mirror of https://github.com/rust-lang/book
Update to Rust 1.68
This commit is contained in:
Carol (Nichols || Goulding)
Carol (Nichols || Goulding)
parent
71352deb20
commit
3db049bb6a
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@ -12,8 +12,8 @@ jobs:
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- name: Install Rust
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run: |
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rustup set profile minimal
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rustup toolchain install 1.67 -c rust-docs
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rustup default 1.67
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rustup toolchain install 1.68 -c rust-docs
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rustup default 1.68
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- name: Install mdbook
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run: |
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mkdir bin
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@ -8,17 +8,20 @@ $ cargo build
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Compiling rand v0.8.5
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Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
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error[E0308]: mismatched types
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--> src/main.rs:22:21
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22 | match guess.cmp(&secret_number) {
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| --- ^^^^^^^^^^^^^^ expected struct `String`, found integer
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| |
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| arguments to this function are incorrect
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= note: expected reference `&String`
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found reference `&{integer}`
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--> src/main.rs:22:21
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22 | match guess.cmp(&secret_number) {
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| --- ^^^^^^^^^^^^^^ expected struct `String`, found integer
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| |
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| arguments to this method are incorrect
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= note: expected reference `&String`
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found reference `&{integer}`
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note: associated function defined here
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--> /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/core/src/cmp.rs:783:8
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--> /Users/carolnichols/.rustup/toolchains/1.68-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/cmp.rs:781:8
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781 | fn cmp(&self, other: &Self) -> Ordering;
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| ^^^
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For more information about this error, try `rustc --explain E0308`.
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error: could not compile `guessing_game` due to previous error
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@ -7,6 +7,12 @@ error[E0308]: mismatched types
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| ----- expected due to this value
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3 | spaces = spaces.len();
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| ^^^^^^^^^^^^ expected `&str`, found `usize`
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help: try removing the method call
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3 - spaces = spaces.len();
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3 + spaces = spaces;
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For more information about this error, try `rustc --explain E0308`.
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error: could not compile `variables` due to previous error
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@ -8,8 +8,8 @@ error[E0282]: type annotations needed
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help: consider giving `guess` an explicit type
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2 | let guess: _ = "42".parse().expect("Not a number!");
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| +++
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2 | let guess: /* Type */ = "42".parse().expect("Not a number!");
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| ++++++++++++
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For more information about this error, try `rustc --explain E0282`.
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error: could not compile `no_type_annotations` due to previous error
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@ -3,10 +3,13 @@ $ cargo run
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error[E0596]: cannot borrow `*some_string` as mutable, as it is behind a `&` reference
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--> src/main.rs:8:5
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7 | fn change(some_string: &String) {
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| ------- help: consider changing this to be a mutable reference: `&mut String`
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8 | some_string.push_str(", world");
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `some_string` is a `&` reference, so the data it refers to cannot be borrowed as mutable
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help: consider changing this to be a mutable reference
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7 | fn change(some_string: &mut String) {
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| ~~~~~~~~~~~
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For more information about this error, try `rustc --explain E0596`.
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error: could not compile `ownership` due to previous error
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@ -1,22 +1,25 @@
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$ cargo run
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Compiling enums v0.1.0 (file:///projects/enums)
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error[E0004]: non-exhaustive patterns: `None` not covered
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--> src/main.rs:3:15
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3 | match x {
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| ^ pattern `None` not covered
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--> src/main.rs:3:15
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3 | match x {
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| ^ pattern `None` not covered
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note: `Option<i32>` defined here
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--> /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/core/src/option.rs:518:1
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= note:
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/rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/core/src/option.rs:522:5: not covered
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= note: the matched value is of type `Option<i32>`
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--> /Users/carolnichols/.rustup/toolchains/1.68-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/option.rs:566:5
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562 | pub enum Option<T> {
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| ------------------
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...
