Update to Rust 1.86

.github/workflows/main.yml

@@ -12,8 +12,8 @@ jobs:
     - name: Install Rust
       run: |
         rustup set profile minimal
-        rustup toolchain install 1.85 -c rust-docs
-        rustup default 1.85
+        rustup toolchain install 1.86 -c rust-docs
+        rustup default 1.86
     - name: Install mdbook
       run: |
         mkdir bin
@@ -47,8 +47,8 @@ jobs:
     - name: Install Rust
       run: |
         rustup set profile minimal
-        rustup toolchain install 1.85 -c rust-docs
-        rustup default 1.85
+        rustup toolchain install 1.86 -c rust-docs
+        rustup default 1.86
     - name: Run `tools` package tests
       run: |
         cargo test

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/4eb161250e340c8f48f66e2b929ef4a5bed7c181/library/core/src/cmp.rs:964:8
+  --> /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/core/src/cmp.rs:964:8
 
 For more information about this error, try `rustc --explain E0308`.
 error: could not compile `guessing_game` (bin "guessing_game") due to 1 previous error

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/4eb161250e340c8f48f66e2b929ef4a5bed7c181/library/core/src/option.rs:572:1
- ::: /rustc/4eb161250e340c8f48f66e2b929ef4a5bed7c181/library/core/src/option.rs:576:5
+ --> /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/core/src/option.rs:572:1
+ ::: /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/core/src/option.rs:576:5
   |
   = note: not covered
   = note: the matched value is of type `Option<i32>`

listings/ch07-managing-growing-projects/listing-07-12/output.txt

@@ -1,11 +1,12 @@
 $ cargo build
    Compiling restaurant v0.1.0 (file:///projects/restaurant)
-error[E0433]: failed to resolve: use of undeclared crate or module `hosting`
+error[E0433]: failed to resolve: use of unresolved module or unlinked crate `hosting`
   --> src/lib.rs:11:9
    |
 11 |         hosting::add_to_waitlist();
-   |         ^^^^^^^ use of undeclared crate or module `hosting`
+   |         ^^^^^^^ use of unresolved module or unlinked crate `hosting`
    |
+   = help: if you wanted to use a crate named `hosting`, use `cargo add hosting` to add it to your `Cargo.toml`
 help: consider importing this module through its public re-export
    |
 10 +     use crate::hosting;

listings/ch15-smart-pointers/listing-15-15/output.txt

@@ -8,8 +8,9 @@ error[E0040]: explicit use of destructor method
    |
 help: consider using `drop` function
    |
-16 |     drop(c);
-   |     +++++ ~
+16 -     c.drop();
+16 +     drop(c);
+   |
 
 For more information about this error, try `rustc --explain E0040`.
 error: could not compile `drop-example` (bin "drop-example") due to 1 previous error

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/4eb161250e340c8f48f66e2b929ef4a5bed7c181/library/std/src/thread/mod.rs:728:1
+  --> /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/std/src/thread/mod.rs:723:1
 
 For more information about this error, try `rustc --explain E0277`.
 error: could not compile `shared-state` (bin "shared-state") due to 1 previous error

listings/ch17-async-await/listing-17-23/src/main.rs

@@ -42,7 +42,7 @@ fn main() {
                 tx.send(val).unwrap();
                 trpl::sleep(Duration::from_secs(1)).await;
             }
-        // ANCHOR: here
+            // ANCHOR: here
         };
 
         let futures: Vec<Box<dyn Future<Output = ()>>> =

listings/ch20-advanced-features/listing-20-07/output.txt

@@ -1,4 +1,5 @@
 $ cargo +nightly miri run
+Preparing a sysroot for Miri (target: aarch64-apple-darwin)... done
    Compiling unsafe-example v0.1.0 (file:///projects/unsafe-example)
     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.01s
      Running `file:///home/.rustup/toolchains/nightly/bin/cargo-miri runner target/miri/debug/unsafe-example`

listings/ch20-advanced-features/listing-20-33/output.txt

@@ -12,8 +12,8 @@ error[E0308]: mismatched types
 13 | fn returns_initialized_closure(init: i32) -> impl Fn(i32) -> i32 {
    |                                              ------------------- the found opaque type
    |
-   = note: expected opaque type `impl Fn(i32) -> i32` (opaque type at <src/main.rs:9:25>)
-              found opaque type `impl Fn(i32) -> i32` (opaque type at <src/main.rs:13:46>)
+   = note: expected opaque type `impl Fn(i32) -> i32`
+              found opaque type `impl Fn(i32) -> i32`
    = note: distinct uses of `impl Trait` result in different opaque types
 
 For more information about this error, try `rustc --explain E0308`.

listings/ch21-web-server/listing-21-22/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/4eb161250e340c8f48f66e2b929ef4a5bed7c181/library/std/src/thread/mod.rs:1876:17
+  --> /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/std/src/thread/mod.rs:1886:17
 
 For more information about this error, try `rustc --explain E0507`.
 error: could not compile `hello` (lib) due to 1 previous error

rust-toolchain

@@ -1 +1 @@
-1.85
+1.86

src/title-page.md

@@ -3,7 +3,7 @@
 _by Steve Klabnik, Carol Nichols, and Chris Krycho, with contributions from the
 Rust Community_
 
-This version of the text assumes you’re using Rust 1.85.0 (released 2025-02-17)
+This version of the text assumes you’re using Rust 1.86.0 (released 2025-04-03)
 or later with `edition = "2024"` in the *Cargo.toml* file of all projects to
 configure them to use Rust 2024 Edition idioms. See the [“Installation” section
 of Chapter 1][install]<!-- ignore --> for instructions on installing or