Update broken rustc-guide links

Recently, there has been some rearrangement of the content in the Rustc
Guide, and this commit changes the urls the match the updated guide.

src/librustc/infer/canonical.rs

@@ -29,7 +29,7 @@
 //! For a more detailed look at what is happening here, check
 //! out the [chapter in the rustc guide][c].
 //!
-//! [c]: https://rust-lang-nursery.github.io/rustc-guide/traits-canonicalization.html
+//! [c]: https://rust-lang-nursery.github.io/rustc-guide/traits/canonicalization.html
 
 use infer::{InferCtxt, InferOk, InferResult, RegionVariableOrigin, TypeVariableOrigin};
 use rustc_data_structures::indexed_vec::Idx;
@@ -274,7 +274,7 @@ impl<'cx, 'gcx, 'tcx> InferCtxt<'cx, 'gcx, 'tcx> {
     /// To get a good understanding of what is happening here, check
     /// out the [chapter in the rustc guide][c].
     ///
-    /// [c]: https://rust-lang-nursery.github.io/rustc-guide/traits-canonicalization.html#processing-the-canonicalized-query-result
+    /// [c]: https://rust-lang-nursery.github.io/rustc-guide/traits/canonicalization.html#processing-the-canonicalized-query-result
     pub fn instantiate_query_result<R>(
         &self,
         cause: &ObligationCause<'tcx>,
@@ -458,7 +458,7 @@ impl<'cx, 'gcx, 'tcx> InferCtxt<'cx, 'gcx, 'tcx> {
     /// To get a good understanding of what is happening here, check
     /// out the [chapter in the rustc guide][c].
     ///
-    /// [c]: https://rust-lang-nursery.github.io/rustc-guide/traits-canonicalization.html#canonicalizing-the-query
+    /// [c]: https://rust-lang-nursery.github.io/rustc-guide/traits/canonicalization.html#canonicalizing-the-query
     pub fn canonicalize_query<V>(&self, value: &V) -> (V::Canonicalized, CanonicalVarValues<'tcx>)
     where
         V: Canonicalize<'gcx, 'tcx>,
@@ -497,7 +497,7 @@ impl<'cx, 'gcx, 'tcx> InferCtxt<'cx, 'gcx, 'tcx> {
     /// To get a good understanding of what is happening here, check
     /// out the [chapter in the rustc guide][c].
     ///
-    /// [c]: https://rust-lang-nursery.github.io/rustc-guide/traits-canonicalization.html#canonicalizing-the-query-result
+    /// [c]: https://rust-lang-nursery.github.io/rustc-guide/traits/canonicalization.html#canonicalizing-the-query-result
     pub fn canonicalize_response<V>(
         &self,
         value: &V,

src/librustc/infer/higher_ranked/mod.rs

@@ -583,7 +583,7 @@ impl<'a, 'gcx, 'tcx> InferCtxt<'a, 'gcx, 'tcx> {
     /// For more information about how skolemization for HRTBs works, see
     /// the [rustc guide].
     ///
-    /// [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/trait-hrtb.html
+    /// [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/traits/hrtb.html
     pub fn skolemize_late_bound_regions<T>(&self,
                                            binder: &ty::Binder<T>)
                                            -> (T, SkolemizationMap<'tcx>)

src/librustc/infer/lexical_region_resolve/README.md

@@ -3,7 +3,7 @@
 > WARNING: This README is obsolete and will be removed soon! For
 > more info on how the current borrowck works, see the [rustc guide].
 
-[rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/mir-borrowck.html
+[rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/mir/borrowck.html
 
 ## Terminology
 

src/librustc/infer/region_constraints/README.md

@@ -3,7 +3,7 @@
 > WARNING: This README is obsolete and will be removed soon! For
 > more info on how the current borrowck works, see the [rustc guide].
 
