Update Rust version and output

.github/workflows/main.yml

@@ -12,8 +12,8 @@ jobs:
     - name: Install Rust
       run: |
         rustup set profile minimal
-        rustup toolchain install 1.41.0 -c rust-docs
-        rustup default 1.41.0
+        rustup toolchain install 1.48 -c rust-docs
+        rustup default 1.48
     - name: Install mdbook
       run: |
         mkdir bin

ci/dictionary.txt

@@ -318,6 +318,7 @@ nonadministrators
 nondeterministic
 nonequality
 nongeneric
+noplayground
 NotFound
 nsprust
 null's
@@ -470,6 +471,7 @@ supertraits
 TcpListener
 TcpStream
 templating
+test_harness
 test's
 TextField
 That'd

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

@@ -8,14 +8,14 @@ error[E0308]: mismatched types
   --> src/main.rs:22:21
    |
 22 |     match guess.cmp(&secret_number) {
-   |                     ^^^^^^^^^^^^^^ expected struct `std::string::String`, found integer
+   |                     ^^^^^^^^^^^^^^ expected struct `String`, found integer
    |
-   = note: expected reference `&std::string::String`
+   = note: expected reference `&String`
               found reference `&{integer}`
 
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `guessing_game`.
+error: could not compile `guessing_game`
 
 To learn more, run the command again with --verbose.

listings/ch02-guessing-game-tutorial/no-listing-02-without-expect/output.txt

@@ -9,4 +9,6 @@ warning: unused `std::result::Result` that must be used
    = note: `#[warn(unused_must_use)]` on by default
    = note: this `Result` may be an `Err` variant, which should be handled
 
+warning: 1 warning emitted
+
     Finished dev [unoptimized + debuginfo] target(s) in 0.59s

listings/ch03-common-programming-concepts/no-listing-01-variables-are-immutable/output.txt

@@ -15,6 +15,6 @@ error[E0384]: cannot assign twice to immutable variable `x`
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0384`.
-error: could not compile `variables`.
+error: could not compile `variables`
 
 To learn more, run the command again with --verbose.

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

@@ -9,6 +9,6 @@ error[E0308]: mismatched types
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `variables`.
+error: could not compile `variables`
 
 To learn more, run the command again with --verbose.

listings/ch03-common-programming-concepts/no-listing-15-invalid-array-access/output.txt

@@ -4,12 +4,12 @@ error: this operation will panic at runtime
  --> src/main.rs:5:19
   |
 5 |     let element = a[index];
-  |                   ^^^^^^^^ index out of bounds: the len is 5 but the index is 10
+  |                   ^^^^^^^^ index out of bounds: the length is 5 but the index is 10
   |
   = note: `#[deny(unconditional_panic)]` on by default
 
 error: aborting due to previous error
 
-error: could not compile `arrays`.
+error: could not compile `arrays`
 
 To learn more, run the command again with --verbose.

listings/ch03-common-programming-concepts/no-listing-19-statements-vs-expressions/output.txt

@@ -1,9 +1,32 @@
 $ cargo run
    Compiling functions v0.1.0 (file:///projects/functions)
+error[E0658]: `let` expressions in this position are experimental
+ --> src/main.rs:2:14
+  |
+2 |     let x = (let y = 6);
+  |              ^^^^^^^^^
+  |
+  = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
+
 error: expected expression, found statement (`let`)
  --> src/main.rs:2:14
   |
 2 |     let x = (let y = 6);
-  |              ^^^
+  |              ^^^^^^^^^
+  |
+  = note: variable declaration using `let` is a statement
+
+warning: unnecessary parentheses around assigned value
+ --> src/main.rs:2:13
+  |
+2 |     let x = (let y = 6);
+  |             ^^^^^^^^^^^ help: remove these parentheses
   |
-  = note: variable declaration using `let` is a statement
+  = note: `#[warn(unused_parens)]` on by default
+
+error: aborting due to 2 previous errors; 1 warning emitted
+
+For more information about this error, try `rustc --explain E0658`.
+error: could not compile `functions`
+
+To learn more, run the command again with --verbose.

listings/ch03-common-programming-concepts/no-listing-23-statements-dont-return-values/output.txt

@@ -13,6 +13,6 @@ error[E0308]: mismatched types
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `functions`.
+error: could not compile `functions`
 
 To learn more, run the command again with --verbose.

listings/ch03-common-programming-concepts/no-listing-28-if-condition-must-be-bool/output.txt

@@ -9,6 +9,6 @@ error[E0308]: mismatched types
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `branches`.
+error: could not compile `branches`
 
 To learn more, run the command again with --verbose.

listings/ch03-common-programming-concepts/no-listing-31-arms-must-return-same-type/output.txt

