Currently, if you attempt to run ui tests in a vendored build, you will
see this failure

```
---- [ui] tests/ui/issues/issue-21763.rs stdout ----
diff of stderr:

8          = note: required because it appears within the type `(Rc<()>, Rc<()>)`
9          = note: required for `hashbrown::raw::RawTable<(Rc<()>, Rc<()>)>` to implement `Send`
10      note: required because it appears within the type `hashbrown::map::HashMap<Rc<()>, Rc<()>, RandomState>`
-         --> $HASHBROWN_SRC_LOCATION
+         --> /rust/deps/hashbrown/src/map.rs:190:12
12      note: required because it appears within the type `HashMap<Rc<()>, Rc<()>>`
13        --> $SRC_DIR/std/src/collections/hash/map.rs:LL:COL
14      note: required by a bound in `foo`
```

This happend because the code that attempts to remap
`HASHBROWN_SRC_LOCATION` expects it to be under `hashbrown-$version`,
which is the case in a normal cargo registry, but not when vendor, where
by default crates may not have the version in their directory name.

This change passes `--versioned-dirs` to `cargo vendor` to enforce that
every crate includes the version in the subdir name, which fixes the ui
test and brings `--enable-vendor` builds closer to normal ones.

…spans.

This makes `-Zprint-type-sizes`'s output easier to read, because the
name of an `async fn` is more immediately recognizable than its span.

I also deleted the comment "FIXME(eddyb) should use `def_span`." because
it appears to have already been fixed by commit 67727aa.

also extend the const fn reachability test

Fixes rust-lang#81974

…ion(..)` but now is not

Fixes rust-lang#84727

Fixes rust-lang#92979

…orkingjubilee

Fix a typo in the alloc::string::String docs

extend comments for reachability set computation

I hope this is right. :) Please review carefully.

r? `@tmiasko`
Cc `@oli-obk` `@saethlin`

…nur-ozkan

fix(bootstrap/dist): use versioned dirs when vendoring

Currently, if you attempt to run ui tests in a vendored build, you will
see this failure

```
---- [ui] tests/ui/issues/issue-21763.rs stdout ----
diff of stderr:

8          = note: required because it appears within the type `(Rc<()>, Rc<()>)`
9          = note: required for `hashbrown::raw::RawTable<(Rc<()>, Rc<()>)>` to implement `Send`
10      note: required because it appears within the type `hashbrown::map::HashMap<Rc<()>, Rc<()>, RandomState>`
-         --> $HASHBROWN_SRC_LOCATION
+         --> /rust/deps/hashbrown/src/map.rs:190:12
12      note: required because it appears within the type `HashMap<Rc<()>, Rc<()>>`
13        --> $SRC_DIR/std/src/collections/hash/map.rs:LL:COL
14      note: required by a bound in `foo`
```

This happens because the code that attempts to remap
`HASHBROWN_SRC_LOCATION` expects it to be under `hashbrown-$version`,
which is the case in a normal cargo registry, but not when vendoring, where
by default crates may not have the version in their directory name.

This change passes `--versioned-dirs` to `cargo vendor` to enforce that
every crate includes the version in the subdir name, which fixes the ui
test and brings `--enable-vendor` builds closer to normal ones.

Update stdarch submodule

r? ``@Amanieu``

…-errors

In `pretty_print_type()`, print `async fn` futures' paths instead of spans.

This makes `-Zprint-type-sizes`'s output easier to read, because the name of an `async fn` is more immediately recognizable than its span. This change will also synergize with my other `-Zprint-type-sizes` PR rust-lang#122922 which prints the type of child futures being awaited.

I also deleted the comment "FIXME(eddyb) should use `def_span`." because it appears to have already been fixed by commit 67727aa.

…ler-errors

Add regression tests for rust-lang#101903

Closes rust-lang#101903

See https://doc.rust-lang.org/1.77.0/nightly-rustc/rustc_lint/opaque_hidden_inferred_bound/static.OPAQUE_HIDDEN_INFERRED_BOUND.html#example

… r=workingjubilee

Port backtrace dylib-dep test to a ui test

Original test: [dylib-dep](https://github.com/rust-lang/backtrace-rs/tree/6fa4b85b9962c3e1be8c2e5cc605cd078134152b/crates/dylib-dep)
Part of rust-lang#122899.

Update books

## rust-lang/edition-guide

1 commits in e1eead1181a691e56299294d5f1d62fe7a26d317..98b33e9a441457b0a491fe1be90e7de64eafc3e5
2024-03-23 14:17:26 UTC to 2024-03-23 14:17:26 UTC

- remove indication that C string literals don't exist yet (rust-lang/edition-guide#295)

## rust-lang/reference

4 commits in 5afb503a4c1ea3c84370f8f4c08a1cddd1cdf6ad..984b36eca4b9293df04d5ba4eb5c4f77db0f51dc
2024-03-25 14:05:19 UTC to 2024-03-19 20:01:14 UTC

- Fix typo of shebang (rust-lang/reference#1486)
- Document importing `main` (rust-lang/reference#1461)
- add grammar for `associated_type_bounds` in reference (rust-lang/reference#1481)
- Literal expressions: fix mistake in the definition of unicode escapes (rust-lang/reference#1483)

## rust-lang/rust-by-example

1 commits in e093099709456e6fd74fecd2505fdf49a2471c10..7601e0c5ad29d5bd3b518700ea63fddfff5915a7
2024-03-17 21:37:25 UTC to 2024-03-17 21:37:25 UTC

- Update enum_use.md to use a more neutral theme (rust-lang/rust-by-example#1828)

## rust-lang/rustc-dev-guide

12 commits in 8a5d647f19b08998612146b1cb2ca47083db63e0..ffa246b7fd95a96e1cd54883e613aed42c32547d
2024-03-23 07:44:42 UTC to 2024-03-11 18:17:28 UTC

- [MCP 723] Rename AstConv to HIR ty lowering (rust-lang/rustc-dev-guide#1916)
- add chapter to summary (rust-lang/rustc-dev-guide#1947)
- document difference between solvers + new solver normalization (rust-lang/rustc-dev-guide#1945)
- Fix broken link in chapter '1. How to build and run the compiler' (rust-lang/rustc-dev-guide#1946)
- typo (rust-lang/rustc-dev-guide#1944)
- Reflect rustc_codegen_cranelift move (rust-lang/rustc-dev-guide#1941)
- Update rustdoc-internals.md (rust-lang/rustc-dev-guide#1911)
- Update test-implementation.md (rust-lang/rustc-dev-guide#1937)
- Extract Bootstrap into its own section (rust-lang/rustc-dev-guide#1939)
- typos (rust-lang/rustc-dev-guide#1938)
- More updates for recent diagnostics changes. (rust-lang/rustc-dev-guide#1936)
- Update bibliography.md (rust-lang/rustc-dev-guide#1912)

`Instance` is `Copy`

No reason to take it by value; it was confusing `@rcvalle` to see it being mutated when it's also being passed by ref in some places.

…bilee

did I mention that tests are super cool?

Fixes rust-lang#81974
Fixes rust-lang#84727
Fixes rust-lang#92979