Implement the MCP 932: Promote riscv64a23-unknown-linux-gnu to Tier 2 #148435

ZhongyaoChen · 2025-11-03T11:47:00Z

Implement the MCP 932: Promote riscv64a23-unknown-linux-gnu to Tier 2 without host tools.

Changes:

Update target tier from 3 to 2 in target specification
Update platform documentation
Add CI/CD support for automatic building and distribution via rustup

… without host tools Changes: - Update target tier from 3 to 2 in target specification - Update platform documentation - Add CI/CD support for automatic building and distribution via rustup

rustbot · 2025-11-03T11:47:03Z

Some changes occurred in src/doc/rustc/src/platform-support

cc @Noratrieb

These commits modify compiler targets.
(See the Target Tier Policy.)

src/doc/rustc/src/platform-support/riscv64a23-unknown-linux-gnu.md

jieyouxu

Thanks

View changes since this review

jieyouxu · 2025-11-09T07:40:32Z

@bors r+

bors · 2025-11-09T07:40:35Z

📌 Commit 1af9b63 has been approved by jieyouxu

It is now in the queue for this repository.

jieyouxu · 2025-11-09T11:30:17Z

Actually, this can affect CI duration so
@bors rollup=never

bors · 2025-11-09T19:58:00Z

⌛ Testing commit 1af9b63 with merge 6647be9...

bors · 2025-11-09T23:14:27Z

☀️ Test successful - checks-actions
Approved by: jieyouxu
Pushing 6647be9 to master...

github-actions · 2025-11-09T23:17:37Z

What is this?

This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 86b95eb (parent) -> 6647be9 (this PR)

Test differences

Show 3 test diffs

3 doctest diffs were found. These are ignored, as they are noisy.

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
    test-dashboard 6647be93640686a2a443a49f15c3390b68c8b5dd --output-dir test-dashboard

And then open test-dashboard/index.html in your browser to see an overview of all executed tests.

Job duration changes

pr-check-1: 1361.8s -> 1704.2s (+25.1%)
x86_64-gnu-gcc: 2797.5s -> 3423.9s (+22.4%)
aarch64-apple: 8804.5s -> 10622.4s (+20.6%)
i686-gnu-2: 5426.7s -> 6309.2s (+16.3%)
dist-x86_64-apple: 7449.1s -> 8637.5s (+16.0%)
aarch64-gnu-llvm-20-2: 2141.9s -> 2469.6s (+15.3%)
x86_64-gnu-llvm-20: 2491.1s -> 2862.3s (+14.9%)
aarch64-gnu: 6353.0s -> 7252.5s (+14.2%)
aarch64-gnu-llvm-20-1: 3458.8s -> 3894.9s (+12.6%)
x86_64-gnu-llvm-21-1: 3273.3s -> 3664.4s (+11.9%)

How to interpret the job duration changes?

Job durations can vary a lot, based on the actual runner instance
that executed the job, system noise, invalidated caches, etc. The table above is provided
mostly for t-infra members, for simpler debugging of potential CI slow-downs.

rust-timer · 2025-11-10T00:34:24Z

Finished benchmarking commit (6647be9): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results (primary -1.4%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-1.4%	[-1.4%, -1.4%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-1.4%	[-1.4%, -1.4%]	1

Cycles

This benchmark run did not return any relevant results for this metric.

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 476.643s -> 475.519s (-0.24%)
Artifact size: 391.27 MiB -> 391.32 MiB (0.01%)

…ier2, r=jieyouxu Implement the MCP 932: Promote riscv64a23-unknown-linux-gnu to Tier 2 Implement the [MCP 932](rust-lang/compiler-team#932): Promote riscv64a23-unknown-linux-gnu to Tier 2 without host tools. Closes rust-lang#148353. Changes: - Update target tier from 3 to 2 in target specification - Update platform documentation - Add CI/CD support for automatic building and distribution via rustup r? jieyouxu cc `@davidtwco` `@Noratrieb`

…-tier2, r=Mark-Simulacrum Add riscv64a23-unknown-linux-gnu to build-manifest TARGETS This enables rustup distribution of the rust-std component for the riscv64a23-unknown-linux-gnu target (Previous PR rust-lang#148435 missed this step.)

Rollup merge of #148886 - ZhongyaoChen:promote-riscv64a23-to-tier2, r=Mark-Simulacrum Add riscv64a23-unknown-linux-gnu to build-manifest TARGETS This enables rustup distribution of the rust-std component for the riscv64a23-unknown-linux-gnu target (Previous PR #148435 missed this step.)

