15-17/output.txt
+++ b/listings/ch15-smart-pointers/listing-15-17/output.txt
@@ -11,4 +11,4 @@ error[E0382]: use of moved value: `a`
   |                              ^ value used here after move

 For more information about this error, try `rustc --explain E0382`.
-error: could not compile `cons-list` (bin "cons-list") due to previous error
+error: could not compile `cons-list` (bin "cons-list") due to 1 previous error
--- a/listings/ch15-smart-pointers/listing-15-21/output.txt
+++ b/listings/ch15-smart-pointers/listing-15-21/output.txt
@@ -12,4 +12,4 @@ help: consider changing this to be a mutable reference
   |             ~~~~~~~~~

 For more information about this error, try `rustc --explain E0596`.
-error: could not compile `limit-tracker` (lib test) due to previous error
+error: could not compile `limit-tracker` (lib test) due to 1 previous error
--- a/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/output.txt
+++ b/listings/ch15-smart-pointers/no-listing-01-cant-borrow-immutable-as-mutable/output.txt
@@ -12,4 +12,4 @@ help: consider changing this to be mutable
  |         +++

 For more information about this error, try `rustc --explain E0596`.
-error: could not compile `borrowing` (bin "borrowing") due to previous error
+error: could not compile `borrowing` (bin "borrowing") due to 1 previous error
--- a/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/output.txt
+++ b/listings/ch15-smart-pointers/output-only-01-comparing-to-reference/output.txt
@@ -20,4 +20,4 @@ error[E0277]: can't compare `{integer}` with `&{integer}`
  = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)

 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `deref-example` (bin "deref-example") due to previous error
+error: could not compile `deref-example` (bin "deref-example") due to 1 previous error
--- a/listings/ch16-fearless-concurrency/listing-16-03/output.txt
+++ b/listings/ch16-fearless-concurrency/listing-16-03/output.txt
@@ -22,4 +22,4 @@ help: to force the closure to take ownership of `v` (and any other referenced va
  |                                ++++

 For more information about this error, try `rustc --explain E0373`.
-error: could not compile `threads` (bin "threads") due to previous error
+error: could not compile `threads` (bin "threads") due to 1 previous error
--- a/listings/ch16-fearless-concurrency/listing-16-09/output.txt
+++ b/listings/ch16-fearless-concurrency/listing-16-09/output.txt
@@ -17,4 +17,4 @@ help: consider cloning the value if the performance cost is acceptable
   |                    ++++++++

 For more information about this error, try `rustc --explain E0382`.
-error: could not compile `message-passing` (bin "message-passing") due to previous error
+error: could not compile `message-passing` (bin "message-passing") due to 1 previous error
--- a/listings/ch16-fearless-concurrency/listing-16-13/output.txt
+++ b/listings/ch16-fearless-concurrency/listing-16-13/output.txt
@@ -13,4 +13,4 @@ error[E0382]: borrow of moved value: `counter`
   |                             ^^^^^^^ value borrowed here after move

 For more information about this error, try `rustc --explain E0382`.
-error: could not compile `shared-state` (bin "shared-state") due to previous error
+error: could not compile `shared-state` (bin "shared-state") due to 1 previous error
--- a/listings/ch16-fearless-concurrency/listing-16-14/output.txt
+++ b/listings/ch16-fearless-concurrency/listing-16-14/output.txt
@@ -22,7 +22,7 @@ note: required because it's used within this closure
 11 |         let handle = thread::spawn(move || {
   |                                    ^^^^^^^
 note: required by a bound in `spawn`
-  --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:682:1
+  --> /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:678:1

 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `shared-state` (bin "shared-state") due to previous error
+error: could not compile `shared-state` (bin "shared-state") due to 1 previous error
--- a/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt
+++ b/listings/ch16-fearless-concurrency/output-only-01-move-drop/output.txt
@@ -15,4 +15,4 @@ error[E0382]: use of moved value: `v`
   |          ^ value used here after move

