Auto merge of rust-lang#69822 - Centril:rollup-360ca2j, r=Centril

Rollup of 8 pull requests

Successful merges:

 - rust-lang#69422 (Remove use of `unwrap()` from save-analysis)
 - rust-lang#69548 (Turn trailing tokens in `assert!()` into hard errors)
 - rust-lang#69561 (Clean up unstable book)
 - rust-lang#69599 (check_binding_alt_eq_ty: improve precision wrt. `if let`)
 - rust-lang#69641 (Update books)
 - rust-lang#69776 (Fix & test leak of some BTreeMap nodes on panic during `into_iter`)
 - rust-lang#69805 (resolve: Modernize some naming)
 - rust-lang#69810 (test(bindings_after_at): add dynamic drop tests for bindings_after_at)

Failed merges:

r? @ghost

Author: bors

src/doc/embedded-book

@@ -2,7 +2,7 @@
 
 The tracking issue for this feature is: [#49147]
 
-[#44109]: https://github.com/rust-lang/rust/issues/49147
+[#49147]: https://github.com/rust-lang/rust/issues/49147
 
 ------------------------
 

src/doc/nomicon

@@ -1,8 +1,8 @@
 # `impl_trait_in_bindings`
 
-The tracking issue for this feature is: [#34511]
+The tracking issue for this feature is: [#63065]
 
-[#34511]: https://github.com/rust-lang/rust/issues/34511
+[#63065]: https://github.com/rust-lang/rust/issues/63065
 
 ------------------------
 

src/doc/reference

@@ -0,0 +1,5 @@
+# `link_cfg`
+
+This feature is internal to the Rust compiler and is not intended for general use.
+
+------------------------

src/doc/rust-by-example

@@ -2,7 +2,7 @@
 
 The tracking issue for this feature is: [#41517]
 
-[#41417]: https://github.com/rust-lang/rust/issues/41517
+[#41517]: https://github.com/rust-lang/rust/issues/41517
 
 ------------------------
 

src/doc/unstable-book/src/language-features/const-in-array-repeat-expressions.md

@@ -2,7 +2,7 @@
 
 The tracking issue for this feature is [#60405]
 
-[60405]: https://github.com/rust-lang/rust/issues/60405
+[#60405]: https://github.com/rust-lang/rust/issues/60405
 
 ----