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

Failures in combined doctests with a test runner are difficult to diagnose A-doctests Area: Documentation tests, run by rustdoc A-edition-2024 Area: The 2024 edition C-bug Category: This is a bug. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
#141064 opened May 16, 2025 by ehuss
2024 edition regression: cannot write blanket implementation for closures that return the Never type A-edition-2024 Area: The 2024 edition F-never_type `#![feature(never_type)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-edition Relevant to the edition team. T-types Relevant to the types team, which will review and decide on the PR/issue.
#139610 opened Apr 10, 2025 by alice-i-cecile
7
cargo fix --edition failed: error: expected item after attributes A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) C-bug Category: This is a bug. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. F-precise_capturing `#![feature(precise_capturing)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139567 opened Apr 9, 2025 by eval-exec
Original pin!() macro behavior cannot be expressed in Rust 2024 A-edition-2024 Area: The 2024 edition C-bug Category: This is a bug. I-lang-radar Items that are on lang's radar and will need eventual work or consideration. T-lang Relevant to the language team, which will review and decide on the PR/issue.
#138718 opened Mar 19, 2025 by m-ou-se
4
false positive for if-let-rescope on enums when the pattern exhaustively matches all cases with significant-drop fields A-diagnostics Area: Messages for errors, warnings, and lints A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. C-enhancement Category: An issue proposing an enhancement or a PR with one. I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. L-false-positive Lint: False positive (should not have fired). L-if_let_rescope Lint: if_let_rescope T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#137376 opened Feb 21, 2025 by steffahn
4
tail_expr_drop_order lint can mention internal __awaitee name A-diagnostics Area: Messages for errors, warnings, and lints A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. L-tail_expr_drop_order Lint: tail_expr_drop_order T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#136206 opened Jan 28, 2025 by kpreid
2
2024 edition migration of ref in patterns suboptimal: fixed up by clippy --fix A-clippy Area: Clippy A-edition-2024 Area: The 2024 edition A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#136047 opened Jan 25, 2025 by VorpalBlade
@dianne
9
edition 2024 migration of Command::before_exec is suboptimal and doesn't compile A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. C-bug Category: This is a bug. I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134003 opened Dec 7, 2024 by eric-seppanen
6
Bad + use<> suggestion in nested macro_rules A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. D-edition Diagnostics: An error or lint that should account for edition differences. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. L-impl_trait_overcaptures Lint: impl_trait_overcaptures T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133769 opened Dec 2, 2024 by ehuss
2
Bad suggestion in dependency_on_unit_never_type_fallback for fragment coming from a macro input A-edition-2024 Area: The 2024 edition A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. D-edition Diagnostics: An error or lint that should account for edition differences. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. L-dependency_on_unit_never_type_fallback Lint: dependency_on_unit_never_type_fallback T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133766 opened Dec 2, 2024 by ehuss
2
keyword-idents is incompatible with macros A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. D-edition Diagnostics: An error or lint that should account for edition differences. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. L-keyword_idents Lint group: keyword_idents L-keyword_idents_2024 Lint: keyword_idents_2024 T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133709 opened Dec 1, 2024 by ehuss
1
rust_2024_incompatible_pat bad suggestion with proc-macro when brace comes from input A-edition-2024 Area: The 2024 edition A-proc-macros Area: Procedural macros C-bug Category: This is a bug. D-edition Diagnostics: An error or lint that should account for edition differences. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. L-rust_2024_incompatible_pat Lint: rust_2024_incompatible_pat T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132963 opened Nov 12, 2024 by ehuss
3
Bad suggestion for macro_rules macros generated from a proc-macro A-diagnostics Area: Messages for errors, warnings, and lints A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. D-edition Diagnostics: An error or lint that should account for edition differences. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. L-unsafe_op_in_unsafe_fn Lint: unsafe_op_in_unsafe_fn T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132906 opened Nov 11, 2024 by ehuss
7
rust_2024_prelude_collisions fails with glob of underscore import A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-resolve Area: Name/path resolution done by `rustc_resolve` specifically A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. D-edition Diagnostics: An error or lint that should account for edition differences. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. 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.
#132864 opened Nov 10, 2024 by ehuss
3
unsafe_op_in_unsafe_fn causes unnecessary unsafe warnings A-diagnostics Area: Messages for errors, warnings, and lints A-edition-2024 Area: The 2024 edition A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` D-edition Diagnostics: An error or lint that should account for edition differences. D-papercut Diagnostics: An error or lint that needs small tweaks. I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. L-false-positive Lint: False positive (should not have fired). L-unsafe_op_in_unsafe_fn Lint: unsafe_op_in_unsafe_fn T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#132856 opened Nov 10, 2024 by ehuss
2
Confusing error around 2024 impl trait lifetime capture A-diagnostics Area: Messages for errors, warnings, and lints A-edition-2024 Area: The 2024 edition D-confusing Diagnostics: Confusing error or lint that should be reworked. F-lifetime_capture_rules_2024 `#![feature(lifetime_capture_rules_2024)]` I-edition-triaged Issue: This issue has been reviewed and triaged by the Edition team. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#128113 opened Jul 23, 2024 by ehuss
@compiler-errors
2
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