This MR contains the following updates: | Package | Update | Change | |---|---|---| | [rust](https://github.com/rust-lang/rust) | minor | `1.92.0` → `1.93.0` | 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> ### [`v1.93.0`](https://github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1930-2026-01-22) [Compare Source](rust-lang/rust@1.92.0...1.93.0) \========================== <a id="1.93.0-Language"></a> ## Language - [Stabilize several s390x `vector`-related target features and the `is_s390x_feature_detected!` macro](rust-lang/rust#145656) - [Stabilize declaration of C-style variadic functions for the `system` ABI](rust-lang/rust#145954) - [Emit error when using some keyword as a `cfg` predicate](rust-lang/rust#146978) - [Stabilize `asm_cfg`](rust-lang/rust#147736) - [During const-evaluation, support copying pointers byte-by-byte](rust-lang/rust#148259) - [LUB coercions now correctly handle function item types, and functions with differing safeties](rust-lang/rust#148602) - [Allow `const` items that contain mutable references to `static` (which is *very* unsafe, but not *always* UB)](rust-lang/rust#148746) - [Add warn-by-default `const_item_interior_mutations` lint to warn against calls which mutate interior mutable `const` items](rust-lang/rust#148407) - [Add warn-by-default `function_casts_as_integer` lint](rust-lang/rust#141470) <a id="1.93.0-Compiler"></a> ## Compiler - [Stabilize `-Cjump-tables=bool`](rust-lang/rust#145974). The flag was previously called `-Zno-jump-tables`. <a id="1.93.0-Platform-Support"></a> ## Platform Support - [Promote `riscv64a23-unknown-linux-gnu` to Tier 2 (without host tools)](rust-lang/rust#148435) 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="1.93.0-Libraries"></a> ## Libraries - [Stop internally using `specialization` on the `Copy` trait as it is unsound in the presence of lifetime dependent `Copy` implementations. This may result in some performance regressions as some standard library APIs may now call `Clone::clone` instead of performing bitwise copies](rust-lang/rust#135634) - [Allow the global allocator to use thread-local storage and `std::thread::current()`](rust-lang/rust#144465) - [Make `BTree::append` not update existing keys when appending an entry which already exists](rust-lang/rust#145628) - [Don't require `T: RefUnwindSafe` for `vec::IntoIter<T>: UnwindSafe`](rust-lang/rust#145665) <a id="1.93.0-Stabilized-APIs"></a> ## Stabilized APIs - [`<[MaybeUninit<T>]>::assume_init_drop`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.assume_init_drop) - [`<[MaybeUninit<T>]>::assume_init_ref`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.assume_init_ref) - [`<[MaybeUninit<T>]>::assume_init_mut`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.assume_init_mut) - [`<[MaybeUninit<T>]>::write_copy_of_slice`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.write_copy_of_slice) - [`<[MaybeUninit<T>]>::write_clone_of_slice`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.write_clone_of_slice) - [`String::into_raw_parts`](https://doc.rust-lang.org/stable/std/string/struct.String.html#method.into_raw_parts) - [`Vec::into_raw_parts`](https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#method.into_raw_parts) - [`<iN>::unchecked_neg`](https://doc.rust-lang.org/stable/std/primitive.isize.html#method.unchecked_neg) - [`<iN>::unchecked_shl`](https://doc.rust-lang.org/stable/std/primitive.isize.html#method.unchecked_shl) - [`<iN>::unchecked_shr`](https://doc.rust-lang.org/stable/std/primitive.isize.html#method.unchecked_shr) - [`<uN>::unchecked_shl`](https://doc.rust-lang.org/stable/std/primitive.usize.html#method.unchecked_shl) - [`<uN>::unchecked_shr`](https://doc.rust-lang.org/stable/std/primitive.usize.html#method.unchecked_shr) - [`<[T]>::as_array`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.as_array) - [`<[T]>::as_array_mut`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.as_mut_array) - [`<*const [T]>::as_array`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_array) - [`<*mut [T]>::as_array_mut`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_array) - [`VecDeque::pop_front_if`](https://doc.rust-lang.org/stable/std/collections/struct.VecDeque.html#method.pop_front_if) - [`VecDeque::pop_back_if`](https://doc.rust-lang.org/stable/std/collections/struct.VecDeque.html#method.pop_back_if) - [`Duration::from_nanos_u128`](https://doc.rust-lang.org/stable/std/time/struct.Duration.html#method.from_nanos_u128) - [`char::MAX_LEN_UTF8`](https://doc.rust-lang.org/stable/std/primitive.char.html#associatedconstant.MAX_LEN_UTF8) - [`char::MAX_LEN_UTF16`](https://doc.rust-lang.org/stable/std/primitive.char.html#associatedconstant.MAX_LEN_UTF16) - [`std::fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`std::fmt::FromFn`](https://doc.rust-lang.org/stable/std/fmt/struct.FromFn.html) <a id="1.93.0-Cargo"></a> ## Cargo - [Enable CARGO\_CFG\_DEBUG\_ASSERTIONS in build scripts based on profile](rust-lang/cargo#16160) - [In `cargo tree`, support long forms for `--format` variables](rust-lang/cargo#16204) - [Add `--workspace` to `cargo clean`](rust-lang/cargo#16263) <a id="1.93.0-Rustdoc"></a> ## Rustdoc - [Remove `#![doc(document_private_items)]`](rust-lang/rust#146495) - [Include attribute and derive macros in search filters for "macros"](rust-lang/rust#148176) - [Include extern crates in search filters for `import`](rust-lang/rust#148301) - [Validate usage of crate-level doc attributes](rust-lang/rust#149197). This means if any of `html_favicon_url`, `html_logo_url`, `html_playground_url`, `issue_tracker_base_url`, or `html_no_source` either has a missing value, an unexpected value, or a value of the wrong type, rustdoc will emit the deny-by-default lint `rustdoc::invalid_doc_attributes`. <a id="1.93.0-Compatibility-Notes"></a> ## Compatibility Notes - [Introduce `pin_v2` into the builtin attributes namespace](rust-lang/rust#139751) - [Update bundled musl to 1.2.5](rust-lang/rust#142682) - [On Emscripten, the unwinding ABI used when compiling with `panic=unwind` was changed from the JS exception handling ABI to the wasm exception handling ABI.](rust-lang/rust#147224) If linking C/C++ object files with Rust objects, `-fwasm-exceptions` must be passed to the linker now. On nightly Rust, it is possible to get the old behavior with `-Zwasm-emscripten-eh=false -Zbuild-std`, but it will be removed in a future release. - The `#[test]` attribute, used to define tests, was previously ignored in various places where it had no meaning (e.g on trait methods or types). Putting the `#[test]` attribute in these places is no longer ignored, and will now result in an error; this may also result in errors when generating rustdoc. [Error when `test` attribute is applied to structs](rust-lang/rust#147841) - Cargo now sets the `CARGO_CFG_DEBUG_ASSERTIONS` environment variable in more situations. This will cause crates depending on `static-init` versions 1.0.1 to 1.0.3 to fail compilation with "failed to resolve: use of unresolved module or unlinked crate `parking_lot`". See [the linked issue](rust-lang/rust#150646 (comment)) for details. - [User written types in the `offset_of!` macro are now checked to be well formed.](rust-lang/rust#150465) - `cargo publish` no longer emits `.crate` files as a final artifact for user access when the `build.build-dir` config is unset - [Upgrade the `deref_nullptr` lint from warn-by-default to deny-by-default](rust-lang/rust#148122) - [Add future-incompatibility warning for `...` function parameters without a pattern outside of `extern` blocks](rust-lang/rust#143619) - [Introduce future-compatibility warning for `repr(C)` enums whose discriminant values do not fit into a `c_int` or `c_uint`](rust-lang/rust#147017) - [Introduce future-compatibility warning against ignoring `repr(C)` types as part of `repr(transparent)`](rust-lang/rust#147185) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **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. --- - [ ] If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).