@@ -1,6 +1,6 @@
 $ cargo run
    Compiling branches v0.1.0 (file:///projects/branches)
-error[E0308]: if and else have incompatible types
+error[E0308]: `if` and `else` have incompatible types
  --> src/main.rs:4:44
   |
 4 |     let number = if condition { 5 } else { "six" };
@@ -11,6 +11,6 @@ error[E0308]: if and else have incompatible types
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `branches`.
+error: could not compile `branches`
 
 To learn more, run the command again with --verbose.

listings/ch03-common-programming-concepts/output-only-01-no-type-annotations/output.txt

@@ -9,6 +9,6 @@ error[E0282]: type annotations needed
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0282`.
-error: could not compile `no_type_annotations`.
+error: could not compile `no_type_annotations`
 
 To learn more, run the command again with --verbose.

listings/ch04-understanding-ownership/listing-04-06/output.txt

@@ -4,13 +4,13 @@ error[E0596]: cannot borrow `*some_string` as mutable, as it is behind a `&` ref
  --> src/main.rs:8:5
   |
 7 | fn change(some_string: &String) {
-  |                        ------- help: consider changing this to be a mutable reference: `&mut std::string::String`
+  |                        ------- help: consider changing this to be a mutable reference: `&mut String`
 8 |     some_string.push_str(", world");
   |     ^^^^^^^^^^^ `some_string` is a `&` reference, so the data it refers to cannot be borrowed as mutable
 
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0596`.
-error: could not compile `ownership`.
+error: could not compile `ownership`
 
 To learn more, run the command again with --verbose.

listings/ch04-understanding-ownership/no-listing-04-cant-use-after-move/output.txt

@@ -4,7 +4,7 @@ error[E0382]: borrow of moved value: `s1`
  --> src/main.rs:5:28
   |
 2 |     let s1 = String::from("hello");
-  |         -- move occurs because `s1` has type `std::string::String`, which does not implement the `Copy` trait
+  |         -- move occurs because `s1` has type `String`, which does not implement the `Copy` trait
 3 |     let s2 = s1;
   |              -- value moved here
 4 | 
@@ -14,6 +14,6 @@ error[E0382]: borrow of moved value: `s1`
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0382`.
-error: could not compile `ownership`.
+error: could not compile `ownership`
 
 To learn more, run the command again with --verbose.

listings/ch04-understanding-ownership/no-listing-10-multiple-mut-not-allowed/output.txt

@@ -14,6 +14,6 @@ error[E0499]: cannot borrow `s` as mutable more than once at a time
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0499`.
-error: could not compile `ownership`.
+error: could not compile `ownership`
 
 To learn more, run the command again with --verbose.

listings/ch04-understanding-ownership/no-listing-12-immutable-and-mutable-not-allowed/output.txt

@@ -15,6 +15,6 @@ error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immuta
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0502`.
-error: could not compile `ownership`.
+error: could not compile `ownership`
 
 To learn more, run the command again with --verbose.

listings/ch04-understanding-ownership/no-listing-14-dangling-reference/output.txt

@@ -4,13 +4,17 @@ error[E0106]: missing lifetime specifier
  --> src/main.rs:5:16
   |
 5 | fn dangle() -> &String {
-  |                ^ help: consider giving it a 'static lifetime: `&'static`
+  |                ^ 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
+  |
+5 | fn dangle() -> &'static String {
+  |                ^^^^^^^^
 
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0106`.
-error: could not compile `ownership`.
+error: could not compile `ownership`
 
 To learn more, run the command again with --verbose.

listings/ch04-understanding-ownership/no-listing-19-slice-error/output.txt

@@ -15,6 +15,6 @@ error[E0502]: cannot borrow `s` as mutable because it is also borrowed as immuta
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0502`.
-error: could not compile `ownership`.
+error: could not compile `ownership`
 
 To learn more, run the command again with --verbose.

listings/ch05-using-structs-to-structure-related-data/listing-05-11/output.txt

@@ -9,10 +9,11 @@ error[E0277]: `Rectangle` doesn't implement `std::fmt::Display`
    = help: the trait `std::fmt::Display` is not implemented for `Rectangle`
    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
    = note: required by `std::fmt::Display::fmt`
+   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `structs`.
+error: could not compile `structs`
 
 To learn more, run the command again with --verbose.

listings/ch05-using-structs-to-structure-related-data/no-listing-02-reference-in-struct/output.txt

