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@lolbinarycat lolbinarycat commented Aug 21, 2025

fixes #142385

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rustbot commented Aug 21, 2025

r? @notriddle

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They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

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@rustbot rustbot added A-rustdoc-search Area: Rustdoc's search feature S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. T-rustdoc-frontend Relevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output. labels Aug 21, 2025
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rustbot commented Aug 21, 2025

Some changes occurred in HTML/CSS/JS.

cc @GuillaumeGomez, @jsha, @lolbinarycat

@lolbinarycat lolbinarycat force-pushed the rustdoc-search-generic-pointer-142385 branch from 7ea3554 to 3501e4f Compare August 21, 2025 22:50
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@bors r+

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bors commented Aug 22, 2025

📌 Commit 401f40f has been approved by notriddle

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Aug 22, 2025
jhpratt added a commit to jhpratt/rust that referenced this pull request Aug 22, 2025
…c-pointer-142385, r=notriddle

Make raw pointers work in type-based search

fixes rust-lang#142385
bors added a commit that referenced this pull request Aug 23, 2025
Rollup of 20 pull requests

Successful merges:

 - #132087 (Fix overly restrictive lifetime in `core::panic::Location::file` return type)
 - #137396 (Recover `param: Ty = EXPR`)
 - #142185 (Convert moves of references to copies in ReferencePropagation)
 - #144443 (Make target pointer width in target json an integer)
 - #144648 (Implementation: `#[feature(nonpoison_rwlock)]`)
 - #144897 (print raw lifetime idents with r#)
 - #145218 ([Debuginfo] improve enum value formatting in LLDB for better readability)
 - #145380 (Add codegen-llvm regression tests)
 - #145573 (Add an experimental unsafe(force_target_feature) attribute.)
 - #145597 (resolve: Remove `ScopeSet::Late`)
 - #145641 (On E0277, point at type that doesn't implement bound)
 - #145669 (rustdoc-search: GUI tests check for `//` in URL)
 - #145695 (Introduce ProjectionElem::try_map.)
 - #145710 (Fix the ABI parameter inconsistency issue in debug.rs for LoongArch64)
 - #145726 (Experiment: Reborrow trait)
 - #145731 (Make raw pointers work in type-based search)
 - #145736 (triagebot: Update style team reviewers)
 - #145738 (Uplift rustc_mir_transform::coverage::counters::union_find to rustc_data_structures.)
 - #145743 (doc: fix some typos in comment)
 - #145745 (tests: Ignore basic-stepping.rs on LoongArch)

Failed merges:

 - #145670 (port `sanitize` attribute to the new parsing infrastructure)

r? `@ghost`
`@rustbot` modify labels: rollup
@lolbinarycat lolbinarycat added the relnotes Marks issues that should be documented in the release notes of the next release. label Aug 23, 2025
bors added a commit that referenced this pull request Aug 23, 2025
Rollup of 28 pull requests

Successful merges:

 - #132087 (Fix overly restrictive lifetime in `core::panic::Location::file` return type)
 - #137396 (Recover `param: Ty = EXPR`)
 - #137457 (Fix host code appearing in Wasm binaries)
 - #142185 (Convert moves of references to copies in ReferencePropagation)
 - #144648 (Implementation: `#[feature(nonpoison_rwlock)]`)
 - #144897 (print raw lifetime idents with r#)
 - #145218 ([Debuginfo] improve enum value formatting in LLDB for better readability)
 - #145380 (Add codegen-llvm regression tests)
 - #145573 (Add an experimental unsafe(force_target_feature) attribute.)
 - #145597 (resolve: Remove `ScopeSet::Late`)
 - #145633 (Fix some typos in LocalKey documentation)
 - #145641 (On E0277, point at type that doesn't implement bound)
 - #145669 (rustdoc-search: GUI tests check for `//` in URL)
 - #145695 (Introduce ProjectionElem::try_map.)
 - #145710 (Fix the ABI parameter inconsistency issue in debug.rs for LoongArch64)
 - #145726 (Experiment: Reborrow trait)
 - #145731 (Make raw pointers work in type-based search)
 - #145736 (triagebot: Update style team reviewers)
 - #145738 (Uplift rustc_mir_transform::coverage::counters::union_find to rustc_data_structures.)
 - #145742 (rustdoc js: Even more typechecking improvments )
 - #145743 (doc: fix some typos in comment)
 - #145745 (tests: Ignore basic-stepping.rs on LoongArch)
 - #145747 (Refactor lint buffering to avoid requiring a giant enum)
 - #145751 (fix(lexer): Allow '-' in the frontmatter infostring continue set)
 - #145761 (Add aarch64_be-unknown-hermit target)
 - #145762 (convert strings to symbols in attr diagnostics)
 - #145763 (Ship LLVM tools for the correct target when cross-compiling)
 - #145765 (Revert suggestions for missing methods in tuples)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 7798185 into rust-lang:master Aug 23, 2025
10 checks passed
@rustbot rustbot added this to the 1.91.0 milestone Aug 23, 2025
rust-timer added a commit that referenced this pull request Aug 23, 2025
Rollup merge of #145731 - lolbinarycat:rustdoc-search-generic-pointer-142385, r=notriddle

Make raw pointers work in type-based search

fixes #142385
github-actions bot pushed a commit to rust-lang/miri that referenced this pull request Aug 24, 2025
Rollup of 28 pull requests

Successful merges:

 - rust-lang/rust#132087 (Fix overly restrictive lifetime in `core::panic::Location::file` return type)
 - rust-lang/rust#137396 (Recover `param: Ty = EXPR`)
 - rust-lang/rust#137457 (Fix host code appearing in Wasm binaries)
 - rust-lang/rust#142185 (Convert moves of references to copies in ReferencePropagation)
 - rust-lang/rust#144648 (Implementation: `#[feature(nonpoison_rwlock)]`)
 - rust-lang/rust#144897 (print raw lifetime idents with r#)
 - rust-lang/rust#145218 ([Debuginfo] improve enum value formatting in LLDB for better readability)
 - rust-lang/rust#145380 (Add codegen-llvm regression tests)
 - rust-lang/rust#145573 (Add an experimental unsafe(force_target_feature) attribute.)
 - rust-lang/rust#145597 (resolve: Remove `ScopeSet::Late`)
 - rust-lang/rust#145633 (Fix some typos in LocalKey documentation)
 - rust-lang/rust#145641 (On E0277, point at type that doesn't implement bound)
 - rust-lang/rust#145669 (rustdoc-search: GUI tests check for `//` in URL)
 - rust-lang/rust#145695 (Introduce ProjectionElem::try_map.)
 - rust-lang/rust#145710 (Fix the ABI parameter inconsistency issue in debug.rs for LoongArch64)
 - rust-lang/rust#145726 (Experiment: Reborrow trait)
 - rust-lang/rust#145731 (Make raw pointers work in type-based search)
 - rust-lang/rust#145736 (triagebot: Update style team reviewers)
 - rust-lang/rust#145738 (Uplift rustc_mir_transform::coverage::counters::union_find to rustc_data_structures.)
 - rust-lang/rust#145742 (rustdoc js: Even more typechecking improvments )
 - rust-lang/rust#145743 (doc: fix some typos in comment)
 - rust-lang/rust#145745 (tests: Ignore basic-stepping.rs on LoongArch)
 - rust-lang/rust#145747 (Refactor lint buffering to avoid requiring a giant enum)
 - rust-lang/rust#145751 (fix(lexer): Allow '-' in the frontmatter infostring continue set)
 - rust-lang/rust#145761 (Add aarch64_be-unknown-hermit target)
 - rust-lang/rust#145762 (convert strings to symbols in attr diagnostics)
 - rust-lang/rust#145763 (Ship LLVM tools for the correct target when cross-compiling)
 - rust-lang/rust#145765 (Revert suggestions for missing methods in tuples)

r? `@ghost`
`@rustbot` modify labels: rollup
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Zalathar commented Aug 24, 2025

This PR appears to have caused a perf regression in some doc benchmarks: #145773 (comment)

(Maybe that's just a natural consequence of doing more indexing in a stress-test full of *mut pointers, though?)

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previously raw pointers were being unwrapped at search index generation time, now we need to allocate a generics array for the inner type.

unfortunately we can't use SmallVec here as that would create a recursive type.

github-actions bot pushed a commit to rust-lang/rustc-dev-guide that referenced this pull request Aug 25, 2025
Rollup of 28 pull requests

Successful merges:

 - rust-lang/rust#132087 (Fix overly restrictive lifetime in `core::panic::Location::file` return type)
 - rust-lang/rust#137396 (Recover `param: Ty = EXPR`)
 - rust-lang/rust#137457 (Fix host code appearing in Wasm binaries)
 - rust-lang/rust#142185 (Convert moves of references to copies in ReferencePropagation)
 - rust-lang/rust#144648 (Implementation: `#[feature(nonpoison_rwlock)]`)
 - rust-lang/rust#144897 (print raw lifetime idents with r#)
 - rust-lang/rust#145218 ([Debuginfo] improve enum value formatting in LLDB for better readability)
 - rust-lang/rust#145380 (Add codegen-llvm regression tests)
 - rust-lang/rust#145573 (Add an experimental unsafe(force_target_feature) attribute.)
 - rust-lang/rust#145597 (resolve: Remove `ScopeSet::Late`)
 - rust-lang/rust#145633 (Fix some typos in LocalKey documentation)
 - rust-lang/rust#145641 (On E0277, point at type that doesn't implement bound)
 - rust-lang/rust#145669 (rustdoc-search: GUI tests check for `//` in URL)
 - rust-lang/rust#145695 (Introduce ProjectionElem::try_map.)
 - rust-lang/rust#145710 (Fix the ABI parameter inconsistency issue in debug.rs for LoongArch64)
 - rust-lang/rust#145726 (Experiment: Reborrow trait)
 - rust-lang/rust#145731 (Make raw pointers work in type-based search)
 - rust-lang/rust#145736 (triagebot: Update style team reviewers)
 - rust-lang/rust#145738 (Uplift rustc_mir_transform::coverage::counters::union_find to rustc_data_structures.)
 - rust-lang/rust#145742 (rustdoc js: Even more typechecking improvments )
 - rust-lang/rust#145743 (doc: fix some typos in comment)
 - rust-lang/rust#145745 (tests: Ignore basic-stepping.rs on LoongArch)
 - rust-lang/rust#145747 (Refactor lint buffering to avoid requiring a giant enum)
 - rust-lang/rust#145751 (fix(lexer): Allow '-' in the frontmatter infostring continue set)
 - rust-lang/rust#145761 (Add aarch64_be-unknown-hermit target)
 - rust-lang/rust#145762 (convert strings to symbols in attr diagnostics)
 - rust-lang/rust#145763 (Ship LLVM tools for the correct target when cross-compiling)
 - rust-lang/rust#145765 (Revert suggestions for missing methods in tuples)

r? `@ghost`
`@rustbot` modify labels: rollup
tmeijn pushed a commit to tmeijn/dotfiles that referenced this pull request Nov 4, 2025
This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [rust](https://github.com/rust-lang/rust) | minor | `1.90.0` -> `1.91.0` |

MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot).

