Update books

## rust-lang/edition-guide

2 commits in 34fca48ed284525b2f124bf93c51af36d6685492..bbffb074e16bef89772818b400b6c76a65eac126
2023-12-11 18:46:08 UTC to 2023-12-06 21:38:11 UTC

- Update links and text about rustfix. (rust-lang/edition-guide#287)
- Add C-string literals. (rust-lang/edition-guide#286)

## rust-embedded/book

1 commits in 22bca3d0f6e9b9b556689b54ce96f25b46ecd1b3..3f9df2b9885c6741365da2e12ed6662cd0e827d6
2023-12-11 21:22:20 UTC to 2023-12-11 21:22:20 UTC

- rust-lang#363 (rust-embedded/book#364)

## rust-lang/nomicon

2 commits in 83d015105e6d490fc30d6c95da1e56152a50e228..f6bd083c4ccfc4ce6699b8b4154e3c45c5a27a8c
2023-12-10 03:19:24 UTC to 2023-12-10 03:18:32 UTC

- Minor improvements to Vec (rust-lang/nomicon#415)
- Improve the `PhantomData` table (rust-lang/nomicon#417)

## rust-lang/reference

1 commits in 692d216f5a1151e8852ddb308ba64040e634c876..f9f5b5babd95515e7028c32d6ca4d9790f64c146
2023-12-10 16:16:17 UTC to 2023-12-10 16:16:17 UTC

- Document object unsafety of async-fn-in-trait  (rust-lang/reference#1435)

## rust-lang/rust-by-example

11 commits in da0a06aada31a324ae84a9eaee344f6a944b9683..4c2b24ff9d9cf19f2fcff799a3a49b9a2c50ae8e
2023-12-18 13:02:23 UTC to 2023-12-10 12:10:43 UTC

- nested destructure example for structs (rust-lang/rust-by-example#1787)
- Make example in pipe.md compatible with both Windows and Unix-type system with less code (rust-lang/rust-by-example#1780)
- Add i18n support (rust-lang/rust-by-example#1760)
- Add pub keyword before mod bar definition in doc.md (rust-lang/rust-by-example#1785)
- Update address and title of github source of rust playground in playground.md (rust-lang/rust-by-example#1784)
- Update example in ffi.md to make it compatible with both Windows OS and Unit-type systems (rust-lang/rust-by-example#1781)
- Update the path of html_playground_url in playground.md (rust-lang/rust-by-example#1783)
- Update unit_testing.md ignore running the last example because it's test (rust-lang/rust-by-example#1782)
- Update example in fs.md and use target_family instead of target_os (rust-lang/rust-by-example#1779)
- Update the example in pipe.md to make it compatible with both Windows OS and Unix-type systems (rust-lang/rust-by-example#1778)
- Update the example in fs.md to ensure compatibility with both Window and Unix-type systems. (rust-lang/rust-by-example#1777)

## rust-lang/rustc-dev-guide

7 commits in 904bb5aa7b21adad58ffae610e2830c7b0f813b0..0610665a8687b1b0aa037917a1598b9f2a21e3ef
2023-12-17 17:21:38 UTC to 2023-12-05 16:40:26 UTC

- add a mailmap (rust-lang/rustc-dev-guide#1839)
- Move Editions chapter to "Contributing to Rust". (rust-lang/rustc-dev-guide#1838)
- Remove feature edition fields. (rust-lang/rustc-dev-guide#1836)
- Add a chapter on editions. (rust-lang/rustc-dev-guide#1835)
- Remove mentions of plugin lints (rust-lang/rustc-dev-guide#1833)
- Fix typo of unused_parens (rust-lang/rustc-dev-guide#1832)
- Replace experts map with reviewers from triagebot (rust-lang/rustc-dev-guide#1831)

…ural-normalize, r=lcnr

Use alias-eq in structural normalization

We don't need to register repeated normalizes-to goals in a loop in structural normalize, but instead we can piggyback on the fact that alias-eq will already normalize aliases until they are rigid.

This fixes rust-lang/trait-system-refactor-initiative#78.

r? lcnr

Adjust the ignore-compare-mode-next-solver for hangs

Some new tests hang, some old tests don't hang.

r? lcnr or anyone in `@rust-lang/initiative-trait-system-refactor`

…r-errors

Add the function body span to StableMIR

We were missing the body span, which differs from the function definition span, since it covers the entire function body.

r? `@ouz-a`