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566 | None,
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| ^^^^ not covered
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= note: the matched value is of type `Option<i32>`
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
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4 ~ Some(i) => Some(i + 1),
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5 ~ None => todo!(),
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4 ~ Some(i) => Some(i + 1),
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5 ~ None => todo!(),
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For more information about this error, try `rustc --explain E0004`.
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error: could not compile `enums` due to previous error
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@ -3,11 +3,13 @@ $ cargo test
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error[E0596]: cannot borrow `self.sent_messages` as mutable, as it is behind a `&` reference
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--> src/lib.rs:58:13
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2 | fn send(&self, msg: &str);
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| ----- help: consider changing that to be a mutable reference: `&mut self`
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...
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58 | self.sent_messages.push(String::from(message));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
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help: consider changing that to be a mutable reference
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2 | fn send(&mut self, msg: &str);
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| ~~~~~~~~~
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For more information about this error, try `rustc --explain E0596`.
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error: could not compile `limit-tracker` due to previous error
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@ -3,10 +3,13 @@ $ cargo run
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error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable
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--> src/main.rs:3:13
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2 | let x = 5;
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| - help: consider changing this to be mutable: `mut x`
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3 | let y = &mut x;
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| ^^^^^^ cannot borrow as mutable
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help: consider changing this to be mutable
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2 | let mut x = 5;
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| +++
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For more information about this error, try `rustc --explain E0596`.
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error: could not compile `borrowing` due to previous error
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@ -1,30 +1,31 @@
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$ cargo run
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Compiling shared-state v0.1.0 (file:///projects/shared-state)
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error[E0277]: `Rc<Mutex<i32>>` cannot be sent between threads safely
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--> src/main.rs:11:36
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11 | let handle = thread::spawn(move || {
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| ------------- ^------
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| | |
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| ______________________|_____________within this `[closure@src/main.rs:11:36: 11:43]`
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| | |
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| | required by a bound introduced by this call
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12 | | let mut num = counter.lock().unwrap();
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13 | |
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14 | | *num += 1;
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15 | | });
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| |_________^ `Rc<Mutex<i32>>` cannot be sent between threads safely
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= help: within `[closure@src/main.rs:11:36: 11:43]`, the trait `Send` is not implemented for `Rc<Mutex<i32>>`
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--> src/main.rs:11:36
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11 | let handle = thread::spawn(move || {
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| ------------- ^------
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| | |
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| ______________________|_____________within this `[closure@src/main.rs:11:36: 11:43]`
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| | |
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| | required by a bound introduced by this call
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12 | | let mut num = counter.lock().unwrap();
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13 | |
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14 | | *num += 1;
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15 | | });
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| |_________^ `Rc<Mutex<i32>>` cannot be sent between threads safely
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= help: within `[closure@src/main.rs:11:36: 11:43]`, the trait `Send` is not implemented for `Rc<Mutex<i32>>`
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note: required because it's used within this closure
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--> src/main.rs:11:36
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11 | let handle = thread::spawn(move || {
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| ^^^^^^^
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--> src/main.rs:11:36
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11 | let handle = thread::spawn(move || {
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| ^^^^^^^
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note: required by a bound in `spawn`
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--> /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/std/src/thread/mod.rs:704:8
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= note: required by this bound in `spawn`
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--> /Users/carolnichols/.rustup/toolchains/1.68-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/mod.rs:712:8
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712 | F: Send + 'static,
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| ^^^^ required by this bound in `spawn`
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For more information about this error, try `rustc --explain E0277`.