**Proposed changes to behavior should be submitted there as MRs.**

---

### Release Notes

<details>
<summary>rust-lang/rust (rust)</summary>

### [`v1.91.0`](https://github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1910-2025-10-30)

[Compare Source](rust-lang/rust@1.90.0...1.91.0)

\==========================

<a id="1.91.0-Language"></a>

## Language

- [Lower pattern bindings in the order they're written and base drop order on primary bindings' order](rust-lang/rust#143764)
- [Stabilize declaration of C-style variadic functions for `sysv64`, `win64`, `efiapi`, and `aapcs` ABIs](rust-lang/rust#144066).
  This brings these ABIs in line with the C ABI: variadic functions can be declared in extern blocks but not defined.
- [Add `dangling_pointers_from_locals` lint to warn against dangling pointers from local variables](rust-lang/rust#144322)
- [Upgrade `semicolon_in_expressions_from_macros` from warn to deny](rust-lang/rust#144369)
- [Stabilize LoongArch32 inline assembly](rust-lang/rust#144402)
- [Add warn-by-default `integer_to_ptr_transmutes` lint against integer-to-pointer transmutes](rust-lang/rust#144531)
- [Stabilize `sse4a` and `tbm` target features](rust-lang/rust#144542)
- [Add `target_env = "macabi"` and `target_env = "sim"` cfgs](rust-lang/rust#139451) as replacements for the `target_abi` cfgs with the same values.

<a id="1.91.0-Compiler"></a>

## Compiler

- [Don't warn on never-to-any `as` casts as unreachable](rust-lang/rust#144804)

<a id="1.91.0-Platform-Support"></a>

## Platform Support

- [Promote `aarch64-pc-windows-gnullvm` and `x86_64-pc-windows-gnullvm` to Tier 2 with host tools.](rust-lang/rust#143031)
  Note: llvm-tools and MSI installers are missing but will be added in future releases.
- [Promote `aarch64-pc-windows-msvc` to Tier 1](rust-lang/rust#145682)

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

[platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html

<a id="1.91.0-Libraries"></a>

## Libraries

- [Print thread ID in panic message](rust-lang/rust#115746)
- [Fix overly restrictive lifetime in `core::panic::Location::file` return type](rust-lang/rust#132087)
- [Guarantee parameter order for `_by()` variants of `min` / `max`/ `minmax` in `std::cmp`](rust-lang/rust#139357)
- [Document assumptions about `Clone` and `Eq` traits](rust-lang/rust#144330)
- [`std::thread`: Return error if setting thread stack size fails](rust-lang/rust#144210)
  This used to panic within the standard library.

