Rust checker reference

Native Rust checkers

Checker name Category Description Default severity Enabled by default?
RS.DBZ.CONST.CALL Invalid Arithmetic Operations The value '0' is passed to function that can use this value as divisor 1 True
RS.DBZ.GENERAL Invalid Arithmetic Operations Division by zero might occur 1 True
RS.DBZ.GENERAL.FLOAT Invalid Arithmetic Operations Division by floating-point zero might occur 1 True
RS.DBZ.ITERATOR Invalid Arithmetic Operations Division by zero might occur in a loop iterator 1 True
RS.DBZ.ITERATOR.FLOAT Invalid Arithmetic Operations Division by zero might occur in a loop iterator 1 True
RS.DBZ.PANIC.UNCONDITIONAL Invalid Arithmetic Operations Unconditional division by zero 1 True
RS.NPD.CHECK.CALL.MIGHT Null Pointer Dereference Pointer may be passed to function that can dereference it after it was positively checked for null 2 True
RS.NPD.CHECK.CALL.MUST Null Pointer Dereference Pointer will be passed to function that may dereference it after it was positively checked for null 1 True
RS.NPD.CHECK.MIGHT Null Pointer Dereference Null pointer checked might be dereferenced 2 True
RS.NPD.CHECK.MUST Null Pointer Dereference Null pointer checked will be dereferenced 1 True
RS.NPD.CONST.CALL Null Pointer Dereference Constant null pointer is passed to function that can dereference it 1 True
RS.NPD.CONST.DEREF Null Pointer Dereference Constant null pointer dereferenced 1 True
RS.NPD.FUNC.CALL.MIGHT Null Pointer Dereference Result of function that may return null pointer may be passed to another function that may dereference it 2 True
RS.NPD.FUNC.CALL.MUST Null Pointer Dereference Result of function that may return null will be passed to another function that may dereference it 1 True
RS.NPD.FUNC.MIGHT Null Pointer Dereference Null pointer from function might be dereferenced 2 True
RS.NPD.FUNC.MUST Null Pointer Dereference Null pointer from function will be dereferenced 1 True
RS.NPD.GEN.CALL.MIGHT Null Pointer Dereference Null pointer might be passed to function and dereferenced 2 True
RS.NPD.GEN.CALL.MUST Null Pointer Dereference Null pointer will be passed to function that may dereference it 1 True
RS.NPD.GEN.MIGHT Null Pointer Dereference Null pointer might be dereferenced 2 True
RS.NPD.GEN.MUST Null Pointer Dereference Null pointer will be dereferenced 1 True

Clippy-based checkers

Checker name Category Description Default severity Enabled by default?
RS.CLIPPY.ABSOLUTE_PATHS Rust Clippy Lints checks for usage of an item without a `use` statement 3 False
RS.CLIPPY.ABSURD_EXTREME_COMPARISONS Rust Clippy Lints a comparison with a maximum or minimum value that is always true or false 3 False
RS.CLIPPY.ALLOC_INSTEAD_OF_CORE Rust Clippy Lints type is imported from alloc when available in core 3 False
RS.CLIPPY.ALLOW_ATTRIBUTES Rust Clippy Lints `#[allow]` will not trigger if a warning isn't found. `#[expect]` triggers if there are no warnings. 3 False
RS.CLIPPY.ALLOW_ATTRIBUTES_WITHOUT_REASON Rust Clippy Lints ensures that all `allow` and `expect` attributes have a reason 3 False
RS.CLIPPY.ALMOST_COMPLETE_RANGE Rust Clippy Lints almost complete range 3 False
RS.CLIPPY.ALMOST_SWAPPED Rust Clippy Lints `foo = bar; bar = foo` sequence 3 False
RS.CLIPPY.APPROX_CONSTANT Rust Clippy Lints the approximate of a known float constant (in `std::fXX::consts`) 3 False
RS.CLIPPY.ARBITRARY_SOURCE_ITEM_ORDERING Rust Clippy Lints arbitrary source item ordering 3 False
RS.CLIPPY.ARC_WITH_NON_SEND_SYNC Rust Clippy Lints using `Arc` with a type that does not implement `Send` and `Sync` 3 False
RS.CLIPPY.ARITHMETIC_SIDE_EFFECTS Rust Clippy Lints any arithmetic expression that can cause side effects like overflows or panics 3 False
RS.CLIPPY.ASSERTIONS_ON_CONSTANTS Rust Clippy Lints `assert!(true)` / `assert!(false)` will be optimized out by the compiler, and should probably be replaced by a `panic!()` or `unreachable!()` 3 False
RS.CLIPPY.ASSERTIONS_ON_RESULT_STATES Rust Clippy Lints `assert!(r.is_ok())` or `assert!(r.is_err())` gives worse panic messages than directly calling `r.unwrap()` or `r.unwrap_err()` 3 False
RS.CLIPPY.ASSIGNING_CLONES Rust Clippy Lints assigning the result of cloning may be inefficient 3 False
RS.CLIPPY.ASSIGN_OP_PATTERN Rust Clippy Lints assigning the result of an operation on a variable to that same variable 3 False
RS.CLIPPY.ASYNC_YIELDS_ASYNC Rust Clippy Lints async blocks that return a type that can be awaited 3 False
RS.CLIPPY.AS_CONVERSIONS Rust Clippy Lints using a potentially dangerous silent `as` conversion 3 False
RS.CLIPPY.AS_POINTER_UNDERSCORE Rust Clippy Lints detects `as *mut _` and `as *const _` conversion 3 False
RS.CLIPPY.AS_PTR_CAST_MUT Rust Clippy Lints casting the result of the `&self`-taking `as_ptr` to a mutable pointer 3 False
RS.CLIPPY.AS_UNDERSCORE Rust Clippy Lints detects `as _` conversion 3 False
RS.CLIPPY.AWAIT_HOLDING_INVALID_TYPE Rust Clippy Lints holding a type across an await point which is not allowed to be held as per the configuration 3 False
RS.CLIPPY.AWAIT_HOLDING_LOCK Rust Clippy Lints inside an async function, holding a `MutexGuard` while calling `await` 3 False
RS.CLIPPY.AWAIT_HOLDING_REFCELL_REF Rust Clippy Lints inside an async function, holding a `RefCell` ref while calling `await` 3 False
RS.CLIPPY.BAD_BIT_MASK Rust Clippy Lints expressions of the form `_ & mask == select` that will only ever return `true` or `false` 3 False
RS.CLIPPY.BIG_ENDIAN_BYTES Rust Clippy Lints disallows usage of the `to_be_bytes` method 3 False
RS.CLIPPY.BIND_INSTEAD_OF_MAP Rust Clippy Lints using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)` 3 False
RS.CLIPPY.BLANKET_CLIPPY_RESTRICTION_LINTS Rust Clippy Lints enabling the complete restriction group 3 False
RS.CLIPPY.BLOCKS_IN_CONDITIONS Rust Clippy Lints useless or complex blocks that can be eliminated in conditions 3 False
RS.CLIPPY.BOOL_ASSERT_COMPARISON Rust Clippy Lints Using a boolean as comparison value in an assert_* macro when there is no need 3 False
RS.CLIPPY.BOOL_COMPARISON Rust Clippy Lints comparing a variable to a boolean, e.g., `if x == true` or `if x != true` 3 False
