[TRACKING] Highlighted issues for the feature freeze

[blyxyas]

👋 Hi contributor!

Clippy is currently in a feature freeze mode until September 18, 2025. Up to this date, we intend to fix bugs rather than adding new lints or new features to existing lints.

This is a list of issues that we as the Clippy team think you could start with as a new contributor for this feature freeze. As always, you can reach out for help in Zulip and we'll steer you into the right track!

This is an updating, dynamic list. We will be adding new issues to focus on all throughout the feature freeze period. Sometimes even pointing to starting points to fixing them!

Some important documentation links that I recommend you bookmark:

• The Clippy Book
• The rustc development guide
• rustc_hir::hir documentation (rustdoc)
• The standard library documentation (rustdoc)
• The Clippy lint list

Note that to triage complex issues you can use cargo bisect-rustc and cargo minimize.

Also, make sure to include a fixes #number in your pull request description to automatically close that issue when the pull request gets accepted. You can claim issues with @rustbot claim and release your assignment with @rustbot release-assignment. If you see an issue that got fixed in a pull request just ping me and I'll go verify that everything's correct and close the issue.

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Fix ICEs

Internal compiler errors, sometimes trickier because they may require some ancient compiler knowledge. They come with back

• I-ICE Issue: Clippy panicked, giving an Internal Compilation Error (ICE) ❄️

• Clippy cannot compile library on ARM64 ubuntu #14074 "Clippy cannot compile library on ARM64 ubuntu"

Fix suggestion bugs

• I-suggestion-causes-bug Issue: The suggestion compiles but changes the code to behave in an unintended way

• clippy::question_mark ignores #[cfg]-ed out statements in let-else #13642

• excessive_precision should not lint when it's so excessive as to be clearly intentional #13855

Fix suggestions that cause errors

• I-suggestion-causes-error Issue: The suggestions provided by this Lint cause an ICE/error when applied

• Garbage clippy::expect_fun_call lint for result.expect(if b { "" } else { "" }) #15056

• cargo clippy --fix generated broken code #9583

• cargo clippy --fix tries to apply mul_add but causes [E0689] #14897

• Clippy wrong detects E0597 #13962

• disallowed-methods auto-fixes are unreliable #15067

Fix false positives

• I-false-positive Issue: The lint was triggered on code it shouldn't have

• False positive in unnecessary_to_owned when a mutable borrow would cause a compiler error #14918

• Stop suggesting alphabetic arrangement between different types of items (structs vs funcs vs mods etc) #14875

• Don't emit ptr_arg warning about unused function arguments #13728

• Stop triggering similar_names for 3-character names #14869 - Undesirable linting

• cast_possible_truncation suggestion problem #13814

• The exit lint is emitted for test target but not for bin target #13518

• In test builds, expect(clippy::missing_inline_in_public_items) does not function properly #13394 - Lint expectations

Fix lint issues with macros, constness and async

• T-macros Type: Issues with macros and macro expansion

• [literal_string_with_formatting_args] support for lazy_format #14894

• [allow(clippy::disallowed_macros)] fails for proc-macro attributes #13521 - not really beginner friendly, but macro related and interesting

• absolute_paths can trigger on code produced by a macro #13920

• False positive for infinite_loop inside async block in function #14000

• [1.84.0 regression] #[allow(clippy::disallowed_macros)] does not work on two-argument std::panic #14017

• module_name_repetitions on exported macros should use crate name, not module name #14095 (False positive with #[macro_export])

Incorrectly unfulfilled expectations

Tooling

• cargo clippy: Provides confusing help on wrong usage #11676
• Clippy with --no-deps emits unexpected warnings from deps or should have emitted warnings as expected #13983 ( ⚔ Tricky, incremental compilation involved)

Configuration

• Rust unstable features needed for the kernel Rust-for-Linux/linux#2
• Getting Rust for Linux into stable Rust: language features rust-project-goals#116

Documentation

• Add a chapter on how to review a lint in the book #15087

Completing the book would be greatly appreciated! Although I'm not sure if we have an issue for that...

[flip1995]

Important

This issue is locked for conversation. For meta discussions about the feature freeze go to the Feature Freeze Zulip topic. For questions or discussions about the separate issues, go to the issue or the clippy Zulip channel.