<a id="1.91.0-Stabilized-APIs"></a>

## Stabilized APIs

- [`Path::file_prefix`](https://doc.rust-lang.org/stable/std/path/struct.Path.html#method.file_prefix)
- [`AtomicPtr::fetch_ptr_add`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_ptr_add)
- [`AtomicPtr::fetch_ptr_sub`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_ptr_sub)
- [`AtomicPtr::fetch_byte_add`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_byte_add)
- [`AtomicPtr::fetch_byte_sub`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_byte_sub)
- [`AtomicPtr::fetch_or`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_or)
- [`AtomicPtr::fetch_and`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_and)
- [`AtomicPtr::fetch_xor`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_xor)
- [`{integer}::strict_add`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_add)
- [`{integer}::strict_sub`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_sub)
- [`{integer}::strict_mul`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_mul)
- [`{integer}::strict_div`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_div)
- [`{integer}::strict_div_euclid`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_div_euclid)
- [`{integer}::strict_rem`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_rem)
- [`{integer}::strict_rem_euclid`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_rem_euclid)
- [`{integer}::strict_neg`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_neg)
- [`{integer}::strict_shl`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_shl)
- [`{integer}::strict_shr`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_shr)
- [`{integer}::strict_pow`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_pow)
- [`i{N}::strict_add_unsigned`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_add_unsigned)
- [`i{N}::strict_sub_unsigned`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_sub_unsigned)
- [`i{N}::strict_abs`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_abs)
- [`u{N}::strict_add_signed`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_add_signed)
- [`u{N}::strict_sub_signed`](https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_sub_signed)
- [`PanicHookInfo::payload_as_str`](https://doc.rust-lang.org/stable/std/panic/struct.PanicHookInfo.html#method.payload_as_str)
- [`core::iter::chain`](https://doc.rust-lang.org/stable/core/iter/fn.chain.html)
- [`u{N}::checked_signed_diff`](https://doc.rust-lang.org/stable/std/primitive.u16.html#method.checked_signed_diff)
- [`core::array::repeat`](https://doc.rust-lang.org/stable/core/array/fn.repeat.html)
- [`PathBuf::add_extension`](https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#method.add_extension)
- [`PathBuf::with_added_extension`](https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#method.with_added_extension)
- [`Duration::from_mins`](https://doc.rust-lang.org/stable/std/time/struct.Duration.html#method.from_mins)
- [`Duration::from_hours`](https://doc.rust-lang.org/stable/std/time/struct.Duration.html#method.from_hours)
- [`impl PartialEq<str> for PathBuf`](https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#impl-PartialEq%3Cstr%3E-for-PathBuf)
- [`impl PartialEq<String> for PathBuf`](https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#impl-PartialEq%3CString%3E-for-PathBuf)
- [`impl PartialEq<str> for Path`](https://doc.rust-lang.org/stable/std/path/struct.Path.html#impl-PartialEq%3Cstr%3E-for-Path)
- [`impl PartialEq<String> for Path`](https://doc.rust-lang.org/stable/std/path/struct.Path.html#impl-PartialEq%3CString%3E-for-Path)
- [`impl PartialEq<PathBuf> for String`](https://doc.rust-lang.org/stable/std/string/struct.String.html#impl-PartialEq%3CPathBuf%3E-for-String)
- [`impl PartialEq<Path> for String`](https://doc.rust-lang.org/stable/std/string/struct.String.html#impl-PartialEq%3CPath%3E-for-String)
- [`impl PartialEq<PathBuf> for str`](https://doc.rust-lang.org/stable/std/primitive.str.html#impl-PartialEq%3CPathBuf%3E-for-str)
- [`impl PartialEq<Path> for str`](https://doc.rust-lang.org/stable/std/primitive.str.html#impl-PartialEq%3CPath%3E-for-str)
- [`Ipv4Addr::from_octets`](https://doc.rust-lang.org/stable/std/net/struct.Ipv4Addr.html#method.from_octets)
- [`Ipv6Addr::from_octets`](https://doc.rust-lang.org/stable/std/net/struct.Ipv6Addr.html#method.from_octets)
- [`Ipv6Addr::from_segments`](https://doc.rust-lang.org/stable/std/net/struct.Ipv6Addr.html#method.from_segments)
- [`impl<T> Default for Pin<Box<T>> where Box<T>: Default, T: ?Sized`](https://doc.rust-lang.org/stable/std/default/trait.Default.html#impl-Default-for-Pin%3CBox%3CT%3E%3E)
- [`impl<T> Default for Pin<Rc<T>> where Rc<T>: Default, T: ?Sized`](https://doc.rust-lang.org/stable/std/default/trait.Default.html#impl-Default-for-Pin%3CRc%3CT%3E%3E)
- [`impl<T> Default for Pin<Arc<T>> where Arc<T>: Default, T: ?Sized`](https://doc.rust-lang.org/stable/std/default/trait.Default.html#impl-Default-for-Pin%3CArc%3CT%3E%3E)
- [`Cell::as_array_of_cells`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#method.as_array_of_cells)
- [`u{N}::carrying_add`](https://doc.rust-lang.org/stable/std/primitive.u64.html#method.carrying_add)
- [`u{N}::borrowing_sub`](https://doc.rust-lang.org/stable/std/primitive.u64.html#method.borrowing_sub)
- [`u{N}::carrying_mul`](https://doc.rust-lang.org/stable/std/primitive.u64.html#method.carrying_mul)
- [`u{N}::carrying_mul_add`](https://doc.rust-lang.org/stable/std/primitive.u64.html#method.carrying_mul_add)
- [`BTreeMap::extract_if`](https://doc.rust-lang.org/stable/std/collections/struct.BTreeMap.html#method.extract_if)
- [`BTreeSet::extract_if`](https://doc.rust-lang.org/stable/std/collections/struct.BTreeSet.html#method.extract_if)
- [`impl Debug for windows::ffi::EncodeWide<'_>`](https://doc.rust-lang.org/stable/std/os/windows/ffi/struct.EncodeWide.html#impl-Debug-for-EncodeWide%3C'_%3E)
- [`str::ceil_char_boundary`](https://doc.rust-lang.org/stable/std/primitive.str.html#method.ceil_char_boundary)
- [`str::floor_char_boundary`](https://doc.rust-lang.org/stable/std/primitive.str.html#method.floor_char_boundary)
- [`impl Sum for Saturating<u{N}>`](https://doc.rust-lang.org/stable/std/num/struct.Saturating.html#impl-Sum-for-Saturating%3Cu32%3E)
- [`impl Sum<&Self> for Saturating<u{N}>`](https://doc.rust-lang.org/stable/std/num/struct.Saturating.html#impl-Sum%3C%26Saturating%3Cu32%3E%3E-for-Saturating%3Cu32%3E)
- [`impl Product for Saturating<u{N}>`](https://doc.rust-lang.org/stable/std/num/struct.Saturating.html#impl-Product-for-Saturating%3Cu32%3E)
- [`impl Product<&Self> for Saturating<u{N}>`](https://doc.rust-lang.org/stable/std/num/struct.Saturating.html#impl-Product%3C%26Saturating%3Cu32%3E%3E-for-Saturating%3Cu32%3E)

These previously stable APIs are now stable in const contexts:

- [`<[T; N]>::each_ref`](https://doc.rust-lang.org/stable/std/primitive.array.html#method.each_ref)
- [`<[T; N]>::each_mut`](https://doc.rust-lang.org/stable/std/primitive.array.html#method.each_mut)
- [`OsString::new`](https://doc.rust-lang.org/stable/std/ffi/struct.OsString.html#method.new)
- [`PathBuf::new`](https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#method.new)
- [`TypeId::of`](https://doc.rust-lang.org/stable/std/any/struct.TypeId.html#method.of)
- [`ptr::with_exposed_provenance`](https://doc.rust-lang.org/stable/std/ptr/fn.with_exposed_provenance.html)
- [`ptr::with_exposed_provenance_mut`](https://doc.rust-lang.org/stable/std/ptr/fn.with_exposed_provenance_mut.html)

<a id="1.91.0-Cargo"></a>

## Cargo

- 🎉 Stabilize `build.build-dir`.
  This config sets the directory where intermediate build artifacts are stored.
  These artifacts are produced by Cargo and rustc during the build process.
  End users usually won't need to interact with them, and the layout inside
  `build-dir` is an implementation detail that may change without notice.
  ([config doc](https://doc.rust-lang.org/stable/cargo/reference/config.html#buildbuild-dir))
  ([build cache doc](https://doc.rust-lang.org/stable/cargo/reference/build-cache.html))
  [#&#8203;15833](rust-lang/cargo#15833)
  [#&#8203;15840](rust-lang/cargo#15840)
- The `--target` flag and the `build.target` configuration can now take literal
  `"host-tuple"` string, which will internally be substituted by the host
  machine's target triple.
  [#&#8203;15838](rust-lang/cargo#15838)
  [#&#8203;16003](rust-lang/cargo#16003)
  [#&#8203;16032](rust-lang/cargo#16032)

<a id="1.91.0-Rustdoc"></a>

## Rustdoc

- [In search results, rank doc aliases lower than non-alias items with the same name](rust-lang/rust#145100)
- [Raw pointers now work in type-based search like references](rust-lang/rust#145731). This means you can now search for things like `*const u8 ->`, and additionally functions that take or return raw pointers will now display their signature properly in search results.