RS.CLIPPY.BOOL_TO_INT_WITH_IF Rust Clippy Lints using if to convert bool to int 3 False
RS.CLIPPY.BORROWED_BOX Rust Clippy Lints a borrow of a boxed type 3 False
RS.CLIPPY.BORROW_AS_PTR Rust Clippy Lints borrowing just to cast to a raw pointer 3 False
RS.CLIPPY.BORROW_DEREF_REF Rust Clippy Lints deref on an immutable reference returns the same type as itself 3 False
RS.CLIPPY.BORROW_INTERIOR_MUTABLE_CONST Rust Clippy Lints referencing `const` with interior mutability 3 False
RS.CLIPPY.BOXED_LOCAL Rust Clippy Lints using `Box<T>` where unnecessary 3 False
RS.CLIPPY.BOX_COLLECTION Rust Clippy Lints usage of `Box<Vec<T>>`, vector elements are already on the heap 3 False
RS.CLIPPY.BOX_DEFAULT Rust Clippy Lints Using Box::new(T::default()) instead of Box::default() 3 False
RS.CLIPPY.BRANCHES_SHARING_CODE Rust Clippy Lints `if` statement with shared code in all blocks 3 False
RS.CLIPPY.BUILTIN_TYPE_SHADOW Rust Clippy Lints shadowing a builtin type 3 False
RS.CLIPPY.BYTES_COUNT_TO_LEN Rust Clippy Lints Using `bytes().count()` when `len()` performs the same functionality 3 False
RS.CLIPPY.BYTES_NTH Rust Clippy Lints replace `.bytes().nth()` with `.as_bytes().get()` 3 False
RS.CLIPPY.BYTE_CHAR_SLICES Rust Clippy Lints hard to read byte char slice 3 False
RS.CLIPPY.CARGO_COMMON_METADATA Rust Clippy Lints common metadata is defined in `Cargo.toml` 3 False
RS.CLIPPY.CASE_SENSITIVE_FILE_EXTENSION_COMPARISONS Rust Clippy Lints Checks for calls to ends_with with case-sensitive file extensions 3 False
RS.CLIPPY.CAST_ABS_TO_UNSIGNED Rust Clippy Lints casting the result of `abs()` to an unsigned integer can panic 3 False
RS.CLIPPY.CAST_ENUM_CONSTRUCTOR Rust Clippy Lints casts from an enum tuple constructor to an integer 3 False
RS.CLIPPY.CAST_ENUM_TRUNCATION Rust Clippy Lints casts from an enum type to an integral type that will truncate the value 3 False
RS.CLIPPY.CAST_LOSSLESS Rust Clippy Lints casts using `as` that are known to be lossless, e.g., `x as u64` where `x: u8` 3 False
RS.CLIPPY.CAST_NAN_TO_INT Rust Clippy Lints casting a known floating-point NaN into an integer 3 False
RS.CLIPPY.CAST_POSSIBLE_TRUNCATION Rust Clippy Lints casts that may cause truncation of the value, e.g., `x as u8` where `x: u32`, or `x as i32` where `x: f32` 3 False
RS.CLIPPY.CAST_POSSIBLE_WRAP Rust Clippy Lints casts that may cause wrapping around the value, e.g., `x as i32` where `x: u32` and `x > i32::MAX` 3 False
RS.CLIPPY.CAST_PRECISION_LOSS Rust Clippy Lints casts that cause loss of precision, e.g., `x as f32` where `x: u64` 3 False
RS.CLIPPY.CAST_PTR_ALIGNMENT Rust Clippy Lints cast from a pointer to a more strictly aligned pointer 3 False
RS.CLIPPY.CAST_SIGN_LOSS Rust Clippy Lints casts from signed types to unsigned types, e.g., `x as u32` where `x: i32` 3 False
RS.CLIPPY.CAST_SLICE_DIFFERENT_SIZES Rust Clippy Lints casting using `as` between raw pointers to slices of types with different sizes 3 False
RS.CLIPPY.CAST_SLICE_FROM_RAW_PARTS Rust Clippy Lints casting a slice created from a pointer and length to a slice pointer 3 False
RS.CLIPPY.CFG_NOT_TEST Rust Clippy Lints enforce against excluding code from test builds 3 False
RS.CLIPPY.CHARS_LAST_CMP Rust Clippy Lints using `.chars().last()` or `.chars().next_back()` to check if a string ends with a char 3 False
RS.CLIPPY.CHARS_NEXT_CMP Rust Clippy Lints using `.chars().next()` to check if a string starts with a char 3 False
RS.CLIPPY.CHAR_INDICES_AS_BYTE_INDICES Rust Clippy Lints using the character position yielded by `.chars().enumerate()` in a context where a byte index is expected 3 False
RS.CLIPPY.CHAR_LIT_AS_U8 Rust Clippy Lints casting a character literal to `u8` truncates 3 False
RS.CLIPPY.CHECKED_CONVERSIONS Rust Clippy Lints `try_from` could replace manual bounds checking when casting 3 False
RS.CLIPPY.CLEAR_WITH_DRAIN Rust Clippy Lints calling `drain` in order to `clear` a container 3 False
RS.CLIPPY.CLONED_INSTEAD_OF_COPIED Rust Clippy Lints used `cloned` where `copied` could be used instead 3 False
RS.CLIPPY.CLONED_REF_TO_SLICE_REFS Rust Clippy Lints cloning a reference for slice references 3 False
RS.CLIPPY.CLONE_ON_COPY Rust Clippy Lints using `clone` on a `Copy` type 3 False
RS.CLIPPY.CLONE_ON_REF_PTR Rust Clippy Lints using `clone` on a ref-counted pointer 3 False
RS.CLIPPY.CMP_NULL Rust Clippy Lints comparing a pointer to a null pointer, suggesting to use `.is_null()` instead 3 False
RS.CLIPPY.CMP_OWNED Rust Clippy Lints creating owned instances for comparing with others, e.g., `x == \"foo\".to_string()` 3 False
RS.CLIPPY.COERCE_CONTAINER_TO_ANY Rust Clippy Lints coercing to `&dyn Any` when dereferencing could produce a `dyn Any` without coercion is usually not intended 3 False
RS.CLIPPY.COGNITIVE_COMPLEXITY Rust Clippy Lints @eval_always = true 3 False
RS.CLIPPY.COLLAPSIBLE_ELSE_IF Rust Clippy Lints nested `else`-`if` expressions that can be collapsed (e.g., `else { if x { ... } }`) 3 False
RS.CLIPPY.COLLAPSIBLE_IF Rust Clippy Lints nested `if`s that can be collapsed (e.g., `if x { if y { ... } }` 3 False
RS.CLIPPY.COLLAPSIBLE_MATCH Rust Clippy Lints Nested `match` or `if let` expressions where the patterns may be \"collapsed\" together. 3 False
RS.CLIPPY.COLLAPSIBLE_STR_REPLACE Rust Clippy Lints collapse consecutive calls to str::replace (2 or more) into a single call 3 False
RS.CLIPPY.COLLECTION_IS_NEVER_READ Rust Clippy Lints a collection is never queried 3 False
RS.CLIPPY.COMPARISON_CHAIN Rust Clippy Lints `if`s that can be rewritten with `match` and `cmp` 3 False
RS.CLIPPY.COMPARISON_TO_EMPTY Rust Clippy Lints checking `x == \"\"` or `x == []` (or similar) when `.is_empty()` could be used instead 3 False
RS.CLIPPY.CONFUSING_METHOD_TO_NUMERIC_CAST Rust Clippy Lints casting a primitive method pointer to any integer type 3 False
RS.CLIPPY.CONST_IS_EMPTY Rust Clippy Lints is_empty() called on strings known at compile time 3 False
RS.CLIPPY.COPY_ITERATOR Rust Clippy Lints implementing `Iterator` on a `Copy` type 3 False
RS.CLIPPY.CRATE_IN_MACRO_DEF Rust Clippy Lints using `crate` in a macro definition 3 False
