Closed a hole in the pattern matching structural equality check, preventing cases where a match of a constant would be allowed, despite disagreeing with a manually written PartialEq implementation, when a derive(PartialEq) implementation for that type also exists.
This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [rust](https://rust-lang.org/) ([source](https://github.com/rust-lang/rust), [changelog](https://github.com/rust-lang/rust/blob/main/RELEASES.md)) | toolchain | minor | `1.97.1` → `1.98.0` |
| [rust](https://rust-lang.org/) ([source](https://github.com/rust-lang/rust), [changelog](https://github.com/rust-lang/rust/blob/main/RELEASES.md)) | uses-with | minor | `1.97.1` → `1.98.0` |
---
### Release Notes
<details>
<summary>rust-lang/rust (rust)</summary>
### [`v1.98.0`](https://github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1980-2026-08-20)
[Compare Source](https://github.com/rust-lang/rust/compare/1.97.1...1.98.0)
\==========================
<a id="1.98.0-Language"></a>
## Language
- [Allow shortening lifetime of `&mut` when unsize-coercing, even in an invariant position.](https://github.com/rust-lang/rust/pull/149219) For example, you can now coerce a `Cell<&'long mut i32>` to a `Cell<&'short mut dyn Send>`. Such shortenings were already previously allowed when coercing a `&mut` to a `&`, or coercing a `&` to a `&`.
- [Add deny-by-default `invalid_runtime_symbol_definitions` lint and warn-by-default `suspicious_runtime_symbol_definitions` lint](https://github.com/rust-lang/rust/pull/155521)
- The lints currently specifically targets `core` runtime symbols like `memcmp`, `memset`, `strlen`, ... and is planned to be expanded in the next few releases.
- [Add warn-by-default `c_void_returns` lint to check `core::ffi::c_void` as a return type](https://github.com/rust-lang/rust/pull/156379)
<a id="1.98.0-Platform-Support"></a>
## Platform Support
- [Add `powerpc64-unknown-linux-gnuelfv2` as Tier 3](https://github.com/rust-lang/rust/pull/144220)
- [Add `aarch64-unknown-linux-pauthtest` as Tier 3 target](https://github.com/rust-lang/rust/pull/155722)
- [Promote `thumbv7a-none-eabi` to Tier 2](https://github.com/rust-lang/rust/pull/155763)
- [Promote `thumbv7a-none-eabihf` to Tier 2](https://github.com/rust-lang/rust/pull/155763)
- [Promote `thumbv7r-none-eabi` to Tier 2](https://github.com/rust-lang/rust/pull/155763)
- [Promote `thumbv7r-none-eabihf` to Tier 2](https://github.com/rust-lang/rust/pull/155763)
- [Promote `thumbv8r-none-eabihf` to Tier 2](https://github.com/rust-lang/rust/pull/155763)
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="1.98.0-Libraries"></a>
## Libraries
- [Change `Location<'_>` lifetime to `'static` in `Panic[Hook]Info`](https://github.com/rust-lang/rust/pull/146561)
- [Document panic in `RangeInclusive::from(legacy::RangeInclusive)`](https://github.com/rust-lang/rust/pull/155421)
- [Document that `ManuallyDrop`'s `Box` interaction has been fixed](https://github.com/rust-lang/rust/pull/155750)
- [Stabilize LoongArch CRC Intrinsics](https://github.com/rust-lang/rust/issues/156908)
- [The `derive` macro is available at `{core,std}::derive`.](https://github.com/rust-lang/rust/issues/154645) This was previously [unintentionally stabilized in 1.96](https://github.com/rust-lang/rust/issues/159856), but is now [explicitly accepted](https://github.com/rust-lang/rust/issues/154645) as a stabilized API.
- Please note that the MSRV for `{core,std}::derive` will be 1.96, and not 1.98.