Pkgsrc changes: * Update version & checksums. * Adapt openssl-src patches to minor version update. Noteable failures at the time of commit: * The cross-build for sparc64 fails, not yet reported. Upstream changes relative to 1.92.0: Version 1.93 (2026-01-22) ========================== Language -------- - [Add warn-by-default `function_casts_as_integer` lint] (rust-lang/rust#141470) - [Add future-incompatibility warning for `...` function parameters without a pattern outside of `extern` blocks] (rust-lang/rust#143619) - [Stabilize several s390x `vector`-related target features and the `is_s390x_feature_detected!` macro] (rust-lang/rust#145656) - [Stabilize declaration of C-style variadic functions for the `system` ABI] (rust-lang/rust#145954) - [Emit error when using some keyword as a `cfg` predicate] (rust-lang/rust#146978) - [Introduce future-compatibility warning for `repr(C)` enums whose discriminant values do not fit into a `c_int` or `c_uint`] (rust-lang/rust#147017) - [Introduce future-compatibility warning against ignoring `repr(C)` types as part of `repr(transparent)`] (rust-lang/rust#147185) - [Stabilize `asm_cfg`] (rust-lang/rust#147736) - [Upgrade the `deref_nullptr` lint from warn-by-default to deny-by-default] (rust-lang/rust#148122) - [During const-evaluation, support copying pointers byte-by-byte] (rust-lang/rust#148259) - [Add warn-by-default `const_item_interior_mutations` lint to warn against calls which mutate interior mutable `const` items] (rust-lang/rust#148407) - [LUB coercions now correctly handle function item types, and functions with differing safeties] (rust-lang/rust#148602) - [Allow `const` items that contain mutable references to `static` (which is *very* unsafe, but not *always* UB)] (rust-lang/rust#148746) Compiler -------- - [Stabilize `-Cjump-tables=bool`] (rust-lang/rust#145974). The flag was previously called `-Zno-jump-tables`. - [Promote `riscv64a23-unknown-linux-gnu` to Tier 2 (without host tools)] (rust-lang/rust#148435) Platform Support ---------------- 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 --------- - [Stop internally using `specialization` on the `Copy` trait as it is unsound in the presence of lifetime dependent `Copy` implementations. This may result in some performance regressions as some standard library APIs may now call `Clone::clone` instead of performing bitwise copies] (rust-lang/rust#135634) - [Allow the global allocator to use thread-local storage and `std::thread::current()`] (rust-lang/rust#144465) - [Make `BTree::append` not update existing keys when appending an entry which already exists] (rust-lang/rust#145628) - [Don't require `T: RefUnwindSafe` for `vec::IntoIter<T>: UnwindSafe`] (rust-lang/rust#145665) Stabilized APIs --------------- - [`<MaybeUninit<T>>::assume_init_drop`] (https://doc.rust-lang.org/stable/core/mem/union.MaybeUninit.html#method.assume_init_drop) - [`<MaybeUninit<T>>::assume_init_ref`] (https://doc.rust-lang.org/stable/core/mem/union.MaybeUninit.html#method.assume_init_ref) - [`<MaybeUninit<T>>::assume_init_mut`] (https://doc.rust-lang.org/stable/core/mem/union.MaybeUninit.html#method.assume_init_mut) - [`<[MaybeUninit<T>]>::write_copy_of_slice`] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.write_copy_of_slice) - [`<[MaybeUninit<T>]>::write_clone_of_slice`] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.write_clone_of_slice) - [`String::into_raw_parts`] (https://doc.rust-lang.org/stable/std/string/struct.String.html#method.into_raw_parts) - [`Vec::into_raw_parts`] (https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#method.into_raw_parts) - [`<iN>::unchecked_neg`] (https://doc.rust-lang.org/stable/std/primitive.isize.html#method.unchecked_neg) - [`<iN>::unchecked_shl`] (https://doc.rust-lang.org/stable/std/primitive.isize.html#method.unchecked_shl) - [`<iN>::unchecked_shr`] (https://doc.rust-lang.org/stable/std/primitive.isize.html#method.unchecked_shr) - [`<uN>::unchecked_shl`] (https://doc.rust-lang.org/stable/std/primitive.usize.html#method.unchecked_shl) - [`<uN>::unchecked_shr`] (https://doc.rust-lang.org/stable/std/primitive.usize.html#method.unchecked_shr) - [`<[T]>::as_array`] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.as_array) - [`<[T]>::as_array_mut`] (https://doc.rust-lang.org/stable/std/primitive.slice.html#method.as_mut_array) - [`<*const [T]>::as_array`] (https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_array) - [`<*mut [T]>::as_array_mut`] (https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_array) - [`VecDeque::pop_front_if`] (https://doc.rust-lang.org/stable/std/collections/struct.VecDeque.html#method.pop_front_if) - [`VecDeque::pop_back_if`] (https://doc.rust-lang.org/stable/std/collections/struct.VecDeque.html#method.pop_back_if) - [`Duration::from_nanos_u128`] (https://doc.rust-lang.org/stable/std/time/struct.Duration.html#method.from_nanos_u128) - [`char::MAX_LEN_UTF8`] (https://doc.rust-lang.org/stable/std/primitive.char.html#associatedconstant.MAX_LEN_UTF8) - [`char::MAX_LEN_UTF16`] (https://doc.rust-lang.org/stable/std/primitive.char.html#associatedconstant.MAX_LEN_UTF16) - [`std::fmt::from_fn`] (https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`std::fmt::FromFn`] (https://doc.rust-lang.org/stable/std/fmt/struct.FromFn.html) Cargo ----- - [Enable CARGO_CFG_DEBUG_ASSERTIONS in build scripts based on profile] (rust-lang/cargo#16160) - [In `cargo tree`, support long forms for `--format` variables] (rust-lang/cargo#16204) - [Add `--workspace` to `cargo clean`] (rust-lang/cargo#16263) Rustdoc ----- - [Remove `#![doc(document_private_items)]`](rust-lang/rust#146495) - [Include attribute and derive macros in search filters for "macros"](rust-lang/rust#148176) - [Include extern crates in search filters for `import`](rust-lang/rust#148301) - [Validate usage of crate-level doc attributes](rust-lang/rust#149197). This means if any of `html_favicon_url`, `html_logo_url`, `html_playground_url`, `issue_tracker_base_url`, or `html_no_source` either has a missing value, an unexpected value, or a value of the wrong type, rustdoc will emit the deny-by-default lint `rustdoc::invalid_doc_attributes`. Compatibility Notes ------------------- - [Introduce `pin_v2` into the builtin attributes namespace] (rust-lang/rust#139751) - [Update bundled musl to 1.2.5] (rust-lang/rust#142682) - [On Emscripten, the unwinding ABI used when compiling with `panic=unwind` was changed from the JS exception handling ABI to the wasm exception handling ABI.] (rust-lang/rust#147224) If linking C/C++ object files with Rust objects, `-fwasm-exceptions` must be passed to the linker now. On nightly Rust, it is possible to get the old behavior with `-Zwasm-emscripten-eh=false -Zbuild-std`, but it will be removed in a future release. - The `#[test]` attribute, used to define tests, was previously ignored in various places where it had no meaning (e.g on trait methods or types). Putting the `#[test]` attribute in these places is no longer ignored, and will now result in an error; this may also result in errors when generating rustdoc. [Error when `test` attribute is applied to structs] (rust-lang/rust#147841) - Cargo now sets the `CARGO_CFG_DEBUG_ASSERTIONS` environment variable in more situations. This will cause crates depending on `static-init` versions 1.0.1 to 1.0.3 to fail compilation with "failed to resolve: use of unresolved module or unlinked crate `parking_lot`". See [the linked issue] (rust-lang/rust#150646 (comment)) for details. - [User written types in the `offset_of!` macro are now checked to be well formed.] (rust-lang/rust#150465) - `cargo publish` no longer emits `.crate` files as a final artifact for user access when the `build.build-dir` config is unset

