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Issues list

Type mismatch in a associated type bound don't point at said associated type A-associated-items Area: Associated items (types, constants & functions) A-diagnostics Area: Messages for errors, warnings, and lints D-imprecise-spans Diagnostics: spans don't point to exactly the erroneous code T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139531 opened Apr 8, 2025 by ShE3py
1
rustdoc thinks Deref extends to functions that use Pin<&mut Self> A-associated-items Area: Associated items (types, constants & functions) C-bug Category: This is a bug. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#139458 opened Apr 6, 2025 by jnbooth
1
Bug when implementing From on an associated type defined in an external crate A-associated-items Area: Associated items (types, constants & functions) A-coherence Area: Coherence A-trait-system Area: Trait system 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.
#138816 opened Mar 22, 2025 by roeeshoshani
2
error performing operation: fully_perform in ascribe_user_type A-associated-items Area: Associated items (types, constants & functions) A-type-system Area: Type system 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. T-types Relevant to the types team, which will review and decide on the PR/issue.
#138707 opened Mar 19, 2025 by VincentVanlaer
2
super trait bounds can result in unconstrained regions A-associated-items Area: Associated items (types, constants & functions) 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.
#136547 opened Feb 4, 2025 by lcnr
@compiler-errors
2
Associated Type Bounds on Trait Bounds on GAT produce error A-associated-items Area: Associated items (types, constants & functions) A-trait-system Area: Trait system C-bug Category: This is a bug. F-associated_type_bounds `#![feature(associated_type_bounds)]` T-types Relevant to the types team, which will review and decide on the PR/issue.
#136144 opened Jan 27, 2025 by T0mstone
1
Rust can't figure out that two types are the same with supertraits and associated types. A-associated-items Area: Associated items (types, constants & functions) A-trait-system Area: Trait system C-bug Category: This is a bug. F-associated_type_bounds `#![feature(associated_type_bounds)]` T-types Relevant to the types team, which will review and decide on the PR/issue.
#135979 opened Jan 24, 2025 by theemathas
1
Item-bounds can be used to non-productively prove themselves A-associated-items Area: Associated items (types, constants & functions) I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness P-medium Medium priority 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.
#135246 opened Jan 8, 2025 by lcnr
1
Typesystem soundness hole involving cyclically-defined ATIT, and normalization in trait bounds A-associated-items Area: Associated items (types, constants & functions) A-trait-system Area: Trait system A-type-system Area: Type system C-bug Category: This is a bug. I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness P-medium Medium priority T-types Relevant to the types team, which will review and decide on the PR/issue.
#135011 opened Jan 2, 2025 by steffahn
21
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
Trait resolution fails, and then rustc hangs. A-associated-items Area: Associated items (types, constants & functions) A-higher-ranked Area: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs) 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. T-types Relevant to the types team, which will review and decide on the PR/issue.
#134312 opened Dec 14, 2024 by frankmcsherry
1
Compiler fails to see an existing trait implementation for an indirectly referred type A-associated-items Area: Associated items (types, constants & functions) 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`. T-types Relevant to the types team, which will review and decide on the PR/issue.
#132913 opened Nov 11, 2024 by newpavlov
1
Higher-ranked trait bounds in function signature incorrectly require bounds on the impl A-associated-items Area: Associated items (types, constants & functions) A-higher-ranked Area: Higher-ranked things (e.g., lifetimes, types, trait bounds aka HRTBs) 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`. T-types Relevant to the types team, which will review and decide on the PR/issue.
#132089 opened Oct 24, 2024 by 8000thCube
1
projecting to assoc type of supertrait that is implemented differently for trait object goes wrong A-associated-items Area: Associated items (types, constants & functions) A-dyn-trait Area: trait objects, vtable layout C-bug Category: This is a bug. I-unsound Issue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness requires-nightly This issue requires a nightly compiler in some way. T-types Relevant to the types team, which will review and decide on the PR/issue.
#131891 opened Oct 18, 2024 by lukas-code
@compiler-errors
4
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
Trait inference is broken for unnamed structs A-associated-items Area: Associated items (types, constants & functions) A-trait-system Area: Trait system C-bug Category: This is a bug. E-help-wanted Call for participation: Help is requested to fix this issue. 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-lang Relevant to the language team, which will review and decide on the PR/issue.
#130318 opened Sep 13, 2024 by gerben-stavenga
@maxcabrajac
3
Invalid suggestion for ambiguous associated type A-associated-items Area: Associated items (types, constants & functions) A-diagnostics Area: Messages for errors, warnings, and lints C-bug Category: This is a bug. D-incorrect Diagnostics: A diagnostic that is giving misleading or incorrect information. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#130166 opened Sep 9, 2024 by junbl
ICE with higher order associated types A-associated-items Area: Associated items (types, constants & functions) A-GATs Area: Generic associated types (GATs) 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.
#129372 opened Aug 21, 2024 by LHolten
8
Associated function from super traits not accessible via sub traits A-associated-items Area: Associated items (types, constants & functions) A-diagnostics Area: Messages for errors, warnings, and lints A-dyn-trait Area: trait objects, vtable layout A-resolve Area: Name/path resolution done by `rustc_resolve` specifically C-bug Category: This is a bug. D-incorrect Diagnostics: A diagnostic that is giving misleading or incorrect information. D-verbose Diagnostics: Too much output caused by a single piece of incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#124438 opened Apr 27, 2024 by WaffleLapkin
3
ICE: error performing operation: fully_perform A-associated-items Area: Associated items (types, constants & functions) A-dyn-trait Area: trait objects, vtable layout 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. T-types Relevant to the types team, which will review and decide on the PR/issue.
#124189 opened Apr 20, 2024 by cushionbadak
4
Compiler wants to add bound which already exists to generic. A-associated-items Area: Associated items (types, constants & functions) A-diagnostics Area: Messages for errors, warnings, and lints A-trait-system Area: Trait system C-bug Category: This is a bug. F-trait_alias `#![feature(trait_alias)]` fixed-by-next-solver Fixed by the next-generation trait solver, `-Znext-solver`. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#123513 opened Apr 5, 2024 by meltah
3
Conflicting implementation should not exist after generic trait paramters have been constrained to associated types A-associated-items Area: Associated items (types, constants & functions) A-coherence Area: Coherence A-trait-system Area: Trait system C-discussion Category: Discussion or questions that doesn't represent real issues. 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.
#123450 opened Apr 4, 2024 by ZhennanWu
Compiler forgets about function-level where clause when a clause for an associated type is present A-associated-items Area: Associated items (types, constants & functions) 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`. T-types Relevant to the types team, which will review and decide on the PR/issue.
#123173 opened Mar 28, 2024 by sfackler
1
Unable to see through associated type with where clause on GAT A-associated-items Area: Associated items (types, constants & functions) A-GATs Area: Generic associated types (GATs) 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`. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#122745 opened Mar 19, 2024 by benluelo
2
Cannot call method that requires a non-array unsized coercion, contrary to the reference A-associated-items Area: Associated items (types, constants & functions) C-bug Category: This is a bug. T-types Relevant to the types team, which will review and decide on the PR/issue.
#122708 opened Mar 18, 2024 by kupiakos
1
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