RS.CLIPPY.CREATE_DIR Rust Clippy Lints calling `std::fs::create_dir` instead of `std::fs::create_dir_all` 3 False
RS.CLIPPY.CROSSPOINTER_TRANSMUTE Rust Clippy Lints transmutes that have to or from types that are a pointer to the other 3 False
RS.CLIPPY.DBG_MACRO Rust Clippy Lints `dbg!` macro is intended as a debugging tool 3 False
RS.CLIPPY.DEBUG_ASSERT_WITH_MUT_CALL Rust Clippy Lints mutable arguments in `debug_assert{,_ne,_eq}!` 3 False
RS.CLIPPY.DECIMAL_LITERAL_REPRESENTATION Rust Clippy Lints using decimal representation when hexadecimal would be better 3 False
RS.CLIPPY.DECLARE_INTERIOR_MUTABLE_CONST Rust Clippy Lints declaring `const` with interior mutability 3 False
RS.CLIPPY.DEFAULT_CONSTRUCTED_UNIT_STRUCTS Rust Clippy Lints unit structs can be constructed without calling `default` 3 False
RS.CLIPPY.DEFAULT_INSTEAD_OF_ITER_EMPTY Rust Clippy Lints check `std::iter::Empty::default()` and replace with `std::iter::empty()` 3 False
RS.CLIPPY.DEFAULT_NUMERIC_FALLBACK Rust Clippy Lints usage of unconstrained numeric literals which may cause default numeric fallback. 3 False
RS.CLIPPY.DEFAULT_TRAIT_ACCESS Rust Clippy Lints checks for literal calls to `Default::default()` 3 False
RS.CLIPPY.DEFAULT_UNION_REPRESENTATION Rust Clippy Lints unions without a `#[repr(C)]` attribute 3 False
RS.CLIPPY.DEPRECATED_CFG_ATTR Rust Clippy Lints usage of `cfg_attr(rustfmt)` instead of tool attributes 3 False
RS.CLIPPY.DEPRECATED_CLIPPY_CFG_ATTR Rust Clippy Lints usage of `cfg(feature = \"cargo-clippy\")` instead of `cfg(clippy)` 3 False
RS.CLIPPY.DEPRECATED_SEMVER Rust Clippy Lints use of `#[deprecated(since = \"x\")]` where x is not semver 3 False
RS.CLIPPY.DEREF_ADDROF Rust Clippy Lints use of `*&` or `*&mut` in an expression 3 False
RS.CLIPPY.DEREF_BY_SLICING Rust Clippy Lints slicing instead of dereferencing 3 False
RS.CLIPPY.DERIVABLE_IMPLS Rust Clippy Lints manual implementation of the `Default` trait which is equal to a derive 3 False
RS.CLIPPY.DERIVED_HASH_WITH_MANUAL_EQ Rust Clippy Lints deriving `Hash` but implementing `PartialEq` explicitly 3 False
RS.CLIPPY.DERIVE_ORD_XOR_PARTIAL_ORD Rust Clippy Lints deriving `Ord` but implementing `PartialOrd` explicitly 3 False
RS.CLIPPY.DERIVE_PARTIAL_EQ_WITHOUT_EQ Rust Clippy Lints deriving `PartialEq` on a type that can implement `Eq`, without implementing `Eq` 3 False
RS.CLIPPY.DISALLOWED_MACROS Rust Clippy Lints use of a disallowed macro 3 False
RS.CLIPPY.DISALLOWED_METHODS Rust Clippy Lints use of a disallowed method call 3 False
RS.CLIPPY.DISALLOWED_NAMES Rust Clippy Lints usage of a disallowed/placeholder name 3 False
RS.CLIPPY.DISALLOWED_SCRIPT_IDENTS Rust Clippy Lints usage of non-allowed Unicode scripts 3 False
RS.CLIPPY.DISALLOWED_TYPES Rust Clippy Lints use of disallowed types 3 False
RS.CLIPPY.DIVERGING_SUB_EXPRESSION Rust Clippy Lints whether an expression contains a diverging sub expression 3 False
RS.CLIPPY.DOC_COMMENT_DOUBLE_SPACE_LINEBREAKS Rust Clippy Lints double-space used for doc comment linebreak instead of `\\` 3 False
RS.CLIPPY.DOC_INCLUDE_WITHOUT_CFG Rust Clippy Lints check if files included in documentation are behind `cfg(doc)` 3 False
RS.CLIPPY.DOC_LAZY_CONTINUATION Rust Clippy Lints require every line of a paragraph to be indented and marked 3 False
RS.CLIPPY.DOC_LINK_CODE Rust Clippy Lints link with code back-to-back with other code 3 False
RS.CLIPPY.DOC_LINK_WITH_QUOTES Rust Clippy Lints possible typo for an intra-doc link 3 False
RS.CLIPPY.DOC_MARKDOWN Rust Clippy Lints presence of `_`, `::` or camel-case outside backticks in documentation 3 False
RS.CLIPPY.DOC_NESTED_REFDEFS Rust Clippy Lints link reference defined in list item or quote 3 False
RS.CLIPPY.DOC_OVERINDENTED_LIST_ITEMS Rust Clippy Lints ensure list items are not overindented 3 False
RS.CLIPPY.DOC_SUSPICIOUS_FOOTNOTES Rust Clippy Lints looks like a link or footnote ref, but with no definition 3 False
RS.CLIPPY.DOUBLE_COMPARISONS Rust Clippy Lints unnecessary double comparisons that can be simplified 3 False
RS.CLIPPY.DOUBLE_ENDED_ITERATOR_LAST Rust Clippy Lints using `Iterator::last` on a `DoubleEndedIterator` 3 False
RS.CLIPPY.DOUBLE_MUST_USE Rust Clippy Lints `#[must_use]` attribute on a `#[must_use]`-returning function / method 3 False
RS.CLIPPY.DOUBLE_PARENS Rust Clippy Lints Warn on unnecessary double parentheses 3 False
RS.CLIPPY.DRAIN_COLLECT Rust Clippy Lints calling `.drain(..).collect()` to move all elements into a new collection 3 False
RS.CLIPPY.DROP_NON_DROP Rust Clippy Lints call to `std::mem::drop` with a value which does not implement `Drop` 3 False
RS.CLIPPY.DUPLICATED_ATTRIBUTES Rust Clippy Lints duplicated attribute 3 False
RS.CLIPPY.DUPLICATE_MOD Rust Clippy Lints file loaded as module multiple times 3 False
RS.CLIPPY.DUPLICATE_UNDERSCORE_ARGUMENT Rust Clippy Lints function arguments having names which only differ by an underscore 3 False
RS.CLIPPY.DURATION_SUBSEC Rust Clippy Lints checks for calculation of subsecond microseconds or milliseconds 3 False
RS.CLIPPY.EAGER_TRANSMUTE Rust Clippy Lints eager evaluation of `transmute` 3 False
RS.CLIPPY.ELIDABLE_LIFETIME_NAMES Rust Clippy Lints lifetime name that can be replaced with the anonymous lifetime 3 False
RS.CLIPPY.ELSE_IF_WITHOUT_ELSE Rust Clippy Lints `if` expression with an `else if`, but without a final `else` branch 3 False
RS.CLIPPY.EMPTY_DOCS Rust Clippy Lints docstrings exist but documentation is empty 3 False
RS.CLIPPY.EMPTY_DROP Rust Clippy Lints empty `Drop` implementations 3 False
RS.CLIPPY.EMPTY_ENUM Rust Clippy Lints enum with no variants 3 False
RS.CLIPPY.EMPTY_ENUM_VARIANTS_WITH_BRACKETS Rust Clippy Lints finds enum variants with empty brackets 3 False
RS.CLIPPY.EMPTY_LINE_AFTER_DOC_COMMENTS Rust Clippy Lints empty line after doc comments 3 False
RS.CLIPPY.EMPTY_LINE_AFTER_OUTER_ATTR Rust Clippy Lints empty line after outer attribute 3 False
RS.CLIPPY.EMPTY_LOOP Rust Clippy Lints empty `loop {}`, which should block or sleep 3 False
RS.CLIPPY.EMPTY_STRUCTS_WITH_BRACKETS Rust Clippy Lints finds struct declarations with empty brackets 3 False