<a id="1.98.0-Stabilized-APIs"></a>
## Stabilized APIs
- [`str::substr_range`](https://doc.rust-lang.org/stable/std/primitive.str.html#method.substr_range)
- [`[T]::subslice_range`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.subslice_range)
- [`core::fmt::NumBuffer`](https://doc.rust-lang.org/stable/core/fmt/struct.NumBuffer.html)
- [`<{integer}>::format_into`](https://doc.rust-lang.org/stable/core/primitive.usize.html#method.format_into)
- [`Send/Sync for std::process::CommandArgs`](https://doc.rust-lang.org/stable/std/process/struct.CommandArgs.html#impl-Send-for-CommandArgs%3C'a%3E)
- [`{fN}::algebraic_add`](https://doc.rust-lang.org/stable/core/primitive.f32.html#method.algebraic_add)
- [`{fN}::algebraic_sub`](https://doc.rust-lang.org/stable/core/primitive.f32.html#method.algebraic_sub)
- [`{fN}::algebraic_mul`](https://doc.rust-lang.org/stable/core/primitive.f32.html#method.algebraic_mul)
- [`{fN}::algebraic_div`](https://doc.rust-lang.org/stable/core/primitive.f32.html#method.algebraic_div)
- [`{fN}::algebraic_rem`](https://doc.rust-lang.org/stable/core/primitive.f32.html#method.algebraic_rem)
- [`NonZero<{integer}>::from_str_radix`](https://doc.rust-lang.org/stable/core/num/struct.NonZero.html#method.from_str_radix-4)
- [`String::from_utf16le`](https://doc.rust-lang.org/stable/std/string/struct.String.html#method.from_utf16le)
- [`String::from_utf16le_lossy`](https://doc.rust-lang.org/stable/std/string/struct.String.html#method.from_utf16le_lossy)
- [`String::from_utf16be`](https://doc.rust-lang.org/stable/std/string/struct.String.html#method.from_utf16be)
- [`String::from_utf16be_lossy`](https://doc.rust-lang.org/stable/std/string/struct.String.html#method.from_utf16be_lossy)
- [`[T]::strip_circumfix`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.strip_circumfix)
- [`str::strip_circumfix`](https://doc.rust-lang.org/stable/core/primitive.str.html#method.strip_circumfix)
- [`Atomic<T>::from_mut`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.Atomic.html#method.from_mut)
- [`Atomic<T>::get_mut_slice`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.Atomic.html#method.get_mut_slice)
- [`Atomic<T>::from_mut_slice`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.Atomic.html#method.from_mut_slice)
- [`std::range::legacy`](https://doc.rust-lang.org/stable/std/range/legacy/index.html)
<a id="1.98.0-Compatibility-Notes"></a>
## Compatibility Notes
- [If fully elided, lifetime bounds of trait object types may now resolve differently or even get rejected in very specific niche scenarios](https://github.com/rust-lang/rust/pull/129543)
- [Error in more cases of ambiguous imports](https://github.com/rust-lang/rust/pull/145108)
- [Switch the destructors implementation for thread locals on Windows to use Fiber Local Storage (FLS)](https://github.com/rust-lang/rust/pull/148799)
- [Convert some cases of the `ambiguous_glob_imports` lint into a hard error](https://github.com/rust-lang/rust/pull/149195)
- [Where-bounds of the form `Type = Type` and `Type == Type` are no longer syntactically allowed](https://github.com/rust-lang/rust/pull/153513)
- [Ensure Send/Sync is not implemented for std::env::Vars{,Os}](https://github.com/rust-lang/rust/pull/155153)
- [Fix that in some attributes, arguments were not properly rejected](https://github.com/rust-lang/rust/pull/155193)
- [`repr(transparent)` is now more strict about which fields have "trivial" layout and hence can be ignored: `repr(C)` types, types with private fields, and `#[non_exhaustive]` types are no longer considered "trivial"](https://github.com/rust-lang/rust/pull/155299)
- [Correctly check whether types have equal size in `transmute()` when some `repr` attributes are involved.](https://github.com/rust-lang/rust/pull/155418)
- [More characters are escaped when printing strings and chars](https://github.com/rust-lang/rust/pull/155527)
- [Implement fast path for `derive(PartialOrd)` when deriving `Ord`](https://github.com/rust-lang/rust/pull/155598)
This can break crates in practice where a type's PartialOrd and Ord impls were inconsistent with each other.
