Fix broken links related to rustc_borrowck (#1259)

* Fix broken links in region_inference.md

* Fix broken links in lifetime_parameters.md

Author: JohnTitor

Diff for: src/borrow_check/region_inference.md

@@ -5,7 +5,7 @@
 The MIR-based region checking code is located in [the `rustc_mir::borrow_check`
 module][nll].
 
-[nll]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/index.html
+[nll]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/index.html
 
 The MIR-based region analysis consists of two major functions:
 
@@ -38,10 +38,10 @@ The MIR-based region analysis consists of two major functions:
 
 [cp]: ./region_inference/constraint_propagation.md
 [fvb]: ../appendix/background.md#free-vs-bound
-[`replace_regions_in_mir`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/nll/fn.replace_regions_in_mir.html
-[`compute_regions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/nll/fn.compute_regions.html
-[`RegionInferenceContext`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/region_infer/struct.RegionInferenceContext.html
-[`solve`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/region_infer/struct.RegionInferenceContext.html#method.solve
+[`replace_regions_in_mir`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/nll/fn.replace_regions_in_mir.html
+[`compute_regions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/nll/fn.compute_regions.html
+[`RegionInferenceContext`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html
+[`solve`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#method.solve
 [NLL RFC]: https://rust-lang.github.io/rfcs/2094-nll.html
 [MIR type checker]: ./type_check.md
 
@@ -68,7 +68,7 @@ the moment.
 
 TODO: write about _how_ these regions are computed.
 
-[`UniversalRegions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/universal_regions/struct.UniversalRegions.html
+[`UniversalRegions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/universal_regions/struct.UniversalRegions.html
 
 <a name="region-variables"></a>
 
@@ -115,7 +115,7 @@ common sorts of constraints are:
 2. Liveness constraints. Each region needs to be live at points where it can be
    used. These constraints are collected by [`generate_constraints`].
 
-[`generate_constraints`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/constraint_generation/fn.generate_constraints.html
+[`generate_constraints`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/constraint_generation/fn.generate_constraints.html
 
 ## Inference Overview
 
@@ -219,13 +219,13 @@ Here are some of the fields of the struct:
 - [`closure_bounds_mapping`]: used for propagating region constraints from
   closures back out to the creator of the closure.
 
-[`constraints`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/region_infer/struct.RegionInferenceContext.html#structfield.constraints
-[`liveness_constraints`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/region_infer/struct.RegionInferenceContext.html#structfield.liveness_constraints
+[`constraints`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#structfield.constraints
+[`liveness_constraints`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#structfield.liveness_constraints
 [`location`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/mir/struct.Location.html
-[`universal_regions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/region_infer/struct.RegionInferenceContext.html#structfield.universal_regions
-[`universal_region_relations`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/region_infer/struct.RegionInferenceContext.html#structfield.universal_region_relations
-[`type_tests`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/region_infer/struct.RegionInferenceContext.html#structfield.type_tests
-[`closure_bounds_mapping`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/region_infer/struct.RegionInferenceContext.html#structfield.closure_bounds_mapping
+[`universal_regions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#structfield.universal_regions
+[`universal_region_relations`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#structfield.universal_region_relations
+[`type_tests`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#structfield.type_tests
+[`closure_bounds_mapping`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#structfield.closure_bounds_mapping
 
 TODO: should we discuss any of the others fields? What about the SCCs?
 
@@ -234,6 +234,6 @@ inference. This is done by calling the [`solve`] method on the context. This
 is where we call [`propagate_constraints`] and then check the resulting type
 tests and universal regions, as discussed above.
 
-[`propagate_constraints`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/region_infer/struct.RegionInferenceContext.html#method.propagate_constraints
-[`check_type_tests`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/region_infer/struct.RegionInferenceContext.html#method.check_type_tests
-[`check_universal_regions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir/borrow_check/region_infer/struct.RegionInferenceContext.html#method.check_universal_regions
+[`propagate_constraints`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#method.propagate_constraints
+[`check_type_tests`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#method.check_type_tests
+[`check_universal_regions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#method.check_universal_regions

Diff for: src/borrow_check/region_inference/lifetime_parameters.md

@@ -31,9 +31,9 @@ relationships to one another. So if you have e.g. `where 'a: 'b`, then
 the [`UniversalRegionRelations`] struct would track that `'a: 'b` is
 known to hold (which could be tested with the [`outlives`] function.
 
-[`UniversalRegions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir_borrowck/universal_regions/struct.UniversalRegions.html
-[`UniversalRegionRelations`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir_borrowck/type_check/free_region_relations/struct.UniversalRegionRelations.html
-[`outlives`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir_borrowck/type_check/free_region_relations/struct.UniversalRegionRelations.html#method.outlives
+[`UniversalRegions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/universal_regions/struct.UniversalRegions.html
+[`UniversalRegionRelations`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/type_check/free_region_relations/struct.UniversalRegionRelations.html
+[`outlives`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/type_check/free_region_relations/struct.UniversalRegionRelations.html#method.outlives
 
 ## Everything is a region variable
 
@@ -58,7 +58,7 @@ type). These subdivisions are not important for the topics discussed
 here, but become important when we consider [closure constraint
 propagation](./closure_constraints.html), so we discuss them there.
 
-[`RegionClassification`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir_borrowck/universal_regions/enum.RegionClassification.html#variant.Local
+[`RegionClassification`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/universal_regions/enum.RegionClassification.html#variant.Local
 
 ## Universal lifetimes as the elements of a region's value
 
@@ -88,7 +88,7 @@ liveness constraint (i.e., `'a` must extend until the end of
 itself). In the code, these liveness constraints are setup in
 [`init_free_and_bound_regions`].
 
-[`init_free_and_bound_regions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir_borrowck/region_infer/struct.RegionInferenceContext.html#method.init_free_and_bound_regions
+[`init_free_and_bound_regions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#method.init_free_and_bound_regions
 
 ## Propagating outlives constraints for universal regions
 
@@ -124,4 +124,4 @@ not, as in our example, that is an error. This check is done in the
 universal regions, inspects their final value, and tests against the
 declared [`UniversalRegionRelations`].
 
-[`check_universal_regions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_mir_borrowck/region_infer/struct.RegionInferenceContext.html#method.check_universal_regions
+[`check_universal_regions`]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_borrowck/region_infer/struct.RegionInferenceContext.html#method.check_universal_regions