RS.CLIPPY.ENUM_CLIKE_UNPORTABLE_VARIANT Rust Clippy Lints C-like enums that are `repr(isize/usize)` and have values that don't fit into an `i32` 3 False
RS.CLIPPY.ENUM_GLOB_USE Rust Clippy Lints use items that import all variants of an enum 3 False
RS.CLIPPY.ENUM_VARIANT_NAMES Rust Clippy Lints enums where all variants share a prefix/postfix 3 False
RS.CLIPPY.EQUATABLE_IF_LET Rust Clippy Lints using pattern matching instead of equality 3 False
RS.CLIPPY.EQ_OP Rust Clippy Lints equal operands on both sides of a comparison or bitwise combination (e.g., `x == x`) 3 False
RS.CLIPPY.ERASING_OP Rust Clippy Lints using erasing operations, e.g., `x * 0` or `y & 0` 3 False
RS.CLIPPY.ERROR_IMPL_ERROR Rust Clippy Lints exported types named `Error` that implement `Error` 3 False
RS.CLIPPY.ERR_EXPECT Rust Clippy Lints r#"using `.err().expect("")` when `.expect_err("")` can be used"# 3 False
RS.CLIPPY.EXCESSIVE_NESTING Rust Clippy Lints checks for blocks nested beyond a certain threshold 3 False
RS.CLIPPY.EXCESSIVE_PRECISION Rust Clippy Lints excessive precision for float literal 3 False
RS.CLIPPY.EXHAUSTIVE_ENUMS Rust Clippy Lints detects exported enums that have not been marked #[non_exhaustive] 3 False
RS.CLIPPY.EXHAUSTIVE_STRUCTS Rust Clippy Lints detects exported structs that have not been marked #[non_exhaustive] 3 False
RS.CLIPPY.EXIT Rust Clippy Lints detects `std::process::exit` calls 3 False
RS.CLIPPY.EXPECT_FUN_CALL Rust Clippy Lints using any `expect` method with a function call 3 False
RS.CLIPPY.EXPECT_USED Rust Clippy Lints using `.expect()` on `Result` or `Option`, which might be better handled 3 False
RS.CLIPPY.EXPLICIT_AUTO_DEREF Rust Clippy Lints dereferencing when the compiler would automatically dereference 3 False
RS.CLIPPY.EXPLICIT_COUNTER_LOOP Rust Clippy Lints for-looping with an explicit counter when `_.enumerate()` would do 3 False
RS.CLIPPY.EXPLICIT_DEREF_METHODS Rust Clippy Lints Explicit use of deref or deref_mut method while not in a method chain. 3 False
RS.CLIPPY.EXPLICIT_INTO_ITER_LOOP Rust Clippy Lints for-looping over `_.into_iter()` when `_` would do 3 False
RS.CLIPPY.EXPLICIT_ITER_LOOP Rust Clippy Lints for-looping over `_.iter()` or `_.iter_mut()` when `&_` or `&mut _` would do 3 False
RS.CLIPPY.EXPLICIT_WRITE Rust Clippy Lints using the `write!()` family of functions instead of the `print!()` family of functions, when using the latter would work 3 False
RS.CLIPPY.EXPL_IMPL_CLONE_ON_COPY Rust Clippy Lints implementing `Clone` explicitly on `Copy` types 3 False
RS.CLIPPY.EXTEND_WITH_DRAIN Rust Clippy Lints using vec.append(&mut vec) to move the full range of a vector to another 3 False
RS.CLIPPY.EXTRA_UNUSED_LIFETIMES Rust Clippy Lints unused lifetimes in function definitions 3 False
RS.CLIPPY.EXTRA_UNUSED_TYPE_PARAMETERS Rust Clippy Lints unused type parameters in function definitions 3 False
RS.CLIPPY.FALLIBLE_IMPL_FROM Rust Clippy Lints Warn on impls of `From<..>` that contain `panic!()` or `unwrap()` 3 False
RS.CLIPPY.FIELD_REASSIGN_WITH_DEFAULT Rust Clippy Lints binding initialized with Default should have its fields set in the initializer 3 False
RS.CLIPPY.FIELD_SCOPED_VISIBILITY_MODIFIERS Rust Clippy Lints checks for usage of a scoped visibility modifier, like `pub(crate)`, on fields 3 False
RS.CLIPPY.FILETYPE_IS_FILE Rust Clippy Lints `FileType::is_file` is not recommended to test for readable file type 3 False
RS.CLIPPY.FILTER_MAP_BOOL_THEN Rust Clippy Lints checks for usage of `bool::then` in `Iterator::filter_map` 3 False
RS.CLIPPY.FILTER_MAP_IDENTITY Rust Clippy Lints call to `filter_map` where `flatten` is sufficient 3 False
RS.CLIPPY.FILTER_MAP_NEXT Rust Clippy Lints using combination of `filter_map` and `next` which can usually be written as a single method call 3 False
RS.CLIPPY.FILTER_NEXT Rust Clippy Lints using `filter(p).next()`, which is more succinctly expressed as `.find(p)` 3 False
RS.CLIPPY.FLAT_MAP_IDENTITY Rust Clippy Lints call to `flat_map` where `flatten` is sufficient 3 False
RS.CLIPPY.FLAT_MAP_OPTION Rust Clippy Lints used `flat_map` where `filter_map` could be used instead 3 False
RS.CLIPPY.FLOAT_ARITHMETIC Rust Clippy Lints any floating-point arithmetic statement 3 False
RS.CLIPPY.FLOAT_CMP Rust Clippy Lints using `==` or `!=` on float values instead of comparing difference with an allowed error 3 False
RS.CLIPPY.FLOAT_CMP_CONST Rust Clippy Lints using `==` or `!=` on float constants instead of comparing difference with an allowed error 3 False
RS.CLIPPY.FLOAT_EQUALITY_WITHOUT_ABS Rust Clippy Lints float equality check without `.abs()` 3 False
RS.CLIPPY.FN_PARAMS_EXCESSIVE_BOOLS Rust Clippy Lints using too many bools in function parameters 3 False
RS.CLIPPY.FN_TO_NUMERIC_CAST Rust Clippy Lints casting a function pointer to a numeric type other than `usize` 3 False
RS.CLIPPY.FN_TO_NUMERIC_CAST_ANY Rust Clippy Lints casting a function pointer to any integer type 3 False
RS.CLIPPY.FN_TO_NUMERIC_CAST_WITH_TRUNCATION Rust Clippy Lints casting a function pointer to a numeric type not wide enough to store the address 3 False
RS.CLIPPY.FORGET_NON_DROP Rust Clippy Lints call to `std::mem::forget` with a value which does not implement `Drop` 3 False
RS.CLIPPY.FORMAT_COLLECT Rust Clippy Lints `format!`ing every element in a collection, then collecting the strings into a new `String` 3 False
RS.CLIPPY.FORMAT_IN_FORMAT_ARGS Rust Clippy Lints `format!` used in a macro that does formatting 3 False
RS.CLIPPY.FORMAT_PUSH_STRING Rust Clippy Lints `format!(..)` appended to existing `String` 3 False
RS.CLIPPY.FOR_KV_MAP Rust Clippy Lints looping on a map using `iter` when `keys` or `values` would do 3 False
RS.CLIPPY.FOUR_FORWARD_SLASHES Rust Clippy Lints comments with 4 forward slashes (`////`) likely intended to be doc comments (`///`) 3 False
RS.CLIPPY.FROM_ITER_INSTEAD_OF_COLLECT Rust Clippy Lints use `.collect()` instead of `::from_iter()` 3 False
RS.CLIPPY.FROM_OVER_INTO Rust Clippy Lints Warns on implementations of `Into<..>` to use `From<..>` 3 False
RS.CLIPPY.FROM_RAW_WITH_VOID_PTR Rust Clippy Lints creating a `Box` from a void raw pointer 3 False
