Changelog for Clippy 1.89 🌽 (#15375)

Violets are red,
Roses are blue,
As August winds whisper,
Take a chance, then rest too.

<hr>

Appreciate it as always @xFrednet

<img width="601" height="744" alt="image"
src="https://github.com/user-attachments/assets/a0e4af41-da97-4565-881b-549ed51d7fc5"
/>

<hr>

Cats for the next release can be traditionally nominated in the comments
:D
Please be more active and cat-minded 😻

changelog: none

r? flip1995

Author: flip1995

CHANGELOG.md

@@ -6,7 +6,105 @@ document.
 
 ## Unreleased / Beta / In Rust Nightly
 
-[03a5b6b9...master](https://github.com/rust-lang/rust-clippy/compare/03a5b6b9...master)
+[4ef75291...master](https://github.com/rust-lang/rust-clippy/compare/4ef75291...master)
+
+## Rust 1.89
+
+Current stable, released 2025-08-07
+
+[View all 137 merged pull requests](https://github.com/rust-lang/rust-clippy/pulls?q=merged%3A2025-05-01T16%3A52%3A57Z..2025-06-13T08%3A33%3A27Z+base%3Amaster)
+
+### New Lints
+
+* Added [`coerce_container_to_any`] to `nursery` [#14812](https://github.com/rust-lang/rust-clippy/pull/14812)
+* Added [`ip_constant`] to `pedantic` [#14878](https://github.com/rust-lang/rust-clippy/pull/14878)
+* Added [`infallible_try_from`] to `suspicious` [#14813](https://github.com/rust-lang/rust-clippy/pull/14813)
+* Added [`doc_suspicious_footnotes`] to `suspicious` [#14708](https://github.com/rust-lang/rust-clippy/pull/14708)
+* Added [`pointer_format`] to `restriction` [#14792](https://github.com/rust-lang/rust-clippy/pull/14792)
+* Added [`useless_concat`] to `complexity` [#13829](https://github.com/rust-lang/rust-clippy/pull/13829)
+* Added [`cloned_ref_to_slice_refs`] to `perf` [#14284](https://github.com/rust-lang/rust-clippy/pull/14284)
+* Added [`confusing_method_to_numeric_cast`] to `suspicious` [#13979](https://github.com/rust-lang/rust-clippy/pull/13979)
+
+### Moves and Deprecations
+
+* Removed superseded lints: `transmute_float_to_int`, `transmute_int_to_char`,
+  `transmute_int_to_float`, `transmute_num_to_bytes` (now in rustc)
+  [#14703](https://github.com/rust-lang/rust-clippy/pull/14703)
+
+### Enhancements
+
+* [`module_name_repetitions`] added `allow_exact_repetitions` configuration option
+  [#14261](https://github.com/rust-lang/rust-clippy/pull/14261)
+* [`missing_docs_in_private_items`] added `allow_unused` config for underscored fields
+  [#14453](https://github.com/rust-lang/rust-clippy/pull/14453)
+* [`unnecessary_unwrap`] fixed being emitted twice in closure
+  [#14763](https://github.com/rust-lang/rust-clippy/pull/14763)
+* [`needless_return`] lint span no longer wraps to previous line
+  [#14790](https://github.com/rust-lang/rust-clippy/pull/14790)
+* [`trivial-copy-size-limit`] now defaults to `target_pointer_width`
+  [#13319](https://github.com/rust-lang/rust-clippy/pull/13319)
+* [`integer_division`] fixed false negative for NonZero denominators
+  [#14664](https://github.com/rust-lang/rust-clippy/pull/14664)
+* [`arbitrary_source_item_ordering`] no longer lints inside items with `#[repr]` attribute
+  [#14610](https://github.com/rust-lang/rust-clippy/pull/14610)
+* [`excessive_precision`] no longer triggers on exponent with leading zeros
+  [#14824](https://github.com/rust-lang/rust-clippy/pull/14824)
+* [`to_digit_is_some`] no longer lints in const contexts when MSRV is below 1.87
+  [#14771](https://github.com/rust-lang/rust-clippy/pull/14771)
+
+### False Positive Fixes
+
+* [`std_instead_of_core`] fixed FP when part of the `use` cannot be replaced
+  [#15016](https://github.com/rust-lang/rust-clippy/pull/15016)
+* [`unused_unit`] fixed FP for `Fn` bounds
+  [#14962](https://github.com/rust-lang/rust-clippy/pull/14962)
+* [`unnecessary_debug_formatting`] fixed FP inside `Debug` impl
+  [#14955](https://github.com/rust-lang/rust-clippy/pull/14955)
+* [`assign_op_pattern`] fixed FP on unstable const trait
+  [#14886](https://github.com/rust-lang/rust-clippy/pull/14886)
+* [`useless_conversion`] fixed FP when using `.into_iter().any()`
+  [#14800](https://github.com/rust-lang/rust-clippy/pull/14800)
+* [`collapsible_if`] fixed FP on block stmt before expr
+  [#14730](https://github.com/rust-lang/rust-clippy/pull/14730)
+* [`manual_unwrap_or_default`] fixed FP on ref binding
+  [#14731](https://github.com/rust-lang/rust-clippy/pull/14731)
+* [`unused_async`] fixed FP on default impl
+  [#14720](https://github.com/rust-lang/rust-clippy/pull/14720)
+* [`manual_slice_fill`] fixed FP on `IndexMut` overload
+  [#14719](https://github.com/rust-lang/rust-clippy/pull/14719)
+* [`unnecessary_to_owned`] fixed FP when map key is a reference
+  [#14834](https://github.com/rust-lang/rust-clippy/pull/14834)
+
+### ICE Fixes
+
+* [`mutable_key_type`] fixed ICE when infinitely associated generic types are used
+  [#14965](https://github.com/rust-lang/rust-clippy/pull/14965)
+* [`zero_sized_map_values`] fixed ICE while computing type layout
+  [#14837](https://github.com/rust-lang/rust-clippy/pull/14837)
+* [`useless_asref`] fixed ICE on trait method
+  [#14830](https://github.com/rust-lang/rust-clippy/pull/14830)
+* [`manual_slice_size_calculation`] fixed ICE in suggestion and triggers in `const` context
+  [#14804](https://github.com/rust-lang/rust-clippy/pull/14804)
+* [`missing_const_for_fn`]: fix ICE with some compilation options
+  [#14776](https://github.com/rust-lang/rust-clippy/pull/14776)
+
+### Documentation Improvements
+
+* [`manual_contains`] improved documentation wording
+  [#14917](https://github.com/rust-lang/rust-clippy/pull/14917)
+
+### Performance improvements
+
+* [`strlen_on_c_strings`] optimized by 99.75% (31M → 76k instructions)
+  [#15043](https://github.com/rust-lang/rust-clippy/pull/15043)
+* Reduced documentation lints execution time by 85% (7.5% → 1% of total runtime)
+  [#14870](https://github.com/rust-lang/rust-clippy/pull/14870)
+* [`unit_return_expecting_ord`] optimized to reduce binder instantiation from 95k to 10k calls
+  [#14905](https://github.com/rust-lang/rust-clippy/pull/14905)
+* [`doc_markdown`] optimized by 50%
+  [#14693](https://github.com/rust-lang/rust-clippy/pull/14693)
+* Refactor and speed up `cargo dev fmt`
+  [#14638](https://github.com/rust-lang/rust-clippy/pull/14638)
 