-[rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/mir-borrowck.html
+[rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/mir/borrowck.html
 
 ## Terminology
 

src/librustc/middle/region.rs

@@ -14,7 +14,7 @@
 //! For more information about how MIR-based region-checking works,
 //! see the [rustc guide].
 //!
-//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/mir-borrowck.html
+//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/mir/borrowck.html
 
 use ich::{StableHashingContext, NodeIdHashingMode};
 use util::nodemap::{FxHashMap, FxHashSet};

src/librustc/mir/mod.rs

@@ -10,7 +10,7 @@
 
 //! MIR datatypes and passes. See the [rustc guide] for more info.
 //!
-//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/mir.html
+//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/mir/index.html
 
 use graphviz::IntoCow;
 use hir::def::CtorKind;

src/librustc/traits/coherence.rs

@@ -11,8 +11,8 @@
 //! See rustc guide chapters on [trait-resolution] and [trait-specialization] for more info on how
 //! this works.
 //!
-//! [trait-resolution]: https://rust-lang-nursery.github.io/rustc-guide/trait-resolution.html
+//! [trait-resolution]: https://rust-lang-nursery.github.io/rustc-guide/traits/resolution.html
-//! [trait-specialization]: https://rust-lang-nursery.github.io/rustc-guide/trait-specialization.html
+//! [trait-specialization]: https://rust-lang-nursery.github.io/rustc-guide/traits/specialization.html
 
 use hir::def_id::{DefId, LOCAL_CRATE};
 use syntax_pos::DUMMY_SP;

src/librustc/traits/mod.rs

@@ -10,7 +10,7 @@
 
 //! Trait Resolution. See [rustc guide] for more info on how this works.
 //!
-//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/trait-resolution.html
+//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/traits/resolution.html
 
 pub use self::SelectionError::*;
 pub use self::FulfillmentErrorCode::*;

src/librustc/traits/select.rs

@@ -10,7 +10,7 @@
 
 //! See [rustc guide] for more info on how this works.
 //!
-//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/trait-resolution.html#selection
+//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/traits/resolution.html#selection
 
 use self::SelectionCandidate::*;
 use self::EvaluationResult::*;
@@ -1047,7 +1047,7 @@ impl<'cx, 'gcx, 'tcx> SelectionContext<'cx, 'gcx, 'tcx> {
     // candidates. See [rustc guide] for more details.
     //
     // [rustc guide]:
-    // https://rust-lang-nursery.github.io/rustc-guide/trait-resolution.html#candidate-assembly
+    // https://rust-lang-nursery.github.io/rustc-guide/traits/resolution.html#candidate-assembly
 
     fn candidate_from_obligation<'o>(&mut self,
                                      stack: &TraitObligationStack<'o, 'tcx>)
@@ -2415,7 +2415,7 @@ impl<'cx, 'gcx, 'tcx> SelectionContext<'cx, 'gcx, 'tcx> {
     // type error.  See [rustc guide] for more details.
     //
     // [rustc guide]:
-    // https://rust-lang-nursery.github.io/rustc-guide/trait-resolution.html#confirmation
+    // https://rust-lang-nursery.github.io/rustc-guide/traits/resolution.html#confirmation
 
     fn confirm_candidate(&mut self,
                          obligation: &TraitObligation<'tcx>,

src/librustc/traits/specialize/mod.rs

@@ -17,7 +17,7 @@
 //! See the [rustc guide] for a bit more detail on how specialization
 //! fits together with the rest of the trait machinery.
 //!
-//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/trait-specialization.html
+//! [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/traits/specialization.html
 
 use super::{SelectionContext, FulfillmentContext};
 use super::util::impl_trait_ref_and_oblig;

src/librustc/ty/sty.rs

@@ -1087,7 +1087,7 @@ pub type Region<'tcx> = &'tcx RegionKind;
 ///
 /// [1]: http://smallcultfollowing.com/babysteps/blog/2013/10/29/intermingled-parameter-lists/
 /// [2]: http://smallcultfollowing.com/babysteps/blog/2013/11/04/intermingled-parameter-lists/
-/// [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/trait-hrtb.html
+/// [rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/traits/hrtb.html
 #[derive(Clone, PartialEq, Eq, Hash, Copy, RustcEncodable, RustcDecodable, PartialOrd, Ord)]
 pub enum RegionKind {
     // Region bound in a type or fn declaration which will be

src/librustc_borrowck/borrowck/README.md

@@ -3,7 +3,7 @@
 > WARNING: This README is more or less obsolete, and will be removed
 > soon! The new system is described in the [rustc guide].
 
-[rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/mir-borrowck.html
+[rustc guide]: https://rust-lang-nursery.github.io/rustc-guide/mir/borrowck.html
 
 This pass has the job of enforcing memory safety. This is a subtle
 topic. This docs aim to explain both the practice and the theory