@@ -4,17 +4,30 @@ error[E0106]: missing lifetime specifier
  --> src/main.rs:2:15
   |
 2 |     username: &str,
-  |               ^ expected lifetime parameter
+  |               ^ expected named lifetime parameter
+  |
+help: consider introducing a named lifetime parameter
+  |
+1 | struct User<'a> {
+2 |     username: &'a str,
+  |
 
 error[E0106]: missing lifetime specifier
  --> src/main.rs:3:12
   |
 3 |     email: &str,
-  |            ^ expected lifetime parameter
+  |            ^ expected named lifetime parameter
+  |
+help: consider introducing a named lifetime parameter
+  |
+1 | struct User<'a> {
+2 |     username: &str,
+3 |     email: &'a str,
+  |
 
 error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0106`.
-error: could not compile `structs`.
+error: could not compile `structs`
 
 To learn more, run the command again with --verbose.

listings/ch05-using-structs-to-structure-related-data/output-only-01-debug/output.txt

@@ -1,18 +1,19 @@
 $ cargo run
    Compiling structs v0.1.0 (file:///projects/structs)
-error[E0277]: `Rectangle` doesn't implement `std::fmt::Debug`
+error[E0277]: `Rectangle` doesn't implement `Debug`
   --> src/main.rs:12:31
    |
 12 |     println!("rect1 is {:?}", rect1);
    |                               ^^^^^ `Rectangle` cannot be formatted using `{:?}`
    |
-   = help: the trait `std::fmt::Debug` is not implemented for `Rectangle`
-   = note: add `#[derive(Debug)]` or manually implement `std::fmt::Debug`
+   = help: the trait `Debug` is not implemented for `Rectangle`
+   = note: add `#[derive(Debug)]` or manually implement `Debug`
    = note: required by `std::fmt::Debug::fmt`
+   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `structs`.
+error: could not compile `structs`
 
 To learn more, run the command again with --verbose.

listings/ch06-enums-and-pattern-matching/no-listing-07-cant-use-option-directly/output.txt

@@ -1,16 +1,16 @@
 $ cargo run
    Compiling enums v0.1.0 (file:///projects/enums)
-error[E0277]: cannot add `std::option::Option<i8>` to `i8`
+error[E0277]: cannot add `Option<i8>` to `i8`
  --> src/main.rs:5:17
   |
 5 |     let sum = x + y;
-  |                 ^ no implementation for `i8 + std::option::Option<i8>`
+  |                 ^ no implementation for `i8 + Option<i8>`
   |
-  = help: the trait `std::ops::Add<std::option::Option<i8>>` is not implemented for `i8`
+  = help: the trait `Add<Option<i8>>` is not implemented for `i8`
 
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0277`.
-error: could not compile `enums`.
+error: could not compile `enums`
 
 To learn more, run the command again with --verbose.

listings/ch06-enums-and-pattern-matching/no-listing-10-non-exhaustive-match/output.txt

@@ -1,16 +1,17 @@
 $ cargo run
    Compiling enums v0.1.0 (file:///projects/enums)
 error[E0004]: non-exhaustive patterns: `None` not covered
- --> src/main.rs:3:15
-  |
-3 |         match x {
-  |               ^ pattern `None` not covered
-  |
-  = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+   --> src/main.rs:3:15
+    |
+3   |         match x {
+    |               ^ pattern `None` not covered
+    |
+    = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+    = note: the matched value is of type `Option<i32>`
 
 error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0004`.
-error: could not compile `enums`.
+error: could not compile `enums`
 
 To learn more, run the command again with --verbose.

listings/ch07-managing-growing-projects/listing-07-01/src/lib.rs

@@ -1,4 +1,3 @@
-// ANCHOR: here
 mod front_of_house {
     mod hosting {
         fn add_to_waitlist() {}
@@ -14,6 +13,3 @@ mod front_of_house {
         fn take_payment() {}
     }
 }
-// ANCHOR_END: here
-
-fn main() {}

listings/ch07-managing-growing-projects/listing-07-03/output.txt

@@ -4,17 +4,29 @@ error[E0603]: module `hosting` is private
  --> src/lib.rs:9:28
   |
 9 |     crate::front_of_house::hosting::add_to_waitlist();
-  |                            ^^^^^^^
+  |                            ^^^^^^^ private module
+  |
+note: the module `hosting` is defined here
+ --> src/lib.rs:2:5
+  |
+2 |     mod hosting {
+  |     ^^^^^^^^^^^
 
 error[E0603]: module `hosting` is private
   --> src/lib.rs:12:21
    |
 12 |     front_of_house::hosting::add_to_waitlist();
-   |                     ^^^^^^^
+   |                     ^^^^^^^ private module
+   |
+note: the module `hosting` is defined here
+  --> src/lib.rs:2:5
+   |
+2  |     mod hosting {
+   |     ^^^^^^^^^^^
 
 error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0603`.
-error: could not compile `restaurant`.
+error: could not compile `restaurant`
 
 To learn more, run the command again with --verbose.