Auto merge of #42623 - VBChunguk:fix-older-urls, r=steveklabnik

Update older URLs pointing to the first edition of the Book

Fixes #42589.

src/libcore/borrow.rs

@@ -31,7 +31,7 @@
 /// `Borrow` is very similar to, but different than, `AsRef`. See
 /// [the book][book] for more.
 ///
-/// [book]: ../../book/borrow-and-asref.html
+/// [book]: ../../book/first-edition/borrow-and-asref.html
 #[stable(feature = "rust1", since = "1.0.0")]
 pub trait Borrow<Borrowed: ?Sized> {
     /// Immutably borrows from an owned value.

src/libcore/convert.rs

@@ -71,7 +71,7 @@
 ///
 /// See [the book][book] for a more detailed comparison.
 ///
-/// [book]: ../../book/borrow-and-asref.html
+/// [book]: ../../book/first-edition/borrow-and-asref.html
 /// [`Borrow`]: ../../std/borrow/trait.Borrow.html
 ///
 /// **Note: this trait must not fail**. If the conversion can fail, use a
@@ -305,7 +305,7 @@ pub trait Into<T>: Sized {
 /// [`String`]: ../../std/string/struct.String.html
 /// [`Into<U>`]: trait.Into.html
 /// [`from`]: trait.From.html#tymethod.from
-/// [book]: ../../book/error-handling.html
+/// [book]: ../../book/first-edition/error-handling.html
 #[stable(feature = "rust1", since = "1.0.0")]
 pub trait From<T>: Sized {
     /// Performs the conversion.

src/libcore/macros.rs

@@ -54,7 +54,7 @@ macro_rules! panic {
 ///
 /// [`panic!`]: macro.panic.html
 /// [`debug_assert!`]: macro.debug_assert.html
-/// [testing]: ../book/testing.html
+/// [testing]: ../book/first-edition/testing.html
 ///
 /// # Examples
 ///

src/libcore/marker.rs

@@ -85,7 +85,7 @@ impl<T: ?Sized> !Send for *mut T { }
 ///                         // be made into an object
 /// ```
 ///
-/// [trait object]: ../../book/trait-objects.html
+/// [trait object]: ../../book/first-edition/trait-objects.html
 #[stable(feature = "rust1", since = "1.0.0")]
 #[lang = "sized"]
 #[rustc_on_unimplemented = "`{Self}` does not have a constant size known at compile-time"]
@@ -493,7 +493,7 @@ fn default() -> $t<T> {
 /// types. We track the Rust type using a phantom type parameter on
 /// the struct `ExternalResource` which wraps a handle.
 ///
-/// [FFI]: ../../book/ffi.html
+/// [FFI]: ../../book/first-edition/ffi.html
 ///
 /// ```
 /// # #![allow(dead_code)]

src/libcore/ops/deref.rs

@@ -13,7 +13,7 @@
 ///
 /// `Deref` also enables ['`Deref` coercions'][coercions].
 ///
-/// [coercions]: ../../book/deref-coercions.html
+/// [coercions]: ../../book/first-edition/deref-coercions.html
 ///
 /// # Examples
 ///
@@ -71,7 +71,7 @@ fn deref(&self) -> &T { *self }
 ///
 /// `DerefMut` also enables ['`Deref` coercions'][coercions].
 ///
-/// [coercions]: ../../book/deref-coercions.html
+/// [coercions]: ../../book/first-edition/deref-coercions.html
 ///
 /// # Examples
 ///

src/libproc_macro/lib.rs

@@ -21,7 +21,7 @@
 //! This functionality is intended to be expanded over time as more surface
 //! area for macro authors is stabilized.
 //!
-//! See [the book](../book/procedural-macros.html) for more.
+//! See [the book](../book/first-edition/procedural-macros.html) for more.
 
 #![crate_name = "proc_macro"]
 #![stable(feature = "proc_macro_lib", since = "1.15.0")]

src/librustc/diagnostics.rs

@@ -405,7 +405,7 @@ impl Quux for Foo { }
 Lifetime elision in implementation headers was part of the lifetime elision
 RFC. It is, however, [currently unimplemented][iss15872].
 