- [Add temporary scope to `assert_eq` and `assert_ne`](https://github.com/rust-lang/rust/pull/155739)
- Closed a hole in the pattern matching [structural equality](https://doc.rust-lang.org/reference/patterns.html#constant-patterns) check, preventing cases where a match of a constant would be allowed, despite disagreeing with a manually written `PartialEq` implementation, when a `derive(PartialEq)` implementation for that type also exists.
- [On Emscripten the WASM exception handling ABI is now unconditionally used](https://github.com/rust-lang/rust/pull/156928) The `-Zemscripten-wasm-eh=false` flag to switch back to JS exceptions has been removed.
- [The UNSAFE\_CODE lint is now consistently emitted for all unsafe attributes](https://github.com/rust-lang/rust/pull/157201)
- [Solaris: remove `File::lock` implementation, it has the wrong semantics (return "unsupported" instead)](https://github.com/rust-lang/rust/pull/157509)
- [Windows-gnu targets now specify baseline tools versions](https://github.com/rust-lang/rust/pull/158020)
- [rustfmt now discovers module files that are defined in `cfg_select!`](https://github.com/rust-lang/rust/pull/158372)
This may cause more code to be formatted which was previously ignored.
</details>
---
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This PR contains the following updates:
1.97.1→1.98.01.97.1→1.98.0Release Notes
rust-lang/rust (rust)
v1.98.0Compare Source
==========================
Language
&mutwhen unsize-coercing, even in an invariant position. For example, you can now coerce aCell<&'long mut i32>to aCell<&'short mut dyn Send>. Such shortenings were already previously allowed when coercing a&mutto a&, or coercing a&to a&.invalid_runtime_symbol_definitionslint and warn-by-defaultsuspicious_runtime_symbol_definitionslintcoreruntime symbols likememcmp,memset,strlen, ... and is planned to be expanded in the next few releases.c_void_returnslint to checkcore::ffi::c_voidas a return typePlatform Support
powerpc64-unknown-linux-gnuelfv2as Tier 3aarch64-unknown-linux-pauthtestas Tier 3 targetthumbv7a-none-eabito Tier 2thumbv7a-none-eabihfto Tier 2thumbv7r-none-eabito Tier 2thumbv7r-none-eabihfto Tier 2thumbv8r-none-eabihfto Tier 2Refer to Rust's platform support page
for more information on Rust's tiered platform support.
Libraries
Location<'_>lifetime to'staticinPanic[Hook]InfoRangeInclusive::from(legacy::RangeInclusive)ManuallyDrop'sBoxinteraction has been fixedderivemacro is available at{core,std}::derive. This was previously unintentionally stabilized in 1.96, but is now explicitly accepted as a stabilized API.{core,std}::derivewill be 1.96, and not 1.98.Stabilized APIs
str::substr_range[T]::subslice_rangecore::fmt::NumBuffer<{integer}>::format_intoSend/Sync for std::process::CommandArgs{fN}::algebraic_add{fN}::algebraic_sub{fN}::algebraic_mul{fN}::algebraic_div{fN}::algebraic_remNonZero<{integer}>::from_str_radixString::from_utf16leString::from_utf16le_lossyString::from_utf16beString::from_utf16be_lossy[T]::strip_circumfixstr::strip_circumfixAtomic<T>::from_mutAtomic<T>::get_mut_sliceAtomic<T>::from_mut_slicestd::range::legacyCompatibility Notes
ambiguous_glob_importslint into a hard errorType = TypeandType == Typeare no longer syntactically allowedrepr(transparent)is now more strict about which fields have "trivial" layout and hence can be ignored:repr(C)types, types with private fields, and#[non_exhaustive]types are no longer considered "trivial"transmute()when somereprattributes are involved.derive(PartialOrd)when derivingOrdThis can break crates in practice where a type's PartialOrd and Ord impls were inconsistent with each other.
assert_eqandassert_nePartialEqimplementation, when aderive(PartialEq)implementation for that type also exists.-Zemscripten-wasm-eh=falseflag to switch back to JS exceptions has been removed.File::lockimplementation, it has the wrong semantics (return "unsupported" instead)cfg_select!This may cause more code to be formatted which was previously ignored.
Configuration
📅 Schedule: (UTC)
🚦 Automerge: Enabled.
♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about these updates again.
This PR has been generated by Mend Renovate CLI.