fixes rust-lang#107676.

refer to new home

The module has since been made its own crate...
see 2d75a33.

…xos, r=Mark-Simulacrum

Patch `build/rustfmt/lib/*.so` for NixOS

fixes rust-lang#107676.

…, r=notriddle

Improve JS function itemTypeFromName code a bit

Very small code improvement replacing a `for` loop with `findIndex` method.

r? ````@notriddle````

…-meta-description, r=camelid,GuillaumeGomez

rustdoc: account for intra-doc links in `<meta name="description">`

Similar to rust-lang#86451, but for the SEO descriptions instead of the search descriptions.

…ike, r=jyn514

Document `PointerLike`

I forgot to document this, and even though it's currently more of an implementation detail, the old doc was kinda embarrassing 😅

avoid mixing accesses of ptrs derived from a mutable ref and parent ptrs

``@Vanille-N`` is working on a successor for Stacked Borrows. It will mostly accept strictly more code than Stacked Borrows did, with one exception: the following pattern no longer works.
```rust
let mut root = 6u8;
let mref = &mut root;
let ptr = mref as *mut u8;
*ptr = 0; // Write
assert_eq!(root, 0); // Parent Read
*ptr = 0; // Attempted Write
```
This worked in Stacked Borrows kind of by accident: when doing the "parent read", under SB we Disable `mref`, but the raw ptrs derived from it remain usable. The fact that we can still use the "children" of a reference that is no longer usable is quite nasty and leads to some undesirable effects (in particular it is the major blocker for resolving rust-lang/unsafe-code-guidelines#257). So in Tree Borrows we no longer do that; instead, reading from `root` makes `mref` and all its children read-only.

Due to other improvements in Tree Borrows, the entire Miri test suite still passes with this new behavior, and even the entire libcore and liballoc test suite, except for these 2 cases this PR fixes. Both of these involve code where the programmer wrote `&mut` but then used pointers derived from that reference in ways that alias with the parent pointer, which arguably is violating uniqueness. They are fixed by properly using raw pointers throughout.

fix UB in ancient test

This seems to go back all the way to the [original version of this test](https://github.com/rust-lang/rust/blob/b9aa9def858cfc66d411972b10ce3d98479acd78/src/test/run-pass/regions-mock-trans.rs) from ten years ago... ``@nikomatsakis`` trip down memory lane? ;)

Clearly deallocation is a form of mutation so doing it to a (pointer derived from a) shared reference cannot be legal. Let's use mutable references instead.

…ght, r=GuillaumeGomez

rustdoc: use tighter line height in h1 and h2

This keeps the line height for body text the same, as required by WCAG, but for headers, it makes sense to have wrapped lines be a bit tighter packed.

## Before

![image](https://user-images.githubusercontent.com/1593513/218332683-88a02467-7811-4e6b-81f8-67dded691465.png)

## After

![image](https://user-images.githubusercontent.com/1593513/218332698-a1b2a265-0658-4306-8473-b835f663172d.png)