<a id="1.91.0-Compatibility-Notes"></a>

## Compatibility Notes

- [Always require coroutine captures to be drop-live](rust-lang/rust#144156)
- [Apple: Always pass SDK root when linking with `cc`, and pass it via `SDKROOT` env var](rust-lang/rust#131477). This should fix linking issues with `rustc` running inside Xcode. Libraries in `/usr/local/lib` may no longer be linked automatically, if you develop or use a crate that relies on this, you should explicitly set `cargo::rustc-link-search=/usr/local/lib` in a `build.rs` script.
- [Relaxed bounds in associated type bound position like in `TraitRef<AssocTy: ?Sized>` are now correctly forbidden](rust-lang/rust#135331)
- [Add unstable `#[sanitize(xyz = "on|off")]` built-in attribute that shadows procedural macros with the same name](rust-lang/rust#142681)
- [Fix the drop checker being more permissive for bindings declared with let-else](rust-lang/rust#143028)
- [Be more strict when parsing attributes, erroring on many invalid attributes](rust-lang/rust#144689)
  - [Error on invalid `#[should_panic]` attributes](rust-lang/rust#143808)
  - [Error on invalid `#[link]` attributes](rust-lang/rust#143193)
- [Mark all deprecation lints in name resolution as deny-by-default and also report in dependencies](rust-lang/rust#143929)
- The lint `semicolon_in_expressions_from_macros`, for `macro_rules!` macros in expression position that expand to end in a semicolon (`;`), is now deny-by-default. It was already warn-by-default, and a future compatibility warning (FCW) that warned even in dependencies. This lint will become a hard error in the future.
- [Trait impl modifiers (e.g., `unsafe`, `!`, `default`) in inherent impls are no longer syntactically valid](rust-lang/rust#144386)
- [Start reporting future breakage for `ill_formed_attribute_input` in dependencies](rust-lang/rust#144544)
- [Restrict the scope of temporaries created by the macros `pin!`, `format_args!`, `write!`, and `writeln!` in `if let` scrutinees in Rust Edition 2024.](rust-lang/rust#145342) This applies [Rust Edition 2024's `if let` temporary scope rules](https://doc.rust-lang.org/edition-guide/rust-2024/temporary-if-let-scope.html) to these temporaries, which previously could live past the `if` expression regardless of Edition.
- [Invalid numeric literal suffixes in tuple indexing, tuple struct indexing, and struct field name positions are now correctly rejected](rust-lang/rust#145463)
- [Closures marked with the keyword `static` are now syntactically invalid](rust-lang/rust#145604)
- [Shebangs inside `--cfg` and `--check-cfg` arguments are no longer allowed](rust-lang/rust#146211)
- [Add future incompatibility lint for temporary lifetime shortening in Rust 1.92](rust-lang/rust#147056)

Cargo compatibility notes:

- `cargo publish` no longer keeps `.crate` tarballs as final build artifacts
  when `build.build-dir` is set. These tarballs were previously included due to
  an oversight and are now treated as intermediate artifacts.
  To get `.crate` tarballs as final artifacts, use `cargo package`.
  In a future version, this change will apply regardless of `build.build-dir`.
  [#&#8203;15910](rust-lang/cargo#15910)
- Adjust Cargo messages to match rustc diagnostic style.
  This changes some of the terminal colors used by Cargo messages.
  [#&#8203;15928](rust-lang/cargo#15928)
- Tools and projects relying on the
  [internal details of Cargo's `build-dir`](https://doc.rust-lang.org/cargo/reference/build-cache.html)
  may not work for users changing their `build-dir` layout.
  For those doing so, we'd recommend proactively testing these cases
  particularly as we are considering changing the default location of the `build-dir` in the future
  ([cargo#16147](rust-lang/cargo#16147)).
  If you can't migrate off of Cargo's internal details,
  we'd like to learn more about your use case as we prepare to change the layout of the `build-dir`
  ([cargo#15010](rust-lang/cargo#15010)).

<a id="1.91.0-Internal-Changes"></a>

## Internal Changes

These changes do not affect any public interfaces of Rust, but they represent
significant improvements to the performance or internals of rustc and related
tools.

- [Update to LLVM 21](rust-lang/rust#143684)

</details>

---

### Configuration

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🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this MR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this MR, check this box

---

This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS4xNjkuMSIsInVwZGF0ZWRJblZlciI6IjQxLjE2OS4xIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJSZW5vdmF0ZSBCb3QiXX0=-->
wip-sync pushed a commit to NetBSD/pkgsrc-wip that referenced this pull request Nov 5, 2025
Pkgsrc changes:
 * Adjust patches to adapt to upstream changes and new versions.
 * assosicated checksums
 * Add a workaround for LLVM mis-using -isystem.  Reported upstream
   at llvm/llvm-project#166420

Noteable failures at the time of commit:
 * The cross-build for armv6 fails, reported upstream at
   rust-lang/rust#148464
 * The cross-build for powerpc fails, reported upstream at
   rust-lang/rust#148497
   This is R_PPC_PLTREL24 which now has insufficient range.
   Asked for recpie for directing the rust code generator to cope.