RS.CLIPPY.FROM_STR_RADIX_10 Rust Clippy Lints from_str_radix with radix 10 3 False
RS.CLIPPY.FUTURE_NOT_SEND Rust Clippy Lints public Futures must be Send 3 False
RS.CLIPPY.GET_FIRST Rust Clippy Lints Using `x.get(0)` when `x.first()` or `x.front()` is simpler 3 False
RS.CLIPPY.GET_LAST_WITH_LEN Rust Clippy Lints Using `x.get(x.len() - 1)` when `x.last()` is correct and simpler 3 False
RS.CLIPPY.GET_UNWRAP Rust Clippy Lints using `.get().unwrap()` or `.get_mut().unwrap()` when using `[]` would work instead 3 False
RS.CLIPPY.HOST_ENDIAN_BYTES Rust Clippy Lints disallows usage of the `to_ne_bytes` method 3 False
RS.CLIPPY.IDENTITY_OP Rust Clippy Lints using identity operations, e.g., `x + 0` or `y / 1` 3 False
RS.CLIPPY.IFS_SAME_COND Rust Clippy Lints consecutive `if`s with the same condition 3 False
RS.CLIPPY.IF_LET_MUTEX Rust Clippy Lints locking a `Mutex` in an `if let` block can cause deadlocks 3 False
RS.CLIPPY.IF_NOT_ELSE Rust Clippy Lints `if` branches that could be swapped so no negation operation is necessary on the condition 3 False
RS.CLIPPY.IF_SAME_THEN_ELSE Rust Clippy Lints `if` with the same `then` and `else` blocks 3 False
RS.CLIPPY.IF_THEN_SOME_ELSE_NONE Rust Clippy Lints Finds if-else that could be written using either `bool::then` or `bool::then_some` 3 False
RS.CLIPPY.IGNORED_UNIT_PATTERNS Rust Clippy Lints suggest replacing `_` by `()` in patterns where appropriate 3 False
RS.CLIPPY.IGNORE_WITHOUT_REASON Rust Clippy Lints ignored tests without messages 3 False
RS.CLIPPY.IMPLICIT_CLONE Rust Clippy Lints implicitly cloning a value by invoking a function on its dereferenced type 3 False
RS.CLIPPY.IMPLICIT_HASHER Rust Clippy Lints missing generalization over different hashers 3 False
RS.CLIPPY.IMPLICIT_RETURN Rust Clippy Lints use a return statement like `return expr` instead of an expression 3 False
RS.CLIPPY.IMPLICIT_SATURATING_ADD Rust Clippy Lints Perform saturating addition instead of implicitly checking max bound of data type 3 False
RS.CLIPPY.IMPLICIT_SATURATING_SUB Rust Clippy Lints Perform saturating subtraction instead of implicitly checking lower bound of data type 3 False
RS.CLIPPY.IMPLIED_BOUNDS_IN_IMPLS Rust Clippy Lints specifying bounds that are implied by other bounds in `impl Trait` type 3 False
RS.CLIPPY.IMPL_HASH_BORROW_WITH_STR_AND_BYTES Rust Clippy Lints ensures that the semantics of `Borrow` for `Hash` are satisfied when `Borrow<str>` and `Borrow<[u8]>` are implemented 3 False
RS.CLIPPY.IMPL_TRAIT_IN_PARAMS Rust Clippy Lints `impl Trait` is used in the function's parameters 3 False
RS.CLIPPY.IMPOSSIBLE_COMPARISONS Rust Clippy Lints double comparisons that will never evaluate to `true` 3 False
RS.CLIPPY.IMPRECISE_FLOPS Rust Clippy Lints usage of imprecise floating point operations 3 False
RS.CLIPPY.INCOMPATIBLE_MSRV Rust Clippy Lints ensures that all items used in the crate are available for the current MSRV 3 False
RS.CLIPPY.INCONSISTENT_DIGIT_GROUPING Rust Clippy Lints integer literals with digits grouped inconsistently 3 False
RS.CLIPPY.INCONSISTENT_STRUCT_CONSTRUCTOR Rust Clippy Lints the order of the field init is inconsistent with the order in the struct definition 3 False
RS.CLIPPY.INDEXING_SLICING Rust Clippy Lints indexing/slicing usage 3 False
RS.CLIPPY.INDEX_REFUTABLE_SLICE Rust Clippy Lints avoid indexing on slices which could be destructed 3 False
RS.CLIPPY.INEFFECTIVE_BIT_MASK Rust Clippy Lints expressions where a bit mask will be rendered useless by a comparison, e.g., `(x | 1) > 2` 3 False
RS.CLIPPY.INEFFECTIVE_OPEN_OPTIONS Rust Clippy Lints usage of both `write(true)` and `append(true)` on same `OpenOptions` 3 False
RS.CLIPPY.INEFFICIENT_TO_STRING Rust Clippy Lints using `to_string` on `&&T` where `T: ToString` 3 False
RS.CLIPPY.INFALLIBLE_DESTRUCTURING_MATCH Rust Clippy Lints a `match` statement with a single infallible arm instead of a `let` 3 False
RS.CLIPPY.INFALLIBLE_TRY_FROM Rust Clippy Lints TryFrom with infallible Error type 3 False
RS.CLIPPY.INFINITE_ITER Rust Clippy Lints infinite iteration 3 False
RS.CLIPPY.INFINITE_LOOP Rust Clippy Lints possibly unintended infinite loop 3 False
RS.CLIPPY.INHERENT_TO_STRING Rust Clippy Lints type implements inherent method `to_string()`, but should instead implement the `Display` trait 3 False
RS.CLIPPY.INHERENT_TO_STRING_SHADOW_DISPLAY Rust Clippy Lints type implements inherent method `to_string()`, which gets shadowed by the implementation of the `Display` trait 3 False
RS.CLIPPY.INIT_NUMBERED_FIELDS Rust Clippy Lints numbered fields in tuple struct initializer 3 False
RS.CLIPPY.INLINE_ALWAYS Rust Clippy Lints use of `#[inline(always)]` 3 False
RS.CLIPPY.INLINE_ASM_X86_ATT_SYNTAX Rust Clippy Lints prefer Intel x86 assembly syntax 3 False
RS.CLIPPY.INLINE_ASM_X86_INTEL_SYNTAX Rust Clippy Lints prefer AT&T x86 assembly syntax 3 False
RS.CLIPPY.INLINE_FN_WITHOUT_BODY Rust Clippy Lints use of `#[inline]` on trait methods without bodies 3 False
RS.CLIPPY.INSPECT_FOR_EACH Rust Clippy Lints using `.inspect().for_each()`, which can be replaced with `.for_each()` 3 False
RS.CLIPPY.INTEGER_DIVISION Rust Clippy Lints integer division may cause loss of precision 3 False
RS.CLIPPY.INTEGER_DIVISION_REMAINDER_USED Rust Clippy Lints use of disallowed default division and remainder operations 3 False
RS.CLIPPY.INTO_ITER_ON_REF Rust Clippy Lints using `.into_iter()` on a reference 3 False
RS.CLIPPY.INTO_ITER_WITHOUT_ITER Rust Clippy Lints implementing `IntoIterator for (&|&mut) Type` without an inherent `iter(_mut)` method 3 False
RS.CLIPPY.INT_PLUS_ONE Rust Clippy Lints instead of using `x >= y + 1`, use `x > y` 3 False
RS.CLIPPY.INVALID_REGEX Rust Clippy Lints invalid regular expressions 3 False
RS.CLIPPY.INVALID_UPCAST_COMPARISONS Rust Clippy Lints a comparison involving an upcast which is always true or false 3 False
RS.CLIPPY.INVERTED_SATURATING_SUB Rust Clippy Lints Check if a variable is smaller than another one and still subtract from it even if smaller 3 False
RS.CLIPPY.INVISIBLE_CHARACTERS Rust Clippy Lints using an invisible character in a string literal, which is confusing 3 False
