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Issues: rust-lang/rust

Draft release notes for 1.88.0
#141598 opened May 26, 2025 by Mark-Simulacrum
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Issues list

Tweak fast path trait handling perf-regression Performance regression. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#141731 opened May 29, 2025 by compiler-errors • Draft
@lcnr
6
Structurally normalize types as needed in projection_ty_core S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#141703 opened May 28, 2025 by compiler-errors Loading…
2
@lcnr
12
Fast path for stalled obligations on self ty perf-regression Performance regression. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#141681 opened May 28, 2025 by compiler-errors Loading…
@lcnr
18
Make some assertions in solver into debug assertions S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#141651 opened May 27, 2025 by compiler-errors Loading…
@lcnr
13
lint direct use of rustc_type_ir S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#141614 opened May 26, 2025 by rperier Loading…
@compiler-errors
15
add more TypeFlags fast paths, cache param_env canonicalization A-rustdoc-search Area: Rustdoc's search feature S-waiting-on-perf Status: Waiting on a perf run to be completed. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. 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. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#141451 opened May 23, 2025 by lcnr Loading…
@compiler-errors
13
ICE: could not replace AliasTerm with term from from dyn Binder -Zinline-mir Unstable option: Enable MIR inlining -Zvalidate-mir Unstable option: MIR validation C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#141424 opened May 23, 2025 by matthiaskrgr
3
Stabilize if let guards (feature(if_let_guard)) A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. A-meta Area: Issues & PRs about the rust-lang/rust repository itself A-rustc-dev-guide Area: rustc-dev-guide A-testsuite Area: The testsuite used to check the correctness of rustc disposition-merge This issue / PR is in PFCP or FCP with a disposition to merge it. final-comment-period In the final comment period and will be merged soon unless new substantive objections are raised. I-lang-radar Items that are on lang's radar and will need eventual work or consideration. needs-fcp This change is insta-stable, or significant enough to need a team FCP to proceed. S-waiting-on-documentation Status: Waiting on approved PRs to documentation before merging S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-infra Relevant to the infrastructure team, which will review and decide on the PR/issue. T-lang Relevant to the language team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#141295 opened May 20, 2025 by Kivooeo Loading…
5 tasks done
@est31
95
Only assemble impl candidates if there are no candidates that would have shadowed it perf-regression Performance regression. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#141226 opened May 18, 2025 by compiler-errors • Draft
@lcnr
7
[CRATER] probe fallout of dyn overlap S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#140824 opened May 8, 2025 by compiler-errors • Draft
@lcnr
13
[PERF] eagerly compute sub_relations again perf-regression Performance regression. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#140752 opened May 7, 2025 by lcnr Loading…
7
ICE: next solver: failed to resolve instance for <e<FilterFn<{closure@code.rs:31:15: 31:17}> C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#140577 opened May 2, 2025 by matthiaskrgr
4
wf: emit projection goal for aliases perf-regression Performance regression. S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. S-waiting-on-fcp Status: PR is in FCP and is awaiting for FCP to complete. T-types Relevant to the types team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#140558 opened May 1, 2025 by lcnr Loading…
2
@compiler-errors
29
support revealing uses in HIR typeck S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#140497 opened Apr 30, 2025 by lcnr • Draft
1
@compiler-errors
12
Incompletely allow overloaded call from opaque when self type bottoms out in infer S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#140496 opened Apr 30, 2025 by compiler-errors • Draft
1
@lcnr
4
Incompletely prefer opaque type bounds when self type bottoms out in infer S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#140405 opened Apr 28, 2025 by compiler-errors • Draft
1
@lcnr
5
WIP: Unstable impls A-attributes Area: Attributes (`#[…]`, `#![…]`) S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#140399 opened Apr 28, 2025 by tiif • Draft
@BoxyUwU
5
eagerly compute sub_relations again perf-regression Performance regression. S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. S-waiting-on-perf Status: Waiting on a perf run to be completed. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#140375 opened Apr 27, 2025 by lcnr • Draft
@compiler-errors
36
Initial UnsafePinned implementation [Part 2: Lowering] A-coroutines Area: Coroutines F-coroutines `#![feature(coroutines)]` F-unsafe_pinned `#![feature(unsafe_pinned)]` S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#139896 opened Apr 16, 2025 by Sky9x • Draft
@lcnr
10
New const traits syntax S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. 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. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#139858 opened Apr 15, 2025 by oli-obk Loading…
@compiler-errors
16
opaque type leakage and RPITIT normalization A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. F-return_position_impl_trait_in_trait `#![feature(return_position_impl_trait_in_trait)]` WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#139788 opened Apr 14, 2025 by lcnr
3
Remove Symbol from Named variant of BoundRegionKind/LateParamRegionKind perf-regression Performance regression. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#139598 opened Apr 9, 2025 by compiler-errors • Draft
9
support revealing uses of opaques perf-regression Performance regression. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#139587 opened Apr 9, 2025 by lcnr • Draft
@compiler-errors
67
[WIP] mgca: Add ConstArg representation for const items A-const-generics Area: const generics (parameters and arguments) F-min_generic_const_args `#![feature(min_generic_const_args)]` S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#139558 opened Apr 8, 2025 by camelid • Draft
@oli-obk @BoxyUwU
26
ICE: next solver: errors selecting obligation during MIR typeck: [Ambiguity] C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)
#139409 opened Apr 5, 2025 by matthiaskrgr
@compiler-errors
1
ProTip! Exclude everything labeled bug with -label:bug.