 For more information about this error, try `rustc --explain E0382`.
-error: could not compile `threads` (bin "threads") due to previous error
+error: could not compile `threads` (bin "threads") due to 1 previous error
--- a/listings/ch17-oop/listing-17-10/output.txt
+++ b/listings/ch17-oop/listing-17-10/output.txt
@@ -10,4 +10,4 @@ error[E0277]: the trait bound `String: Draw` is not satisfied
  = note: required for the cast from `Box<String>` to `Box<dyn Draw>`

 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `gui` (bin "gui") due to previous error
+error: could not compile `gui` (bin "gui") due to 1 previous error
--- a/listings/ch18-patterns-and-matching/listing-18-05/output.txt
+++ b/listings/ch18-patterns-and-matching/listing-18-05/output.txt
@@ -12,4 +12,4 @@ error[E0308]: mismatched types
             found tuple `(_, _)`

 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `patterns` (bin "patterns") due to previous error
+error: could not compile `patterns` (bin "patterns") due to 1 previous error
--- a/listings/ch18-patterns-and-matching/listing-18-08/output.txt
+++ b/listings/ch18-patterns-and-matching/listing-18-08/output.txt
@@ -15,4 +15,4 @@ help: you might want to use `let else` to handle the variant that isn't matched
  |                                     ++++++++++++++++

 For more information about this error, try `rustc --explain E0005`.
-error: could not compile `patterns` (bin "patterns") due to previous error
+error: could not compile `patterns` (bin "patterns") due to 1 previous error
--- a/listings/ch18-patterns-and-matching/listing-18-25/output.txt
+++ b/listings/ch18-patterns-and-matching/listing-18-25/output.txt
@@ -8,4 +8,4 @@ error: `..` can only be used once per tuple pattern
  |          |
  |          previously used here

-error: could not compile `patterns` (bin "patterns") due to previous error
+error: could not compile `patterns` (bin "patterns") due to 1 previous error
--- a/listings/ch19-advanced-features/listing-19-05/output.txt
+++ b/listings/ch19-advanced-features/listing-19-05/output.txt
@@ -14,4 +14,4 @@ error[E0499]: cannot borrow `*values` as mutable more than once at a time
  |     returning this value requires that `*values` is borrowed for `'1`

 For more information about this error, try `rustc --explain E0499`.
-error: could not compile `unsafe-example` (bin "unsafe-example") due to previous error
+error: could not compile `unsafe-example` (bin "unsafe-example") due to 1 previous error
--- a/listings/ch19-advanced-features/listing-19-20/output.txt
+++ b/listings/ch19-advanced-features/listing-19-20/output.txt
@@ -15,4 +15,4 @@ help: use the fully-qualified path to the only available implementation
   |                                           +++++++       +

 For more information about this error, try `rustc --explain E0790`.
-error: could not compile `traits-example` (bin "traits-example") due to previous error
+error: could not compile `traits-example` (bin "traits-example") due to 1 previous error
--- a/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/output.txt
+++ b/listings/ch19-advanced-features/no-listing-02-impl-outlineprint-for-point/output.txt
@@ -15,4 +15,4 @@ note: required by a bound in `OutlinePrint`
   |                     ^^^^^^^^^^^^ required by this bound in `OutlinePrint`

 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `traits-example` (bin "traits-example") due to previous error
+error: could not compile `traits-example` (bin "traits-example") due to 1 previous error
--- a/listings/ch19-advanced-features/no-listing-18-returns-closure/output.txt
+++ b/listings/ch19-advanced-features/no-listing-18-returns-closure/output.txt
@@ -17,4 +17,4 @@ help: box the return type, and wrap all of the returned values in `Box::new`
  |

 For more information about this error, try `rustc --explain E0746`.
-error: could not compile `functions-example` (lib) due to previous error
+error: could not compile `functions-example` (lib) due to 1 previous error
--- a/listings/ch19-advanced-features/output-only-01-missing-unsafe/output.txt
+++ b/listings/ch19-advanced-features/output-only-01-missing-unsafe/output.txt
@@ -9,4 +9,4 @@ error[E0133]: call to unsafe function is unsafe and requires unsafe function or
  = note: consult the function's documentation for information on how to avoid undefined behavior

