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Issues list

Baffling suggestion labelled "help: try introducing a local generic parameter here" A-const-generics Area: const generics (parameters and arguments) A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) D-confusing Diagnostics: Confusing error or lint that should be reworked. 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 T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#141872 opened Jun 1, 2025 by nabijaczleweli
2
False positive unused_lifetime A-diagnostics Area: Messages for errors, warnings, and lints C-bug Category: This is a bug. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. L-unused_lifetimes Lint: unused_lifetimes T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#141784 opened May 30, 2025 by matthiaskrgr
1
False positive unused_braces A-diagnostics Area: Messages for errors, warnings, and lints A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. C-bug Category: This is a bug. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. L-false-positive Lint: False positive (should not have fired). L-unused_braces Lint: unused_braces T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#141783 opened May 30, 2025 by matthiaskrgr
1
@ChAoSUnItY
1
refining_impl_trait: The suggested fix does not yet take precise capturing into account. A-diagnostics Area: Messages for errors, warnings, and lints A-impl-trait Area: `impl Trait`. Universally / existentially quantified anonymous types with static dispatch. A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. L-refining_impl_trait Lint group: refining_impl_trait T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#141047 opened May 15, 2025 by Tamschi
"[E0603] unit variant X is private. help: import X directly" suggests invalid path in private module A-diagnostics Area: Messages for errors, warnings, and lints A-resolve Area: Name/path resolution done by `rustc_resolve` specifically A-visibility Area: Visibility / privacy D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#140831 opened May 8, 2025 by ZaneErebos
@xizheyin
1
Missing use std::fmt::Write; with write!: rustc suggests editing the sysroot A-diagnostics Area: Messages for errors, warnings, and lints 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` D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139830 opened Apr 15, 2025 by Sky9x
1
1
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
Inappropriate suggestion when mismatched types occur in the dbg! macro A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139253 opened Apr 2, 2025 by jjl9807
2
@xizheyin
2
Misleading diagnostic for error[E0277] A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139251 opened Apr 2, 2025 by jjl9807
1
unicode code point suggestion for non-ASCII character in byte string literal is incorrect A-diagnostics Area: Messages for errors, warnings, and lints A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` A-Unicode Area: Unicode D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139226 opened Apr 1, 2025 by mozkeeler
1
@tapanprakasht
1
Confusing suggestions for error[E0599]: cannot write into String A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139051 opened Mar 28, 2025 by jjl9807
2
1
Misleading compiler suggestion: Swapp the equality in rustlib due to mismatched types in user code A-diagnostics Area: Messages for errors, warnings, and lints A-trait-system Area: Trait system D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139050 opened Mar 28, 2025 by jjl9807
2
@xizheyin
2
Misleading compiler suggestion: Add semicolon in rustlib due to missing ; in user code A-diagnostics Area: Messages for errors, warnings, and lints A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#139049 opened Mar 28, 2025 by jjl9807
1
@xizheyin
2
fix suggestion for E0716 (temporary value dropped while borrowed) A-diagnostics Area: Messages for errors, warnings, and lints A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code.
#137486 opened Feb 23, 2025 by reddevilmidzy
1
@chenyukang
const* suggestions won't compile, and no suggestion for *const A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#136602 opened Feb 5, 2025 by Rudxain
Suggested fix for "cannot find macro ... in this scope" does not compile A-diagnostics Area: Messages for errors, warnings, and lints 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-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#136140 opened Jan 27, 2025 by rusty-snake
1
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
explicit-outlives-requirements suggestion breaks code A-diagnostics Area: Messages for errors, warnings, and lints C-bug Category: This is a bug. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134902 opened Dec 29, 2024 by matthiaskrgr
Bad parse error on token sequences safe unsafe and unsafe safe A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST D-confusing Diagnostics: Confusing error or lint that should be reworked. D-incorrect Diagnostics: A diagnostic that is giving misleading or incorrect information. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. 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.
#134580 opened Dec 20, 2024 by ionicmc-rs
18
Incorrect suggestion to derive Clone on Vec directly A-diagnostics Area: Messages for errors, warnings, and lints A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134471 opened Dec 18, 2024 by cyrgani
1
@cyrgani
1
Invalid suggestion on anonymous lifetime parameter in precise capturing list if there are no input lifetimes A-diagnostics Area: Messages for errors, warnings, and lints 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-verbose Diagnostics: Too much output caused by a single piece of incorrect code. F-precise_capturing `#![feature(precise_capturing)]` P-low Low priority T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#134194 opened Dec 12, 2024 by fmease
1
3
Some code suggestions failed to be shown due to span tweaking A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The lexing & parsing of Rust source code to an AST A-suggestion-diagnostics Area: Suggestions generated by the compiler applied by `cargo fix` C-bug Category: This is a bug. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-debug-assertions This issue requires a build of rustc or tooling with debug-assertions in some way 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.
#134061 opened Dec 9, 2024 by js2xxx
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
E0596 error should suggest adding mut rather than a type signature A-diagnostics Area: Messages for errors, warnings, and lints D-incorrect Diagnostics: A diagnostic that is giving misleading or incorrect information. D-invalid-suggestion Diagnostics: A structured suggestion resulting in incorrect code. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
#133939 opened Dec 5, 2024 by josephcsible
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
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