Update to 1.58

.github/workflows/main.yml

@@ -12,8 +12,8 @@ jobs:
     - name: Install Rust
       run: |
         rustup set profile minimal
-        rustup toolchain install 1.57 -c rust-docs
-        rustup default 1.57
+        rustup toolchain install 1.58 -c rust-docs
+        rustup default 1.58
     - name: Install mdbook
       run: |
         mkdir bin

listings/ch02-guessing-game-tutorial/listing-02-04/output.txt

@@ -16,5 +16,30 @@ error[E0308]: mismatched types
    = note: expected reference `&String`
               found reference `&{integer}`
 
-For more information about this error, try `rustc --explain E0308`.
-error: could not compile `guessing_game` due to previous error
+error[E0283]: type annotations needed for `{integer}`
+   --> src/main.rs:8:44
+    |
+8   |     let secret_number = rand::thread_rng().gen_range(1..101);
+    |         -------------                      ^^^^^^^^^ cannot infer type for type `{integer}`
+    |         |
+    |         consider giving `secret_number` a type
+    |
+    = note: multiple `impl`s satisfying `{integer}: SampleUniform` found in the `rand` crate:
+            - impl SampleUniform for i128;
+            - impl SampleUniform for i16;
+            - impl SampleUniform for i32;
+            - impl SampleUniform for i64;
+            and 8 more
+note: required by a bound in `gen_range`
+   --> /Users/carolnichols/.cargo/registry/src/github.com-1ecc6299db9ec823/rand-0.8.3/src/rng.rs:129:12
+    |
+129 |         T: SampleUniform,
+    |            ^^^^^^^^^^^^^ required by this bound in `gen_range`
+help: consider specifying the type arguments in the function call
+    |
+8   |     let secret_number = rand::thread_rng().gen_range::<T, R>(1..101);
+    |                                                     ++++++++
+
+Some errors have detailed explanations: E0283, E0308.
+For more information about an error, try `rustc --explain E0283`.
+error: could not compile `guessing_game` due to 2 previous errors

listings/ch03-common-programming-concepts/no-listing-05-mut-cant-change-types/output.txt

@@ -3,6 +3,8 @@ $ cargo run
 error[E0308]: mismatched types
  --> src/main.rs:3:14
   |
+2 |     let mut spaces = "   ";
+  |                      ----- expected due to this value
 3 |     spaces = spaces.len();
   |              ^^^^^^^^^^^^ expected `&str`, found `usize`
 

listings/ch09-error-handling/listing-09-10/output.txt

@@ -1,16 +1,15 @@
 $ cargo run
    Compiling error-handling v0.1.0 (file:///projects/error-handling)
 error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
-   --> src/main.rs:4:36
-    |
-3   | / fn main() {
-4   | |     let f = File::open("hello.txt")?;
-    | |                                    ^ cannot use the `?` operator in a function that returns `()`
-5   | | }
-    | |_- this function should return `Result` or `Option` to accept `?`
-    |
-    = help: the trait `FromResidual<Result<Infallible, std::io::Error>>` is not implemented for `()`
-note: required by `from_residual`
+ --> src/main.rs:4:36
+  |
+3 | / fn main() {
+4 | |     let f = File::open("hello.txt")?;
+  | |                                    ^ cannot use the `?` operator in a function that returns `()`
+5 | | }
+  | |_- this function should return `Result` or `Option` to accept `?`
+  |
+  = 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` due to previous error

listings/ch19-advanced-features/listing-19-20/output.txt

@@ -7,11 +7,6 @@ error[E0283]: type annotations needed
    |                                           ^^^^^^^^^^^^^^^^^ cannot infer type
    |
    = note: cannot satisfy `_: Animal`
-note: required by `Animal::baby_name`
-  --> src/main.rs:2:5
-   |
-2  |     fn baby_name() -> String;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
 
 For more information about this error, try `rustc --explain E0283`.
 error: could not compile `traits-example` due to previous error

listings/ch20-web-server/no-listing-04-update-worker-definition/output.txt

@@ -10,13 +10,14 @@ error[E0308]: mismatched types
   --> src/lib.rs:72:22
    |
 72 |         Worker { id, thread }
-   |                      ^^^^^^
-   |                      |
-   |                      expected enum `Option`, found struct `JoinHandle`
-   |                      help: try using a variant of the expected enum: `Some(thread)`
+   |                      ^^^^^^ expected enum `Option`, found struct `JoinHandle`
    |
    = note: expected enum `Option<JoinHandle<()>>`
             found struct `JoinHandle<_>`
+help: try wrapping the expression in `Some`
+   |
+72 |         Worker { id, Some(thread) }
+   |                      +++++      +
 
 Some errors have detailed explanations: E0308, E0599.
 For more information about an error, try `rustc --explain E0308`.

rust-toolchain

@@ -1 +1 @@
-1.57
+1.58

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 1.57 (released 2021-12-02)
+This version of the text assumes you’re using Rust 1.58 (released 2022-01-13)
 or later. See the [“Installation” section of Chapter 1][install]<!-- ignore -->
 to install or update Rust.