 For more information about this error, try `rustc --explain E0133`.
-error: could not compile `unsafe-example` (bin "unsafe-example") due to previous error
+error: could not compile `unsafe-example` (bin "unsafe-example") due to 1 previous error
--- a/listings/ch20-web-server/listing-20-12/output.txt
+++ b/listings/ch20-web-server/listing-20-12/output.txt
@@ -7,4 +7,4 @@ error[E0433]: failed to resolve: use of undeclared type `ThreadPool`
   |                ^^^^^^^^^^ use of undeclared type `ThreadPool`

 For more information about this error, try `rustc --explain E0433`.
-error: could not compile `hello` (bin "hello") due to previous error
+error: could not compile `hello` (bin "hello") due to 1 previous error
--- a/listings/ch20-web-server/listing-20-17/output.txt
+++ b/listings/ch20-web-server/listing-20-17/output.txt
@@ -18,4 +18,4 @@ note: consider changing this parameter type in method `new` to borrow instead if
   |        --- in this method       ^^^^^^^^^^^^^^^^^^^ this parameter takes ownership of the value

 For more information about this error, try `rustc --explain E0382`.
-error: could not compile `hello` (lib) due to previous error
+error: could not compile `hello` (lib) due to 1 previous error
--- a/listings/ch20-web-server/listing-20-22/output.txt
+++ b/listings/ch20-web-server/listing-20-22/output.txt
@@ -9,7 +9,7 @@ error[E0507]: cannot move out of `worker.thread` which is behind a mutable refer
   |             move occurs because `worker.thread` has type `JoinHandle<()>`, which does not implement the `Copy` trait
   |
 note: `JoinHandle::<T>::join` takes ownership of the receiver `self`, which moves `worker.thread`
-  --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:1652:17
+  --> /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:1649:17

 For more information about this error, try `rustc --explain E0507`.
-error: could not compile `hello` (lib) due to previous error
+error: could not compile `hello` (lib) due to 1 previous error
--- a/listings/ch20-web-server/no-listing-01-define-threadpool-struct/output.txt
+++ b/listings/ch20-web-server/no-listing-01-define-threadpool-struct/output.txt
@@ -7,4 +7,4 @@ error[E0599]: no function or associated item named `new` found for struct `Threa
   |                            ^^^ function or associated item not found in `ThreadPool`

 For more information about this error, try `rustc --explain E0599`.
-error: could not compile `hello` (bin "hello") due to previous error
+error: could not compile `hello` (bin "hello") due to 1 previous error
--- a/listings/ch20-web-server/no-listing-02-impl-threadpool-new/output.txt
+++ b/listings/ch20-web-server/no-listing-02-impl-threadpool-new/output.txt
@@ -7,4 +7,4 @@ error[E0599]: no method named `execute` found for struct `ThreadPool` in the cur
   |         -----^^^^^^^ method not found in `ThreadPool`

 For more information about this error, try `rustc --explain E0599`.
-error: could not compile `hello` (bin "hello") due to previous error
+error: could not compile `hello` (bin "hello") due to 1 previous error
--- a/listings/ch20-web-server/no-listing-04-update-worker-definition/output.txt
+++ b/listings/ch20-web-server/no-listing-04-update-worker-definition/output.txt
@@ -7,7 +7,7 @@ error[E0599]: no method named `join` found for enum `Option` in the current scop
   |                           ^^^^ method not found in `Option<JoinHandle<()>>`
   |
 note: the method `join` exists on the type `JoinHandle<()>`
-  --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:1652:5
+  --> /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:1649:5
 help: consider using `Option::expect` to unwrap the `JoinHandle<()>` value, panicking if the value is an `Option::None`
   |
 52 |             worker.thread.expect("REASON").join().unwrap();
--- a/2
+++ b/2
@@ -1 +1 @@
-1.75
+1.76
--- a/src/ch03-02-data-types.md
+++ b/src/ch03-02-data-types.md
@@ -352,7 +352,8 @@ cargo run
 -->

 ```console
-thread 'main' panicked at 'index out of bounds: the len is 5 but the index is 10', src/main.rs:19:19
+thread 'main' panicked at src/main.rs:19:19:
+index out of bounds: the len is 5 but the index is 10
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 ```

--- a/src/ch05-01-defining-structs.md
+++ b/src/ch05-01-defining-structs.md
@@ -278,7 +278,7 @@ implement them on any type, including unit-like structs.
 >   |
 >
 > For more information about this error, try `rustc --explain E0106`.
-> error: could not compile `structs` due to 2 previous errors
+> error: could not compile `structs` (bin "structs") due to 2 previous errors
 > ```
 >
 > In Chapter 10, we’ll discuss how to fix these errors so you can store
--- a/src/ch09-01-unrecoverable-errors-with-panic.md
+++ b/src/ch09-01-unrecoverable-errors-with-panic.md
@@ -117,24 +117,25 @@ check the backtrace number mentioned in the text below the listing