RS.CLIPPY.IO_OTHER_ERROR Rust Clippy Lints calling `std::io::Error::new(std::io::ErrorKind::Other, _)` 3 False
RS.CLIPPY.IP_CONSTANT Rust Clippy Lints hardcoded localhost IP address 3 False
RS.CLIPPY.IS_DIGIT_ASCII_RADIX Rust Clippy Lints use of `char::is_digit(..)` with literal radix of 10 or 16 3 False
RS.CLIPPY.ITEMS_AFTER_STATEMENTS Rust Clippy Lints blocks where an item comes after a statement 3 False
RS.CLIPPY.ITEMS_AFTER_TEST_MODULE Rust Clippy Lints An item was found after the testing module `tests` 3 False
RS.CLIPPY.ITERATOR_STEP_BY_ZERO Rust Clippy Lints using `Iterator::step_by(0)`, which will panic at runtime 3 False
RS.CLIPPY.ITER_CLONED_COLLECT Rust Clippy Lints using `.cloned().collect()` on slice to create a `Vec` 3 False
RS.CLIPPY.ITER_COUNT Rust Clippy Lints replace `.iter().count()` with `.len()` 3 False
RS.CLIPPY.ITER_FILTER_IS_OK Rust Clippy Lints filtering an iterator over `Result`s for `Ok` can be achieved with `flatten` 3 False
RS.CLIPPY.ITER_FILTER_IS_SOME Rust Clippy Lints filtering an iterator over `Option`s for `Some` can be achieved with `flatten` 3 False
RS.CLIPPY.ITER_KV_MAP Rust Clippy Lints iterating on map using `iter` when `keys` or `values` would do 3 False
RS.CLIPPY.ITER_NEXT_LOOP Rust Clippy Lints for-looping over `_.next()` which is probably not intended 3 False
RS.CLIPPY.ITER_NEXT_SLICE Rust Clippy Lints using `.iter().next()` on a sliced array, which can be shortened to just `.get()` 3 False
RS.CLIPPY.ITER_NOT_RETURNING_ITERATOR Rust Clippy Lints methods named `iter` or `iter_mut` that do not return an `Iterator` 3 False
RS.CLIPPY.ITER_NTH Rust Clippy Lints using `.iter().nth()` on a standard library type with O(1) element access 3 False
RS.CLIPPY.ITER_NTH_ZERO Rust Clippy Lints replace `iter.nth(0)` with `iter.next()` 3 False
RS.CLIPPY.ITER_ON_EMPTY_COLLECTIONS Rust Clippy Lints Iterator for empty array 3 False
RS.CLIPPY.ITER_ON_SINGLE_ITEMS Rust Clippy Lints Iterator for array of length 1 3 False
RS.CLIPPY.ITER_OUT_OF_BOUNDS Rust Clippy Lints calls to `.take()` or `.skip()` that are out of bounds 3 False
RS.CLIPPY.ITER_OVEREAGER_CLONED Rust Clippy Lints using `cloned()` early with `Iterator::iter()` can lead to some performance inefficiencies 3 False
RS.CLIPPY.ITER_OVER_HASH_TYPE Rust Clippy Lints iterating over unordered hash-based types (`HashMap` and `HashSet`) 3 False
RS.CLIPPY.ITER_SKIP_NEXT Rust Clippy Lints using `.skip(x).next()` on an iterator 3 False
RS.CLIPPY.ITER_SKIP_ZERO Rust Clippy Lints disallows `.skip(0)` 3 False
RS.CLIPPY.ITER_WITHOUT_INTO_ITER Rust Clippy Lints implementing `iter(_mut)` without an associated `IntoIterator for (&|&mut) Type` impl 3 False
RS.CLIPPY.ITER_WITH_DRAIN Rust Clippy Lints replace `.drain(..)` with `.into_iter()` 3 False
RS.CLIPPY.JOIN_ABSOLUTE_PATHS Rust Clippy Lints calls to `Path::join` which will overwrite the original path 3 False
RS.CLIPPY.JUST_UNDERSCORES_AND_DIGITS Rust Clippy Lints unclear name 3 False
RS.CLIPPY.LARGE_CONST_ARRAYS Rust Clippy Lints large non-scalar const array may cause performance overhead 3 False
RS.CLIPPY.LARGE_DIGIT_GROUPS Rust Clippy Lints grouping digits into groups that are too large 3 False
RS.CLIPPY.LARGE_ENUM_VARIANT Rust Clippy Lints large size difference between variants on an enum 3 False
RS.CLIPPY.LARGE_FUTURES Rust Clippy Lints large future may lead to unexpected stack overflows 3 False
RS.CLIPPY.LARGE_INCLUDE_FILE Rust Clippy Lints including a large file 3 False
RS.CLIPPY.LARGE_STACK_ARRAYS Rust Clippy Lints allocating large arrays on stack may cause stack overflow 3 False
RS.CLIPPY.LARGE_STACK_FRAMES Rust Clippy Lints checks for functions that allocate a lot of stack space 3 False
RS.CLIPPY.LARGE_TYPES_PASSED_BY_VALUE Rust Clippy Lints functions taking large arguments by value 3 False
RS.CLIPPY.LEGACY_NUMERIC_CONSTANTS Rust Clippy Lints checks for usage of legacy std numeric constants and methods 3 False
RS.CLIPPY.LEN_WITHOUT_IS_EMPTY Rust Clippy Lints traits or impls with a public `len` method but no corresponding `is_empty` method 3 False
RS.CLIPPY.LEN_ZERO Rust Clippy Lints checking `.len() == 0` or `.len() > 0` (or similar) when `.is_empty()` could be used instead 3 False
RS.CLIPPY.LET_AND_RETURN Rust Clippy Lints creating a let-binding and then immediately returning it like `let x = expr; x` at the end of a block 3 False
RS.CLIPPY.LET_UNDERSCORE_FUTURE Rust Clippy Lints non-binding `let` on a future 3 False
RS.CLIPPY.LET_UNDERSCORE_LOCK Rust Clippy Lints non-binding `let` on a synchronization lock 3 False
RS.CLIPPY.LET_UNDERSCORE_MUST_USE Rust Clippy Lints non-binding `let` on a `#[must_use]` expression 3 False
RS.CLIPPY.LET_UNDERSCORE_UNTYPED Rust Clippy Lints non-binding `let` without a type annotation 3 False
RS.CLIPPY.LET_UNIT_VALUE Rust Clippy Lints creating a `let` binding to a value of unit type, which usually can't be used afterwards 3 False
RS.CLIPPY.LET_WITH_TYPE_UNDERSCORE Rust Clippy Lints unneeded underscore type (`_`) in a variable declaration 3 False
RS.CLIPPY.LINES_FILTER_MAP_OK Rust Clippy Lints filtering `std::io::Lines` with `filter_map()`, `flat_map()`, or `flatten()` might cause an infinite loop 3 False
RS.CLIPPY.LINKEDLIST Rust Clippy Lints usage of LinkedList, usually a vector is faster, or a more specialized data structure like a `VecDeque` 3 False
RS.CLIPPY.LINT_GROUPS_PRIORITY Rust Clippy Lints a lint group in `Cargo.toml` at the same priority as a lint 3 False
RS.CLIPPY.LITERAL_STRING_WITH_FORMATTING_ARGS Rust Clippy Lints Checks if string literals have formatting arguments 3 False
RS.CLIPPY.LITTLE_ENDIAN_BYTES Rust Clippy Lints disallows usage of the `to_le_bytes` method 3 False
RS.CLIPPY.LOSSY_FLOAT_LITERAL Rust Clippy Lints lossy whole number float literals 3 False
RS.CLIPPY.MACRO_METAVARS_IN_UNSAFE Rust Clippy Lints expanding macro metavariables in an unsafe block 3 False
RS.CLIPPY.MACRO_USE_IMPORTS Rust Clippy Lints #[macro_use] is no longer needed 3 False
RS.CLIPPY.MAIN_RECURSION Rust Clippy Lints recursion using the entrypoint 3 False
RS.CLIPPY.MANUAL_ABS_DIFF Rust Clippy Lints using an if-else pattern instead of `abs_diff` 3 False
