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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

closure_lifetime_binder with explicit lifetime annotation gives ICE: "cannot convert ReLateParam […] to a region vid" A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug. F-closure_lifetime_binder `#![feature(closure_lifetime_binder)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ 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.
#141504 opened May 24, 2025 by theemathas
6
Inconsistent lifetime checks between function and field access. A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#141481 opened May 24, 2025 by konnorandrews
1
Type equality bounds disable implied projection outlives bounds A-implied-bounds Area: Implied bounds / inferred outlives-bounds A-lifetimes Area: Lifetimes / regions A-trait-system Area: Trait system C-bug Category: This is a bug. T-types Relevant to the types team, which will review and decide on the PR/issue.
#141054 opened May 15, 2025 by QuineDot
Make trait aliases eligible generic containers wrt. ambient object lifetime defaults A-dyn-trait Area: trait objects, vtable layout A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug. F-trait_alias `#![feature(trait_alias)]` S-blocked Status: Blocked on something else such as an RFC or other implementation work. T-types Relevant to the types team, which will review and decide on the PR/issue.
#140710 opened May 6, 2025 by fmease
@fmease
Oddity with lifetime elision and type aliases A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug. I-lang-radar Items that are on lang's radar and will need eventual work or consideration. I-types-nominated Nominated for discussion during a types team meeting. needs-crater This change needs a crater run to check for possible breakage in the ecosystem. T-compiler Relevant to the compiler 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.
#140611 opened May 3, 2025 by traviscross
9
RPIT(IT)s "leak" internal implementation details of lifetime capturing via boundedness A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug. 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. T-types Relevant to the types team, which will review and decide on the PR/issue.
#140517 opened Apr 30, 2025 by Y-jiji
14
GAT: Fails to compile with additional bounds A-lifetimes Area: Lifetimes / regions A-trait-system Area: Trait system A-type-system Area: Type system C-bug Category: This is a bug. T-types Relevant to the types team, which will review and decide on the PR/issue.
#139207 opened Apr 1, 2025 by Ddystopia
9
Compiler error "implementation of Send is not general enough" when using static lifetime reference with async closure A-async-closures `async || {}` A-lifetimes Area: Lifetimes / regions A-trait-system Area: Trait system C-bug Category: This is a bug. needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138494 opened Mar 14, 2025 by zhuerzhuer
Lifetime must be 'static, but why? A-borrow-checker Area: The borrow checker A-diagnostics Area: Messages for errors, warnings, and lints A-lifetimes Area: Lifetimes / regions D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#138408 opened Mar 12, 2025 by timokoesters
Too conservative lifetime check in match arm with if condition. A-borrow-checker Area: The borrow checker A-lifetimes Area: Lifetimes / regions A-patterns Relating to patterns and pattern matching C-enhancement Category: An issue proposing an enhancement or a PR with one. T-types Relevant to the types team, which will review and decide on the PR/issue.
#137878 opened Mar 2, 2025 by sswybd
Potentially false positive of "lifetime may not live long enough" after introduction of Sized bound on associated type A-lifetimes Area: Lifetimes / regions A-trait-system Area: Trait system C-bug Category: This is a bug. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#137184 opened Feb 17, 2025 by yannham
4
Change in leaf function causes unrelated compilation error in root function A-lifetimes Area: Lifetimes / regions A-trait-system Area: Trait system C-bug Category: This is a bug. E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-types Relevant to the types team, which will review and decide on the PR/issue.
#135652 opened Jan 17, 2025 by 0xdeafbeef
2
Inconsistent lifetime inference with return impl Future/BoxFuture and higher ranked lifetimes A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#135619 opened Jan 17, 2025 by weiznich
Missing lifetimes needed in impl item don't have enough help for newcomer devs A-diagnostics Area: Messages for errors, warnings, and lints A-lifetimes Area: Lifetimes / regions A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. D-newcomer-roadblock Diagnostics: Confusing error or lint; hard to understand for new users. D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#135589 opened Jan 16, 2025 by estebank
1 of 9 tasks
Precise captures in ITIAT are not refining A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. A-lifetimes Area: Lifetimes / regions A-trait-system Area: Trait system C-bug Category: This is a bug. F-impl_trait_in_assoc_type `#![feature(impl_trait_in_assoc_type)]` requires-nightly This issue requires a nightly compiler in some way. S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue T-types Relevant to the types team, which will review and decide on the PR/issue.
#135144 opened Jan 6, 2025 by QuineDot
2
RPIT associated type lifetime bound is ignored A-associated-items Area: Associated items (types, constants & functions) A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug. S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue T-types Relevant to the types team, which will review and decide on the PR/issue.
#135006 opened Jan 1, 2025 by LHolten
1
@compiler-errors
2
"implementation of Fn is not general enough" on some conditions when using closures A-diagnostics Area: Messages for errors, warnings, and lints A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#135004 opened Jan 1, 2025 by Alogani
Incorrect diagnostic error[E0309]: the parameter type T may not live long enough, suggests duplicate bound A-diagnostics Area: Messages for errors, warnings, and lints A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. A-lifetimes Area: Lifetimes / regions A-trait-system Area: Trait system D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. 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.
#133943 opened Dec 6, 2024 by kosayoda
2
Mixing 'static and 'this with iterators or vectors doesn't correctly shorten lifetime to the workable shorter version. A-lifetimes Area: Lifetimes / regions C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-types Relevant to the types team, which will review and decide on the PR/issue.
#132291 opened Oct 28, 2024 by VorpalBlade
Overly restrictive lifetime in std::panic::Location::file A-lifetimes Area: Lifetimes / regions A-panic Area: Panicking machinery T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.
#131770 opened Oct 16, 2024 by ijchen
1
@ijchen
5
Adding explicit lifetimes causes compilation error A-async-await Area: Async & Await A-lifetimes Area: Lifetimes / regions C-discussion Category: Discussion or questions that doesn't represent real issues.
#131336 opened Oct 6, 2024 by varqox
3
GAT type Assoc<T: ?Sized> implicitly requires Self to be 'static A-borrow-checker Area: The borrow checker A-diagnostics Area: Messages for errors, warnings, and lints A-dyn-trait Area: trait objects, vtable layout A-lifetimes Area: Lifetimes / regions D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#131008 opened Sep 29, 2024 by Veetaha
4
Unhelpful error message "ambiguous lifetime bound, explicit lifetime bound required" A-diagnostics Area: Messages for errors, warnings, and lints A-dyn-trait Area: trait objects, vtable layout A-lifetimes Area: Lifetimes / regions D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#130952 opened Sep 27, 2024 by oberien
1
ICE: "error performing operation: fully_perform" on type inference for trait object with HRTB over GAT A-dyn-trait Area: trait objects, vtable layout A-GATs Area: Generic associated types (GATs) A-higher-ranked Area: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs) A-lifetimes Area: Lifetimes / regions A-trait-system Area: Trait system C-bug Category: This is a bug. fixed-by-next-solver Fixed by the next-generation trait solver, `-Znext-solver`. 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.
#130797 opened Sep 24, 2024 by arvidfm
1
Compiler freezes on trait with generic associated type A-associated-items Area: Associated items (types, constants & functions) A-GATs Area: Generic associated types (GATs) A-lifetimes Area: Lifetimes / regions A-trait-system Area: Trait system C-bug Category: This is a bug. fixed-by-next-solver Fixed by the next-generation trait solver, `-Znext-solver`. I-hang Issue: The compiler never terminates, due to infinite loops, deadlock, livelock, etc. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#130640 opened Sep 20, 2024 by antonilol
1
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