-[book-le]: https://doc.rust-lang.org/nightly/book/lifetimes.html#lifetime-elision
+[book-le]: https://doc.rust-lang.org/nightly/book/first-edition/lifetimes.html#lifetime-elision
 [iss15872]: https://github.com/rust-lang/rust/issues/15872
 "##,
 
@@ -501,7 +501,7 @@ fn main() {
 }
 ```
 
-See also https://doc.rust-lang.org/book/unsafe.html
+See also https://doc.rust-lang.org/book/first-edition/unsafe.html
 "##,
 
 // This shouldn't really ever trigger since the repeated value error comes first
@@ -666,7 +666,7 @@ fn foo<T: MyTransmutableType>(x: Vec<T>) {
 #![no_std]
 ```
 
-See also https://doc.rust-lang.org/book/no-stdlib.html
+See also https://doc.rust-lang.org/book/first-edition/no-stdlib.html
 "##,
 
 E0261: r##"
@@ -1779,7 +1779,7 @@ fn main() {
 ```
 
 To understand better how closures work in Rust, read:
-https://doc.rust-lang.org/book/closures.html
+https://doc.rust-lang.org/book/first-edition/closures.html
 "##,
 
 E0580: r##"

src/librustc_borrowck/diagnostics.rs

@@ -144,7 +144,7 @@ fn main() {
 If you wish to learn more about ownership in Rust, start with the chapter in the
 Book:
 
-https://doc.rust-lang.org/book/ownership.html
+https://doc.rust-lang.org/book/first-edition/ownership.html
 "##,
 
 E0383: r##"
@@ -366,8 +366,8 @@ fn main() {
 
 Please note that in rust, you can either have many immutable references, or one
 mutable reference. Take a look at
-https://doc.rust-lang.org/stable/book/references-and-borrowing.html for more
-information. Example:
+https://doc.rust-lang.org/book/first-edition/references-and-borrowing.html
+for more information. Example:
 
 
 ```
@@ -533,7 +533,7 @@ fn foo(a: &mut i32) {
 ```
 
 For more information on the rust ownership system, take a look at
-https://doc.rust-lang.org/stable/book/references-and-borrowing.html.
+https://doc.rust-lang.org/book/first-edition/references-and-borrowing.html.
 "##,
 
 E0503: r##"
@@ -589,7 +589,7 @@ fn main() {
 ```
 
 You can find more information about borrowing in the rust-book:
-http://doc.rust-lang.org/stable/book/references-and-borrowing.html
+http://doc.rust-lang.org/book/first-edition/references-and-borrowing.html
 "##,
 
 E0504: r##"
@@ -773,7 +773,7 @@ fn main() {
 ```
 
 You can find more information about borrowing in the rust-book:
-http://doc.rust-lang.org/stable/book/references-and-borrowing.html
+http://doc.rust-lang.org/book/first-edition/references-and-borrowing.html
 "##,
 
 E0506: r##"
@@ -972,7 +972,7 @@ fn main() {
 ```
 
 You can find more information about borrowing in the rust-book:
-http://doc.rust-lang.org/stable/book/references-and-borrowing.html
+http://doc.rust-lang.org/book/first-edition/references-and-borrowing.html
 "##,
 
 E0508: r##"

src/librustc_metadata/diagnostics.rs

@@ -44,7 +44,8 @@
 extern {}
 ```
 
-See more: https://doc.rust-lang.org/book/conditional-compilation.html
+See more:
+https://doc.rust-lang.org/book/first-edition/conditional-compilation.html
 "##,
 
 E0458: r##"

src/librustc_plugin/lib.rs

@@ -47,8 +47,8 @@
 //! #![plugin(myplugin)]
 //! ```
 //!
-//! See the [Plugins Chapter](../../book/compiler-plugins.html) of the book
-//! for more examples.
+//! See the [`plugin` feature](../../unstable-book/language-features/plugin.html) of
+//! the Unstable Book for more examples.
 
 #![crate_name = "rustc_plugin"]
 #![crate_type = "dylib"]

src/librustc_typeck/diagnostics.rs

@@ -1642,7 +1642,7 @@ fn f<T>() {}
 
 It is not possible to declare type parameters on a function that has the `start`
 attribute. Such a function must have the following type signature (for more
-information: http://doc.rust-lang.org/stable/book/no-stdlib.html):
+information: http://doc.rust-lang.org/stable/book/first-edition/no-stdlib.html):
 
 ```ignore
 fn(isize, *const *const u8) -> isize;
@@ -3186,7 +3186,7 @@ impl Baz for Bar { } // Note: This is OK
 E0374: r##"
 A struct without a field containing an unsized type cannot implement
 `CoerceUnsized`. An
-[unsized type](https://doc.rust-lang.org/book/unsized-types.html)
+[unsized type](https://doc.rust-lang.org/book/first-edition/unsized-types.html)
 is any type that the compiler doesn't know the length or alignment of at
 compile time. Any struct containing an unsized type is also unsized.
 