RS.CLIPPY.MANUAL_ASSERT Rust Clippy Lints `panic!` and only a `panic!` in `if`-then statement 3 False
RS.CLIPPY.MANUAL_ASYNC_FN Rust Clippy Lints manual implementations of `async` functions can be simplified using the dedicated syntax 3 False
RS.CLIPPY.MANUAL_BITS Rust Clippy Lints manual implementation of `size_of::<T>() * 8` can be simplified with `T::BITS` 3 False
RS.CLIPPY.MANUAL_CLAMP Rust Clippy Lints using a clamp pattern instead of the clamp function 3 False
RS.CLIPPY.MANUAL_CONTAINS Rust Clippy Lints unnecessary `iter().any()` on slices that can be replaced with `contains()` 3 False
RS.CLIPPY.MANUAL_C_STR_LITERALS Rust Clippy Lints r#"creating a `CStr` through functions when `c""` literals can be used"# 3 False
RS.CLIPPY.MANUAL_DANGLING_PTR Rust Clippy Lints casting small constant literals to pointers to create dangling pointers 3 False
RS.CLIPPY.MANUAL_DIV_CEIL Rust Clippy Lints manually reimplementing `div_ceil` 3 False
RS.CLIPPY.MANUAL_FILTER Rust Clippy Lints reimplementation of `filter` 3 False
RS.CLIPPY.MANUAL_FILTER_MAP Rust Clippy Lints using `_.filter(_).map(_)` in a way that can be written more simply as `filter_map(_)` 3 False
RS.CLIPPY.MANUAL_FIND Rust Clippy Lints manual implementation of `Iterator::find` 3 False
RS.CLIPPY.MANUAL_FIND_MAP Rust Clippy Lints using `_.find(_).map(_)` in a way that can be written more simply as `find_map(_)` 3 False
RS.CLIPPY.MANUAL_FLATTEN Rust Clippy Lints for loops over `Option`s or `Result`s with a single expression can be simplified 3 False
RS.CLIPPY.MANUAL_HASH_ONE Rust Clippy Lints manual implementations of `BuildHasher::hash_one` 3 False
RS.CLIPPY.MANUAL_IGNORE_CASE_CMP Rust Clippy Lints manual case-insensitive ASCII comparison 3 False
RS.CLIPPY.MANUAL_INSPECT Rust Clippy Lints use of `map` returning the original item 3 False
RS.CLIPPY.MANUAL_INSTANT_ELAPSED Rust Clippy Lints subtraction between `Instant::now()` and previous `Instant` 3 False
RS.CLIPPY.MANUAL_IS_ASCII_CHECK Rust Clippy Lints use dedicated method to check ascii range 3 False
RS.CLIPPY.MANUAL_IS_FINITE Rust Clippy Lints use dedicated method to check if a float is finite 3 False
RS.CLIPPY.MANUAL_IS_INFINITE Rust Clippy Lints use dedicated method to check if a float is infinite 3 False
RS.CLIPPY.MANUAL_IS_POWER_OF_TWO Rust Clippy Lints manually reimplementing `is_power_of_two` 3 False
RS.CLIPPY.MANUAL_IS_VARIANT_AND Rust Clippy Lints using `.map(f).unwrap_or_default()`, which is more succinctly expressed as `is_some_and(f)` or `is_ok_and(f)` 3 False
RS.CLIPPY.MANUAL_LET_ELSE Rust Clippy Lints manual implementation of a let...else statement 3 False
RS.CLIPPY.MANUAL_MAIN_SEPARATOR_STR Rust Clippy Lints `&std::path::MAIN_SEPARATOR.to_string()` can be replaced by `std::path::MAIN_SEPARATOR_STR` 3 False
RS.CLIPPY.MANUAL_MAP Rust Clippy Lints reimplementation of `map` 3 False
RS.CLIPPY.MANUAL_MEMCPY Rust Clippy Lints manually copying items between slices 3 False
RS.CLIPPY.MANUAL_MIDPOINT Rust Clippy Lints manual implementation of `midpoint` which can overflow 3 False
RS.CLIPPY.MANUAL_NEXT_BACK Rust Clippy Lints manual reverse iteration of `DoubleEndedIterator` 3 False
RS.CLIPPY.MANUAL_NON_EXHAUSTIVE Rust Clippy Lints manual implementations of the non-exhaustive pattern can be simplified using #[non_exhaustive] 3 False
RS.CLIPPY.MANUAL_OK_ERR Rust Clippy Lints find manual implementations of `.ok()` or `.err()` on `Result` 3 False
RS.CLIPPY.MANUAL_OK_OR Rust Clippy Lints finds patterns that can be encoded more concisely with `Option::ok_or` 3 False
RS.CLIPPY.MANUAL_OPTION_AS_SLICE Rust Clippy Lints manual `Option::as_slice` 3 False
RS.CLIPPY.MANUAL_PATTERN_CHAR_COMPARISON Rust Clippy Lints manual char comparison in string patterns 3 False
RS.CLIPPY.MANUAL_RANGE_CONTAINS Rust Clippy Lints manually reimplementing {`Range`, `RangeInclusive`}`::contains` 3 False
RS.CLIPPY.MANUAL_RANGE_PATTERNS Rust Clippy Lints manually writing range patterns using a combined OR pattern (`|`) 3 False
RS.CLIPPY.MANUAL_REM_EUCLID Rust Clippy Lints manually reimplementing `rem_euclid` 3 False
RS.CLIPPY.MANUAL_REPEAT_N Rust Clippy Lints detect `repeat().take()` that can be replaced with `repeat_n()` 3 False
RS.CLIPPY.MANUAL_RETAIN Rust Clippy Lints `retain()` is simpler and the same functionalities 3 False
RS.CLIPPY.MANUAL_ROTATE Rust Clippy Lints using bit shifts to rotate integers 3 False
RS.CLIPPY.MANUAL_SATURATING_ARITHMETIC Rust Clippy Lints `.checked_add/sub(x).unwrap_or(MAX/MIN)` 3 False
RS.CLIPPY.MANUAL_SLICE_FILL Rust Clippy Lints manually filling a slice with a value 3 False
RS.CLIPPY.MANUAL_SLICE_SIZE_CALCULATION Rust Clippy Lints manual slice size calculation 3 False
RS.CLIPPY.MANUAL_SPLIT_ONCE Rust Clippy Lints replace `.splitn(2, pat)` with `.split_once(pat)` 3 False
RS.CLIPPY.MANUAL_STRING_NEW Rust Clippy Lints empty String is being created manually 3 False
RS.CLIPPY.MANUAL_STRIP Rust Clippy Lints suggests using `strip_{prefix,suffix}` over `str::{starts,ends}_with` and slicing 3 False
RS.CLIPPY.MANUAL_STR_REPEAT Rust Clippy Lints manual implementation of `str::repeat` 3 False
RS.CLIPPY.MANUAL_SWAP Rust Clippy Lints manual swap of two variables 3 False
RS.CLIPPY.MANUAL_TRY_FOLD Rust Clippy Lints checks for usage of `Iterator::fold` with a type that implements `Try` 3 False
RS.CLIPPY.MANUAL_UNWRAP_OR Rust Clippy Lints finds patterns that can be encoded more concisely with `Option::unwrap_or` or `Result::unwrap_or` 3 False
RS.CLIPPY.MANUAL_UNWRAP_OR_DEFAULT Rust Clippy Lints check if a `match` or `if let` can be simplified with `unwrap_or_default` 3 False
RS.CLIPPY.MANUAL_WHILE_LET_SOME Rust Clippy Lints checking for emptiness of a `Vec` in the loop condition and popping an element in the body 3 False
RS.CLIPPY.MANY_SINGLE_CHAR_NAMES Rust Clippy Lints too many single character bindings 3 False
RS.CLIPPY.MAP_ALL_ANY_IDENTITY Rust Clippy Lints combine `.map(_)` followed by `.all(identity)`/`.any(identity)` into a single call 3 False
RS.CLIPPY.MAP_CLONE Rust Clippy Lints using `iterator.map(|x| x.clone())`, or dereferencing closures for `Copy` types 3 False