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error: could not compile `shared-state` due to previous error
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@ -1,6 +1,6 @@
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$ cargo run
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Compiling patterns v0.1.0 (file:///projects/patterns)
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error[E0005]: refutable pattern in local binding: `None` not covered
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error[E0005]: refutable pattern in local binding
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--> src/main.rs:3:9
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3 | let Some(x) = some_option_value;
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@ -8,17 +8,8 @@ error[E0005]: refutable pattern in local binding: `None` not covered
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= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
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= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
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note: `Option<i32>` defined here
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--> /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/core/src/option.rs:518:1
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= note:
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/rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/core/src/option.rs:522:5: not covered
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= note: the matched value is of type `Option<i32>`
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help: you might want to use `if let` to ignore the variant that isn't matched
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3 | let x = if let Some(x) = some_option_value { x } else { todo!() };
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| ++++++++++ ++++++++++++++++++++++
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help: alternatively, you might want to use let else to handle the variant that isn't matched
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help: you might want to use `let else` to handle the variant that isn't matched
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3 | let Some(x) = some_option_value else { todo!() };
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| ++++++++++++++++
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@ -1,10 +1,10 @@
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$ cargo run
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Compiling traits-example v0.1.0 (file:///projects/traits-example)
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error[E0277]: `Point` doesn't implement `std::fmt::Display`
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--> src/main.rs:20:6
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--> src/main.rs:20:23
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20 | impl OutlinePrint for Point {}
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| ^^^^^^^^^^^^ `Point` cannot be formatted with the default formatter
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| ^^^^^ `Point` cannot be formatted with the default formatter
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= help: the trait `std::fmt::Display` is not implemented for `Point`
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= note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
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$ cargo check
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Checking hello v0.1.0 (file:///projects/hello)
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error[E0507]: cannot move out of `worker.thread` which is behind a mutable reference
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--> src/lib.rs:52:13
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52 | worker.thread.join().unwrap();
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| ^^^^^^^^^^^^^ ------ `worker.thread` moved due to this method call
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| |
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| move occurs because `worker.thread` has type `JoinHandle<()>`, which does not implement the `Copy` trait
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note: this function takes ownership of the receiver `self`, which moves `worker.thread`
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--> /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/std/src/thread/mod.rs:1581:17
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--> src/lib.rs:52:13
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52 | worker.thread.join().unwrap();
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| ^^^^^^^^^^^^^ ------ `worker.thread` moved due to this method call
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| |
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| move occurs because `worker.thread` has type `JoinHandle<()>`, which does not implement the `Copy` trait
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note: `JoinHandle::<T>::join` takes ownership of the receiver `self`, which moves `worker.thread`
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--> /Users/carolnichols/.rustup/toolchains/1.68-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/mod.rs:1589:17
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1589 | pub fn join(self) -> Result<T> {
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| ^^^^
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For more information about this error, try `rustc --explain E0507`.
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error: could not compile `hello` due to previous error
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$ cargo check
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Checking hello v0.1.0 (file:///projects/hello)
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error[E0599]: no method named `join` found for enum `Option` in the current scope
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--> src/lib.rs:52:27
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52 | worker.thread.join().unwrap();
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| ^^^^ method not found in `Option<JoinHandle<()>>`
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--> src/lib.rs:52:27
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52 | worker.thread.join().unwrap();
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| ^^^^ method not found in `Option<JoinHandle<()>>`
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note: the method `join` exists on the type `JoinHandle<()>`
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--> /rustc/d5a82bbd26e1ad8b7401f6a718a9c57c96905483/library/std/src/thread/mod.rs:1581:5
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--> /Users/carolnichols/.rustup/toolchains/1.68-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/mod.rs:1589:5
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1589 | pub fn join(self) -> Result<T> {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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help: consider using `Option::expect` to unwrap the `JoinHandle<()>` value, panicking if the value is an `Option::None`
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52 | worker.thread.expect("REASON").join().unwrap();
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| +++++++++++++++++
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52 | worker.thread.expect("REASON").join().unwrap();
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| +++++++++++++++++
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error[E0308]: mismatched types
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--> src/lib.rs:72:22
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@ -1 +1 @@
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1.67
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1.68
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@ -2,7 +2,7 @@
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*by Steve Klabnik and Carol Nichols, with contributions from the Rust Community*
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This version of the text assumes you’re using Rust 1.67.1 (released 2023-02-09)
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This version of the text assumes you’re using Rust 1.68.2 (released 2023-03-28)
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or later. See the [“Installation” section of Chapter 1][install]<!-- ignore -->
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to install or update Rust.
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