Update older URLs pointing to the first edition of the Book

`compiler-plugins.html` is moved into the Unstable Book.
Explanation is slightly modified to match the change.

5 files changed, 8 insertions, 8 deletions

diff --git a/src/libcore/borrow.rs b/src/libcore/borrow.rs
index 3d223465c88..61558034e63 100644
--- a/src/libcore/borrow.rs
+++ b/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.
diff --git a/src/libcore/convert.rs b/src/libcore/convert.rs
index 11a360ff900..6f3c3863fae 100644
--- a/src/libcore/convert.rs
+++ b/src/libcore/convert.rs
@@ -71,7 +71,7 @@ use str::FromStr;
 ///
 /// 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.
diff --git a/src/libcore/macros.rs b/src/libcore/macros.rs
index d68fad4972c..91ee064aaba 100644
--- a/src/libcore/macros.rs
+++ b/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
 ///
diff --git a/src/libcore/marker.rs b/src/libcore/marker.rs
index 05df84708e0..3bed425943f 100644
--- a/src/libcore/marker.rs
+++ b/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 @@ macro_rules! impls{
 /// 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)]
diff --git a/src/libcore/ops/deref.rs b/src/libcore/ops/deref.rs
index 3f4dabbbc0c..18cf20ac411 100644
--- a/src/libcore/ops/deref.rs
+++ b/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 @@ impl<'a, T: ?Sized> Deref for &'a mut T {
 ///
 /// `DerefMut` also enables ['`Deref` coercions'][coercions].
 ///
-/// [coercions]: ../../book/deref-coercions.html
+/// [coercions]: ../../book/first-edition/deref-coercions.html
 ///
 /// # Examples
 ///