- Improve wording
- Use relative links
- Use a proper list instead of a wall of text
- Improve examples

Co-authored-by: Camelid <camelidcamel@gmail.com>

Co-authored-by: Camelid <camelidcamel@gmail.com>

Note that float methods in `core::intrinsics` weren't converted because
they are only defined in `std` (using language item hacks).

Turn inlining threshold into optional values to make it possible to
configure different defaults depending on the current mir-opt-level.

check_mistyped_turbofish_with_multiple_type_params was previously
expecting type arguments between angle brackets, which is not right, as
we can also see const expressions. We now use generic argument parser
instead of type parser.

Test with one, two, and three generic arguments added to check
consistentcy between

1. check_no_chained_comparison: Called after parsing a nested binop
   application like `x < A > ...` where angle brackets are interpreted as
   binary operators and `A` is an expression.

2. check_mistyped_turbofish_with_multiple_type_params: called by
   `parse_full_stmt` when we expect to see a semicolon after parsing an
   expression but don't see it.

   (In `T2<1, 2>::C;`, the expression is `T2 < 1`)

This adds recovery when in array type syntax user writes

    [X; Y<Z, ...>]

instead of

    [X; Y::<Z, ...>]

Fixes rust-lang#82566

Note that whenever we parse an expression and know that the next token
cannot be `,`, we should be calling
check_mistyped_turbofish_with_multiple_type_params for this recovery.
Previously we only did this for statement parsing (e.g. `let x = f<a,
b>;`). We now also do it when parsing the length field in array type
syntax.

As a followup to [this comment] in rust-lang#82420, this patch teaches rustdoc
how to display WASI.

[this comment]: rust-lang#82420 (comment)

methods

…cetics

Convert primitives in the standard library to intra-doc links

Blocked on rust-lang#80181. I forgot that this needs to wait for the beta bump so the standard library can be documented with `doc --stage 0`.

Notably I didn't convert `core::slice` because it's like 50 links and I got scared 😨

Update intra-doc link documentation to match the implementation

r? `@Manishearth`
cc `@camelid` `@m-ou-se`

Relevant PRs:
- rust-lang#74489
- rust-lang#80181
- rust-lang#76078
- rust-lang#77519
- rust-lang#73101

Relevant issues:
- rust-lang#78800
- rust-lang#77200
- rust-lang#77199 / rust-lang#54191

I haven't documented things that I consider 'just bugs', like rust-lang#77732, but I have documented features that aren't implemented, like rust-lang#78800.

Add option to enable MIR inlining independently of mir-opt-level

Add `-Zinline-mir` option that enables MIR inlining independently of the
current MIR opt level. The primary use-case is enabling MIR inlining on the
default MIR opt level.

Turn inlining thresholds into optional values to make it possible to configure
different defaults depending on the current mir-opt-level (although thresholds
are yet to be used in such a manner).

…i-obk

Add incomplete feature gate for inherent associate types.

Mentored by ``````@oli-obk``````

So far the only change is that instead of giving an automatic error, the following code compiles:

```rust
struct Foo;

impl Foo {
    type Bar = isize;
}
```

The backend work to make it actually usable isn't there yet. In particular, this:

```rust
let x : Foo::Bar;
```

will give you:

```sh
error[E0223]: ambiguous associated type
  --> /$RUSTC_DIR/src/test/ui/assoc-inherent.rs:15:13
   |
LL |     let x : Foo::Bar;
   |             ^^^^^^^^ help: use fully-qualified syntax: `<Foo as Trait>::Bar`
```

Fix turbofish recovery with multiple generic args

This consists of two commits, each can be individually reviewed.

- First commit fixes the issue in [this comment](rust-lang#82566 (comment)).
- Second commit fixes rust-lang#82566

---

r? ````@estebank````

Teach rustdoc how to display WASI.

As a followup to [this comment] in rust-lang#82420, this patch teaches rustdoc
how to display WASI.

[this comment]: rust-lang#82420 (comment)

r? `@alexcrichton`

Get TyCtxt from self instead of passing as argument in AutoTraitFinder

First contribution 🦀, let me know if anything is amiss.

Fix rust-lang#82137.

Erase late bound regions to avoid ICE

Fixes rust-lang#82612, which is caused by rust-lang#81769.

r? `@estebank`

…=jonas-schievink

⬆️ rust-analyzer

Update books

## reference

2 commits in 361367c126290ac17cb4089f8d38fd8b2ac43f98..3b6fe80c205d2a2b5dc8a276192bbce9eeb9e9cf
2021-02-15 09:58:13 -0800 to 2021-02-22 22:09:17 -0800
- Add an extra fn() entry to the variance table in the subtyping chapter (rust-lang/reference#874)
- Turbofish: Explain what the example is of. (rust-lang/reference#966)

## book

28 commits in db5e8a5105aa22979490dce30e33b68d8645761d..0f87daf683ae3de3cb725faecb11b7e7e89f0e5a
2021-02-12 16:58:20 -0500 to 2021-03-01 08:54:04 -0500
- Ohhh the should_panic was for mdbook test. Oops
- Fix bad regex in the update rustc script and regenerate broken output
- Clarify that we only mentioned unwrap_or_else, but haven't explained it
- Add ferris to some listings that don't compile. Fixes rust-lang/book#2598
- Remove fancy quote from a code comment
- Panic now points at our code, not stdlib slice code
- Disable playground on thread::sleep examples
- Disable playground button on listings in ch 12 that use CLI args
- Reword ambiguous sentence. Fixes rust-lang/book#2317.
- Rename shoes_in_my_size to shoes_in_size to be a better example
- Fix visible "ANCHOR: here" in listing 13-21 (rust-lang/book#2628)
- minor clarification about deriving Copy and Clone (rust-lang/book#2627)
- Clarify relationship of trait to mock object
- Fix "message" that should be "method"
- Fix rust-lang/book#2625 (rust-lang/book#2626)
- fix misleading hash claim (rust-lang/book#2621)
- Make link syntax consistent and word wrap
- Added hyperlinks to Appendices
- Use console syntax highlighting in some more places
- Merge remote-tracking branch 'origin/pr/2615'
- Fix broken blockquote
- Update one more bit of output caught by the update rust script
- Update and clarify some text affected by the rand update
- Update lock files and output
- Update error output for changes to chapter 10 listings
- Merge remote-tracking branch 'origin/pr/2542'
- Tweak wording in for loop explanation
- Merge remote-tracking branch 'origin/pr/2460'

## rust-by-example

1 commits in 551cc4bc8394feccea6acd21f86d9a4e1d2271a0..3e0d98790c9126517fa1c604dc3678f396e92a27
2021-02-03 17:12:37 -0300 to 2021-02-25 08:23:10 -0300
- Make flow_control/for/.into_iter() example run (rust-lang/rust-by-example#1415)

## rustc-dev-guide

530 commits in 7adfab42bab045a848126895c2f1e09927c1331a..c431f8c29a41413dddcb3bfa0d71c9cabe366317
2020-04-08 08:52:05 +0200 to 2021-02-28 16:35:20 -0500

... Many updates.

## embedded-book

1 commits in 4cf7981696a85c3e633076c6401611bd3f6346c4..a96d096cffe5fa2c84af1b4b61e1492f839bb2e1
2021-02-11 10:55:22 +0000 to 2021-02-17 08:08:52 +0000
- Add note about using more recent openocd interface file. Closes rust-embedded/book#277 and rust-embedded/book#263  (rust-embedded/book#284)