Upstream changes relative to 1.90.0:

Version 1.91.0 (2025-10-30)
==========================

Language
--------

- [Lower pattern bindings in the order they're written and base
  drop order on primary bindings' order]
  (rust-lang/rust#143764)
- [Stabilize declaration of C-style variadic functions for `sysv64`,
  `win64`, `efiapi`, and `aapcs` ABIs]
  (rust-lang/rust#144066).  This brings
  these ABIs in line with the C ABI: variadic functions can be
  declared in extern blocks but not defined.
- [Add `dangling_pointers_from_locals` lint to warn against dangling
  pointers from local variables]
  (rust-lang/rust#144322)
- [Upgrade `semicolon_in_expressions_from_macros` from warn to deny]
  (rust-lang/rust#144369)
- [Stabilize LoongArch32 inline assembly]
  (rust-lang/rust#144402)
- [Add warn-by-default `integer_to_ptr_transmutes` lint against
  integer-to-pointer transmutes]
  (rust-lang/rust#144531)
- [Stabilize `sse4a` and `tbm` target features]
  (rust-lang/rust#144542)
- [Add `target_env = "macabi"` and `target_env = "sim"` cfgs]
  (rust-lang/rust#139451) as replacements
  for the `target_abi` cfgs with the same values.

Compiler
--------

- [Don't warn on never-to-any `as` casts as unreachable]
  (rust-lang/rust#144804)

Platform Support
----------------

- [Promote `aarch64-pc-windows-gnullvm` and `x86_64-pc-windows-gnullvm`
  to Tier 2 with host tools.]
  (rust-lang/rust#143031) Note: llvm-tools
  and MSI installers are missing but will be added in future
  releases.
- [Promote `aarch64-pc-windows-msvc` to Tier 1]
  (rust-lang/rust#145682)

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

[platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html

Libraries
---------

- [Print thread ID in panic message]
  (rust-lang/rust#115746)
- [Fix overly restrictive lifetime in `core::panic::Location::file` return type]
  (rust-lang/rust#132087)
- [Guarantee parameter order for `_by()` variants of `min` / `max`/
  `minmax` in `std::cmp`] (rust-lang/rust#139357)
- [Document assumptions about `Clone` and `Eq` traits]
  (rust-lang/rust#144330)
- [`std::thread`: Return error if setting thread stack size fails]
  (rust-lang/rust#144210)
  This used to panic within the standard library.