 ```console
 $ RUST_BACKTRACE=1 cargo run
-thread 'main' panicked at 'index out of bounds: the len is 3 but the index is 99', src/main.rs:4:5
+thread 'main' panicked at src/main.rs:4:6:
+index out of bounds: the len is 3 but the index is 99
 stack backtrace:
   0: rust_begin_unwind
-             at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/std/src/panicking.rs:584:5
+             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
   1: core::panicking::panic_fmt
-             at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/core/src/panicking.rs:142:14
+             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
   2: core::panicking::panic_bounds_check
-             at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/core/src/panicking.rs:84:5
+             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:208:5
   3: <usize as core::slice::index::SliceIndex<[T]>>::index
-             at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/core/src/slice/index.rs:242:10
+             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/slice/index.rs:255:10
   4: core::slice::index::<impl core::ops::index::Index<I> for [T]>::index
-             at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/core/src/slice/index.rs:18:9
+             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/slice/index.rs:18:9
   5: <alloc::vec::Vec<T,A> as core::ops::index::Index<I>>::index
-             at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/alloc/src/vec/mod.rs:2591:9
+             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/vec/mod.rs:2770:9
   6: panic::main
-             at ./src/main.rs:4:5
+             at ./src/main.rs:4:6
   7: core::ops::function::FnOnce::call_once
-             at /rustc/e092d0b6b43f2de967af0887873151bb1c0b18d3/library/core/src/ops/function.rs:248:5
+             at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
 note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
 ```

--- a/src/ch09-02-recoverable-errors-with-result.md
+++ b/src/ch09-02-recoverable-errors-with-result.md
@@ -188,9 +188,8 @@ copy and paste relevant text
 -->

 ```text
-thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os {
-code: 2, kind: NotFound, message: "No such file or directory" }',
-src/main.rs:4:49
+thread 'main' panicked at src/main.rs:4:49:
+called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }
 ```

 Similarly, the `expect` method lets us also choose the `panic!` error message.
@@ -216,9 +215,8 @@ copy and paste relevant text
 -->

 ```text
-thread 'main' panicked at 'hello.txt should be included in this project: Os {
-code: 2, kind: NotFound, message: "No such file or directory" }',
-src/main.rs:5:10
+thread 'main' panicked at src/main.rs:5:10:
+hello.txt should be included in this project: Os { code: 2, kind: NotFound, message: "No such file or directory" }
 ```

 In production-quality code, most Rustaceans choose `expect` rather than
--- a/src/ch15-01-box.md
+++ b/src/ch15-01-box.md
@@ -193,7 +193,7 @@ after doing automatic regeneration, look at listings/ch15-smart-pointers/listing
 -->

 ```text
-help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to make `List` representable
+help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to break the cycle
  |
 2 |     Cons(i32, Box<List>),
  |               ++++    +
--- a/src/title-page.md
+++ b/src/title-page.md
@@ -2,7 +2,7 @@

 *by Steve Klabnik and Carol Nichols, with contributions from the Rust Community*

-This version of the text assumes you’re using Rust 1.75.0 (released 2023-12-28)
+This version of the text assumes you’re using Rust 1.76.0 (released 2024-02-08)
 or later. See the [“Installation” section of Chapter 1][install]<!-- ignore -->
 to install or update Rust.
@@ -1 +1 @@
 .75
 .76