 ## Rust 1.88
 

clippy_lints/src/casts/mod.rs

@@ -807,7 +807,7 @@ declare_clippy_lint! {
     /// ```no_run
     /// let _ = u16::MAX as usize;
     /// ```
-    #[clippy::version = "1.86.0"]
+    #[clippy::version = "1.89.0"]
     pub CONFUSING_METHOD_TO_NUMERIC_CAST,
     suspicious,
     "casting a primitive method pointer to any integer type"

clippy_lints/src/cloned_ref_to_slice_refs.rs

@@ -37,7 +37,7 @@ declare_clippy_lint! {
     /// let data_ref = &data;
     /// take_slice(slice::from_ref(data_ref));
     /// ```
-    #[clippy::version = "1.87.0"]
+    #[clippy::version = "1.89.0"]
     pub CLONED_REF_TO_SLICE_REFS,
     perf,
     "cloning a reference for slice references"

clippy_lints/src/coerce_container_to_any.rs

@@ -41,7 +41,7 @@ declare_clippy_lint! {
     /// // Succeeds since we have a &dyn Any to the inner u32!
     /// assert_eq!(dyn_any_of_u32.downcast_ref::<u32>(), Some(&0u32));
     /// ```
-    #[clippy::version = "1.88.0"]
+    #[clippy::version = "1.89.0"]
     pub COERCE_CONTAINER_TO_ANY,
     nursery,
     "coercing to `&dyn Any` when dereferencing could produce a `dyn Any` without coercion is usually not intended"

clippy_lints/src/doc/mod.rs

@@ -662,7 +662,7 @@ declare_clippy_lint! {
     /// /// [^1]: defined here
     /// fn my_fn() {}
     /// ```
-    #[clippy::version = "1.88.0"]
+    #[clippy::version = "1.89.0"]
     pub DOC_SUSPICIOUS_FOOTNOTES,
     suspicious,
     "looks like a link or footnote ref, but with no definition"

clippy_lints/src/format_args.rs

@@ -222,7 +222,7 @@ declare_clippy_lint! {
     /// ```
     ///
     /// [pointer format]: https://doc.rust-lang.org/std/fmt/index.html#formatting-traits
-    #[clippy::version = "1.88.0"]
+    #[clippy::version = "1.89.0"]
     pub POINTER_FORMAT,
     restriction,
     "formatting a pointer"

clippy_lints/src/infallible_try_from.rs

@@ -35,7 +35,7 @@ declare_clippy_lint! {
     ///     }
     /// }
     /// ```
-    #[clippy::version = "1.88.0"]
+    #[clippy::version = "1.89.0"]
     pub INFALLIBLE_TRY_FROM,
     suspicious,
     "TryFrom with infallible Error type"