Stabilized APIs
---------------

- [`Path::file_prefix`]
  (https://doc.rust-lang.org/stable/std/path/struct.Path.html#method.file_prefix)
- [`AtomicPtr::fetch_ptr_add`]
  (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_ptr_add)
- [`AtomicPtr::fetch_ptr_sub`]
  (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_ptr_sub)
- [`AtomicPtr::fetch_byte_add`]
  (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_byte_add)
- [`AtomicPtr::fetch_byte_sub`]
  (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_byte_sub)
- [`AtomicPtr::fetch_or`]
  (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_or)
- [`AtomicPtr::fetch_and`]
  (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_and)
- [`AtomicPtr::fetch_xor`]
  (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.fetch_xor)
- [`{integer}::strict_add`]
  (https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_add)
- [`{integer}::strict_sub`]
  (https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_sub)
- [`{integer}::strict_mul`]
  (https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_mul)
- [`{integer}::strict_div`]
  (https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_div)
- [`{integer}::strict_div_euclid`]
  (https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_div_euclid)
- [`{integer}::strict_rem`]
  (https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_rem)
- [`{integer}::strict_rem_euclid`]
  (https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_rem_euclid)
- [`{integer}::strict_neg`]
  (https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_neg)
- [`{integer}::strict_shl`]
  (https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_shl)
- [`{integer}::strict_shr`]
  (https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_shr)
- [`{integer}::strict_pow`]
  (https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_pow)
- [`i{N}::strict_add_unsigned`]
  (https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_add_unsigned)
- [`i{N}::strict_sub_unsigned`]
  (https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_sub_unsigned)
- [`i{N}::strict_abs`]
  (https://doc.rust-lang.org/stable/std/primitive.i32.html#method.strict_abs)
- [`u{N}::strict_add_signed`]
  (https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_add_signed)
- [`u{N}::strict_sub_signed`]
  (https://doc.rust-lang.org/stable/std/primitive.u32.html#method.strict_sub_signed)
- [`PanicHookInfo::payload_as_str`]
  (https://doc.rust-lang.org/stable/std/panic/struct.PanicHookInfo.html#method.payload_as_str)
- [`core::iter::chain`]
  (https://doc.rust-lang.org/stable/core/iter/fn.chain.html)
- [`u{N}::checked_signed_diff`]
  (https://doc.rust-lang.org/stable/std/primitive.u16.html#method.checked_signed_diff)
- [`core::array::repeat`]
  (https://doc.rust-lang.org/stable/core/array/fn.repeat.html)
- [`PathBuf::add_extension`]
  (https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#method.add_extension)
- [`PathBuf::with_added_extension`]
  (https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#method.with_added_extension)
- [`Duration::from_mins`]
  (https://doc.rust-lang.org/stable/std/time/struct.Duration.html#method.from_mins)
- [`Duration::from_hours`]
  (https://doc.rust-lang.org/stable/std/time/struct.Duration.html#method.from_hours)
- [`impl PartialEq<str> for PathBuf`]
  (https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#impl-PartialEq%3Cstr%3E-for-PathBuf)
- [`impl PartialEq<String> for PathBuf`]
  (https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#impl-PartialEq%3CString%3E-for-PathBuf)
- [`impl PartialEq<str> for Path`]
  (https://doc.rust-lang.org/stable/std/path/struct.Path.html#impl-PartialEq%3Cstr%3E-for-Path)
- [`impl PartialEq<String> for Path`]
  (https://doc.rust-lang.org/stable/std/path/struct.Path.html#impl-PartialEq%3CString%3E-for-Path)
- [`impl PartialEq<PathBuf> for String`]
  (https://doc.rust-lang.org/stable/std/string/struct.String.html#impl-PartialEq%3CPathBuf%3E-for-String)
- [`impl PartialEq<Path> for String`]
  (https://doc.rust-lang.org/stable/std/string/struct.String.html#impl-PartialEq%3CPath%3E-for-String)
- [`impl PartialEq<PathBuf> for str`]
  (https://doc.rust-lang.org/stable/std/primitive.str.html#impl-PartialEq%3CPathBuf%3E-for-str)
- [`impl PartialEq<Path> for str`]
  (https://doc.rust-lang.org/stable/std/primitive.str.html#impl-PartialEq%3CPath%3E-for-str)
- [`Ipv4Addr::from_octets`]
  (https://doc.rust-lang.org/stable/std/net/struct.Ipv4Addr.html#method.from_octets)
- [`Ipv6Addr::from_octets`]
  (https://doc.rust-lang.org/stable/std/net/struct.Ipv6Addr.html#method.from_octets)
- [`Ipv6Addr::from_segments`]
  (https://doc.rust-lang.org/stable/std/net/struct.Ipv6Addr.html#method.from_segments)
- [`impl<T> Default for Pin<Box<T>> where Box<T>: Default, T: ?Sized`]
  (https://doc.rust-lang.org/stable/std/default/trait.Default.html#impl-Default-for-Pin%3CBox%3CT%3E%3E)
- [`impl<T> Default for Pin<Rc<T>> where Rc<T>: Default, T: ?Sized`]
  (https://doc.rust-lang.org/stable/std/default/trait.Default.html#impl-Default-for-Pin%3CRc%3CT%3E%3E)
- [`impl<T> Default for Pin<Arc<T>> where Arc<T>: Default, T: ?Sized`]
  (https://doc.rust-lang.org/stable/std/default/trait.Default.html#impl-Default-for-Pin%3CArc%3CT%3E%3E)
- [`Cell::as_array_of_cells`]
  (https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#method.as_array_of_cells)
- [`u{N}::carrying_add`]
  (https://doc.rust-lang.org/stable/std/primitive.u64.html#method.carrying_add)
- [`u{N}::borrowing_sub`]
  (https://doc.rust-lang.org/stable/std/primitive.u64.html#method.borrowing_sub)
- [`u{N}::carrying_mul`]
  (https://doc.rust-lang.org/stable/std/primitive.u64.html#method.carrying_mul)
- [`u{N}::carrying_mul_add`]
  (https://doc.rust-lang.org/stable/std/primitive.u64.html#method.carrying_mul_add)
- [`BTreeMap::extract_if`]
  (https://doc.rust-lang.org/stable/std/collections/struct.BTreeMap.html#method.extract_if)
- [`BTreeSet::extract_if`]
  (https://doc.rust-lang.org/stable/std/collections/struct.BTreeSet.html#method.extract_if)
- [`impl Debug for windows::ffi::EncodeWide<'_>`]
  (https://doc.rust-lang.org/stable/std/os/windows/ffi/struct.EncodeWide.html#impl-Debug-for-EncodeWide%3C'_%3E)
- [`str::ceil_char_boundary`]
  (https://doc.rust-lang.org/stable/std/primitive.str.html#method.ceil_char_boundary)
- [`str::floor_char_boundary`]
  (https://doc.rust-lang.org/stable/std/primitive.str.html#method.floor_char_boundary)
- [`impl Sum for Saturating<u{N}>`]
  (https://doc.rust-lang.org/stable/std/num/struct.Saturating.html#impl-Sum-for-Saturating%3Cu32%3E)
- [`impl Sum<&Self> for Saturating<u{N}>`]
  (https://doc.rust-lang.org/stable/std/num/struct.Saturating.html#impl-Sum%3C%26Saturating%3Cu32%3E%3E-for-Saturating%3Cu32%3E)
- [`impl Product for Saturating<u{N}>`]
  (https://doc.rust-lang.org/stable/std/num/struct.Saturating.html#impl-Product-for-Saturating%3Cu32%3E)
- [`impl Product<&Self> for Saturating<u{N}>`]
  (https://doc.rust-lang.org/stable/std/num/struct.Saturating.html#impl-Product%3C%26Saturating%3Cu32%3E%3E-for-Saturating%3Cu32%3E)

These previously stable APIs are now stable in const contexts:

- [`<[T; N]>::each_ref`]
  (https://doc.rust-lang.org/stable/std/primitive.array.html#method.each_ref)
- [`<[T; N]>::each_mut`]
  (https://doc.rust-lang.org/stable/std/primitive.array.html#method.each_mut)
- [`OsString::new`]
  (https://doc.rust-lang.org/stable/std/ffi/struct.OsString.html#method.new)
- [`PathBuf::new`]
  (https://doc.rust-lang.org/stable/std/path/struct.PathBuf.html#method.new)
- [`TypeId::of`]
  (https://doc.rust-lang.org/stable/std/any/struct.TypeId.html#method.of)
- [`ptr::with_exposed_provenance`]
  (https://doc.rust-lang.org/stable/std/ptr/fn.with_exposed_provenance.html)
- [`ptr::with_exposed_provenance_mut`]
  (https://doc.rust-lang.org/stable/std/ptr/fn.with_exposed_provenance_mut.html)