Implement the MCP 932: Promote riscv64a23-unknown-linux-gnu to Tier 2…

1af9b63

… without host tools Changes: - Update target tier from 3 to 2 in target specification - Update platform documentation - Add CI/CD support for automatic building and distribution via rustup

rustbot assigned jieyouxu Nov 3, 2025

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jieyouxu added the relnotes Marks issues that should be documented in the release notes of the next release. label Nov 9, 2025

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Tracking issue for release notes of #148435: Implement the MCP 932: Promote riscv64a23-unknown-linux-gnu to Tier 2 #148733

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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 Nov 9, 2025

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bors merged commit 6647be9 into rust-lang:master Nov 9, 2025
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github-actions bot mentioned this pull request Nov 11, 2025

Toolchain upgrade to nightly-2026-01-30 flux-rs/flux#1345

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ZhongyaoChen mentioned this pull request Nov 13, 2025

Add riscv64a23-unknown-linux-gnu to build-manifest TARGETS #148886

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BoxyUwU mentioned this pull request Jan 7, 2026

Draft release notes for 1.93 #150760

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jieyouxu commented Nov 9, 2025

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bors commented Nov 9, 2025

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jieyouxu commented Nov 9, 2025

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bors commented Nov 9, 2025

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bors commented Nov 9, 2025

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github-actions bot commented Nov 9, 2025

Test differences

Job duration changes

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rust-timer commented Nov 10, 2025

Overall result: no relevant changes - no action needed

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6 participants

ZhongyaoChen commented Nov 3, 2025 •

edited by rustbot

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