@@ -3245,9 +3245,9 @@ impl<T, U> CoerceUnsized<Bar<U>> for Bar<T>
 `CoerceUnsized`. This only occurs when you are trying to coerce one of the
 types in your struct to another type in the struct. In this case we try to
 impl `CoerceUnsized` from `T` to `U` which are both types that the struct
-takes. An [unsized type](https://doc.rust-lang.org/book/unsized-types.html)
-is any type that the compiler doesn't know the length or alignment of at
-compile time. Any struct containing an unsized type is also unsized.
+takes. An [unsized type] is any type that the compiler doesn't know the length
+or alignment of at compile time. Any struct containing an unsized type is also
+unsized.
 
 Example of erroneous code:
 
@@ -3292,6 +3292,7 @@ fn coerce_foo<T: CoerceUnsized<U>, U>(t: T) -> Foo<U> {
 }
 ```
 
+[unsized type]: https://doc.rust-lang.org/book/first-edition/unsized-types.html
 "##,
 
 E0376: r##"
@@ -3300,7 +3301,7 @@ fn coerce_foo<T: CoerceUnsized<U>, U>(t: T) -> Foo<U> {
 already able to be coerced without an implementation of `CoerceUnsized`
 whereas a struct containing an unsized type needs to know the unsized type
 field it's containing is able to be coerced. An
-[unsized type](https://doc.rust-lang.org/book/unsized-types.html)
+[unsized type](https://doc.rust-lang.org/book/first-edition/unsized-types.html)
 is any type that the compiler doesn't know the length or alignment of at
 compile time. Any struct containing an unsized type is also unsized.
 

src/libstd/io/mod.rs

@@ -263,7 +263,7 @@
 //! [`println!`]: ../macro.println.html
 //! [`Lines`]: struct.Lines.html
 //! [`io::Result`]: type.Result.html
-//! [`?` operator]: ../../book/syntax-index.html
+//! [`?` operator]: ../../book/first-edition/syntax-index.html
 //! [`Read::read`]: trait.Read.html#tymethod.read
 
 #![stable(feature = "rust1", since = "1.0.0")]

src/libstd/macros.rs

@@ -486,7 +486,7 @@ macro_rules! module_path { () => ({ /* compiler built-in */ }) }
     /// leads to less duplicated code.
     ///
     /// The syntax given to this macro is the same syntax as [the `cfg`
-    /// attribute](../book/conditional-compilation.html).
+    /// attribute](../book/first-edition/conditional-compilation.html).
     ///
     /// # Examples
     ///

src/libstd/prelude/mod.rs

@@ -136,10 +136,10 @@
 //! [`std::string`]: ../string/index.html
 //! [`std::vec`]: ../vec/index.html
 //! [`to_owned`]: ../borrow/trait.ToOwned.html#tymethod.to_owned
-//! [book-closures]: ../../book/closures.html
-//! [book-dtor]: ../../book/drop.html
-//! [book-enums]: ../../book/enums.html
-//! [book-iter]: ../../book/iterators.html
+//! [book-closures]: ../../book/first-edition/closures.html
+//! [book-dtor]: ../../book/first-edition/drop.html
+//! [book-enums]: ../../book/first-edition/enums.html
+//! [book-iter]: ../../book/first-edition/iterators.html
 
 #![stable(feature = "rust1", since = "1.0.0")]
 

src/libtest/lib.rs

@@ -16,7 +16,7 @@
 //! benchmarks themselves) should be done via the `#[test]` and
 //! `#[bench]` attributes.
 //!
-//! See the [Testing Chapter](../book/testing.html) of the book for more details.
+//! See the [Testing Chapter](../book/first-edition/testing.html) of the book for more details.
 
 // Currently, not much of this is meant for users. It is intended to
 // support the simplest interface possible for representing and