Cargo
-----

- 🎉 Stabilize `build.build-dir`.
  This config sets the directory where intermediate build artifacts are stored.
  These artifacts are produced by Cargo and rustc during the build process.
  End users usually won't need to interact with them, and the layout inside
  `build-dir` is an implementation detail that may change without notice.
  ([config doc]
  (https://doc.rust-lang.org/stable/cargo/reference/config.html#buildbuild-dir))
  ([build cache doc]
  (https://doc.rust-lang.org/stable/cargo/reference/build-cache.html))
  [#15833](rust-lang/cargo#15833)
  [#15840](rust-lang/cargo#15840)
- The `--target` flag and the `build.target` configuration can now take literal
  `"host-tuple"` string, which will internally be substituted by the host
  machine's target triple.
  [#15838](rust-lang/cargo#15838)
  [#16003](rust-lang/cargo#16003)
  [#16032](rust-lang/cargo#16032)

Rustdoc
-----

- [In search results, rank doc aliases lower than non-alias items
  with the same name](rust-lang/rust#145100)
- [Raw pointers now work in type-based search like references]
  (rust-lang/rust#145731). This means you
  can now search for things like `*const u8 ->`, and additionally
  functions that take or return raw pointers will now display their
  signature properly in search results.

Compatibility Notes
-------------------

- [Always require coroutine captures to be drop-live]
  (rust-lang/rust#144156)
- [Apple: Always pass SDK root when linking with `cc`, and pass it
  via `SDKROOT` env var]
  (rust-lang/rust#131477). This should fix
  linking issues with `rustc` running inside Xcode. Libraries in
  `/usr/local/lib` may no longer be linked automatically, if you
  develop or use a crate that relies on this, you should explicitly
  set `cargo::rustc-link-search=/usr/local/lib` in a `build.rs`
  script.
- [Relaxed bounds in associated type bound position like in
  `TraitRef<AssocTy: ?Sized>` are now correctly forbidden]
  (rust-lang/rust#135331)
- [Add unstable `#[sanitize(xyz = "on|off")]` built-in attribute
  that shadows procedural macros with the same name]
  (rust-lang/rust#142681)
- [Fix the drop checker being more permissive for bindings declared
  with let-else] (rust-lang/rust#143028)
- [Be more strict when parsing attributes, erroring on many invalid attributes]
  (rust-lang/rust#144689)
    - [Error on invalid `#[should_panic]` attributes]
      (rust-lang/rust#143808)
    - [Error on invalid `#[link]` attributes]
      (rust-lang/rust#143193)
- [Mark all deprecation lints in name resolution as deny-by-default
  and also report in dependencies]
  (rust-lang/rust#143929)
- The lint `semicolon_in_expressions_from_macros`, for `macro_rules!`
  macros in expression position that expand to end in a semicolon
  (`;`), is now deny-by-default. It was already warn-by-default,
  and a future compatibility warning (FCW) that warned even in
  dependencies.  This lint will become a hard error in the future.
- [Trait impl modifiers (e.g., `unsafe`, `!`, `default`) in inherent
  impls are no longer syntactically valid]
  (rust-lang/rust#144386)
- [Start reporting future breakage for `ill_formed_attribute_input`
  in dependencies] (rust-lang/rust#144544)
- [Restrict the scope of temporaries created by the macros `pin!`,
  `format_args!`, `write!`, and `writeln!` in `if let` scrutinees in
  Rust Edition 2024.]
  (rust-lang/rust#145342) This applies
  [Rust Edition 2024's `if let` temporary scope rules]
  (https://doc.rust-lang.org/edition-guide/rust-2024/temporary-if-let-scope.html)
  to these temporaries, which previously could live past the `if`
  expression regardless of Edition.
- [Invalid numeric literal suffixes in tuple indexing, tuple struct
  indexing, and struct field name positions are now correctly rejected]
  (rust-lang/rust#145463)
- [Closures marked with the keyword `static` are now syntactically invalid]
  (rust-lang/rust#145604)
- [Shebangs inside `--cfg` and `--check-cfg` arguments are no longer allowed]
  (rust-lang/rust#146211)
- [Add future incompatibility lint for temporary lifetime shortening
  in Rust 1.92] (rust-lang/rust#147056)

Cargo compatibility notes:

- `cargo publish` no longer keeps `.crate` tarballs as final build artifacts
  when `build.build-dir` is set. These tarballs were previously included due to
  an oversight and are now treated as intermediate artifacts.
  To get `.crate` tarballs as final artifacts, use `cargo package`.
  In a future version, this change will apply regardless of `build.build-dir`.
  [#15910](rust-lang/cargo#15910)
- Adjust Cargo messages to match rustc diagnostic style.
  This changes some of the terminal colors used by Cargo messages.
  [#15928](rust-lang/cargo#15928)
- Tools and projects relying on the
  [internal details of Cargo's `build-dir`]
  (https://doc.rust-lang.org/cargo/reference/build-cache.html)
  may not work for users changing their `build-dir` layout.
  For those doing so, we'd recommend proactively testing these cases
  particularly as we are considering changing the default location
  of the `build-dir` in the future
  ([cargo#16147](rust-lang/cargo#16147)).
  If you can't migrate off of Cargo's internal details,
  we'd like to learn more about your use case as we prepare to
  change the layout of the `build-dir` ([cargo#15010]
  (rust-lang/cargo#15010)).

Internal Changes
----------------

These changes do not affect any public interfaces of Rust, but they
represent significant improvements to the performance or internals
of rustc and related tools.

- [Update to LLVM 21](rust-lang/rust#143684)
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