RS.CLIPPY.MAP_COLLECT_RESULT_UNIT Rust Clippy Lints using `.map(_).collect::<Result<(),_>()`, which can be replaced with `try_for_each` 3 False
RS.CLIPPY.MAP_ENTRY Rust Clippy Lints use of `contains_key` followed by `insert` on a `HashMap` or `BTreeMap` 3 False
RS.CLIPPY.MAP_ERR_IGNORE Rust Clippy Lints `map_err` should not ignore the original error 3 False
RS.CLIPPY.MAP_FLATTEN Rust Clippy Lints using combinations of `flatten` and `map` which can usually be written as a single method call 3 False
RS.CLIPPY.MAP_IDENTITY Rust Clippy Lints using iterator.map(|x| x) 3 False
RS.CLIPPY.MAP_UNWRAP_OR Rust Clippy Lints using `.map(f).unwrap_or(a)` or `.map(f).unwrap_or_else(func)`, which are more succinctly expressed as `map_or(a, f)` or `map_or_else(a, f)` 3 False
RS.CLIPPY.MAP_WITH_UNUSED_ARGUMENT_OVER_RANGES Rust Clippy Lints map of a trivial closure (not dependent on parameter) over a range 3 False
RS.CLIPPY.MATCH_AS_REF Rust Clippy Lints a `match` on an Option value instead of using `as_ref()` or `as_mut` 3 False
RS.CLIPPY.MATCH_BOOL Rust Clippy Lints a `match` on a boolean expression instead of an `if..else` block 3 False
RS.CLIPPY.MATCH_LIKE_MATCHES_MACRO Rust Clippy Lints a match that could be written with the matches! macro 3 False
RS.CLIPPY.MATCH_OVERLAPPING_ARM Rust Clippy Lints a `match` with overlapping arms 3 False
RS.CLIPPY.MATCH_REF_PATS Rust Clippy Lints a `match` or `if let` with all arms prefixed with `&` instead of deref-ing the match expression 3 False
RS.CLIPPY.MATCH_RESULT_OK Rust Clippy Lints usage of `ok()` in `let Some(pat)` statements is unnecessary, match on `Ok(pat)` instead 3 False
RS.CLIPPY.MATCH_SAME_ARMS Rust Clippy Lints `match` with identical arm bodies 3 False
RS.CLIPPY.MATCH_SINGLE_BINDING Rust Clippy Lints a match with a single binding instead of using `let` statement 3 False
RS.CLIPPY.MATCH_STR_CASE_MISMATCH Rust Clippy Lints creation of a case altering match expression with non-compliant arms 3 False
RS.CLIPPY.MATCH_WILDCARD_FOR_SINGLE_VARIANTS Rust Clippy Lints a wildcard enum match for a single variant 3 False
RS.CLIPPY.MATCH_WILD_ERR_ARM Rust Clippy Lints a `match` with `Err(_)` arm and take drastic actions 3 False
RS.CLIPPY.MAYBE_INFINITE_ITER Rust Clippy Lints possible infinite iteration 3 False
RS.CLIPPY.MEM_FORGET Rust Clippy Lints `mem::forget` usage on `Drop` types, likely to cause memory leaks 3 False
RS.CLIPPY.MEM_REPLACE_OPTION_WITH_NONE Rust Clippy Lints replacing an `Option` with `None` instead of `take()` 3 False
RS.CLIPPY.MEM_REPLACE_OPTION_WITH_SOME Rust Clippy Lints replacing an `Option` with `Some` instead of `replace()` 3 False
RS.CLIPPY.MEM_REPLACE_WITH_DEFAULT Rust Clippy Lints replacing a value of type `T` with `T::default()` instead of using `std::mem::take` 3 False
RS.CLIPPY.MEM_REPLACE_WITH_UNINIT Rust Clippy Lints `mem::replace(&mut _, mem::uninitialized())` or `mem::replace(&mut _, mem::zeroed())` 3 False
RS.CLIPPY.MIN_IDENT_CHARS Rust Clippy Lints disallows idents that are too short 3 False
RS.CLIPPY.MIN_MAX Rust Clippy Lints `min(_, max(_, _))` (or vice versa) with bounds clamping the result to a constant 3 False
RS.CLIPPY.MISMATCHING_TYPE_PARAM_ORDER Rust Clippy Lints type parameter positioned inconsistently between type def and impl block 3 False
RS.CLIPPY.MISNAMED_GETTERS Rust Clippy Lints getter method returning the wrong field 3 False
RS.CLIPPY.MISREFACTORED_ASSIGN_OP Rust Clippy Lints having a variable on both sides of an assign op 3 False
RS.CLIPPY.MISSING_ASSERTS_FOR_INDEXING Rust Clippy Lints indexing into a slice multiple times without an `assert` 3 False
RS.CLIPPY.MISSING_ASSERT_MESSAGE Rust Clippy Lints checks assertions without a custom panic message 3 False
RS.CLIPPY.MISSING_CONST_FOR_FN Rust Clippy Lints Lint functions definitions that could be made `const fn` 3 False
RS.CLIPPY.MISSING_CONST_FOR_THREAD_LOCAL Rust Clippy Lints suggest using `const` in `thread_local!` macro 3 False
RS.CLIPPY.MISSING_DOCS_IN_PRIVATE_ITEMS Rust Clippy Lints detects missing documentation for private members 3 False
RS.CLIPPY.MISSING_ENFORCED_IMPORT_RENAMES Rust Clippy Lints enforce import renames 3 False
RS.CLIPPY.MISSING_ERRORS_DOC Rust Clippy Lints `pub fn` returns `Result` without `# Errors` in doc comment 3 False
RS.CLIPPY.MISSING_FIELDS_IN_DEBUG Rust Clippy Lints missing fields in manual `Debug` implementation 3 False
RS.CLIPPY.MISSING_INLINE_IN_PUBLIC_ITEMS Rust Clippy Lints detects missing `#[inline]` attribute for public callables (functions, trait methods, methods...) 3 False
RS.CLIPPY.MISSING_PANICS_DOC Rust Clippy Lints `pub fn` may panic without `# Panics` in doc comment 3 False
RS.CLIPPY.MISSING_SAFETY_DOC Rust Clippy Lints `pub unsafe fn` without `# Safety` docs 3 False
RS.CLIPPY.MISSING_SPIN_LOOP Rust Clippy Lints An empty busy waiting loop 3 False
RS.CLIPPY.MISSING_TRAIT_METHODS Rust Clippy Lints trait implementation uses default provided method 3 False
RS.CLIPPY.MISSING_TRANSMUTE_ANNOTATIONS Rust Clippy Lints warns if a transmute call doesn't have all generics specified 3 False
RS.CLIPPY.MISTYPED_LITERAL_SUFFIXES Rust Clippy Lints mistyped literal suffix 3 False
RS.CLIPPY.MIXED_ATTRIBUTES_STYLE Rust Clippy Lints item has both inner and outer attributes 3 False
RS.CLIPPY.MIXED_CASE_HEX_LITERALS Rust Clippy Lints hex literals whose letter digits are not consistently upper- or lowercased 3 False
RS.CLIPPY.MIXED_READ_WRITE_IN_EXPRESSION Rust Clippy Lints whether a variable read occurs before a write depends on sub-expression evaluation order 3 False
RS.CLIPPY.MODULE_INCEPTION Rust Clippy Lints modules that have the same name as their parent module 3 False
RS.CLIPPY.MODULE_NAME_REPETITIONS Rust Clippy Lints type names prefixed/postfixed with their containing module's name 3 False
RS.CLIPPY.MODULO_ARITHMETIC Rust Clippy Lints any modulo arithmetic statement 3 False
RS.CLIPPY.MODULO_ONE Rust Clippy Lints taking an integer modulo +/-1, which can either panic/overflow or always returns 0 3 False
RS.CLIPPY.MOD_MODULE_FILES Rust Clippy Lints checks that module layout is consistent 3 False
RS.CLIPPY.MULTIPLE_BOUND_LOCATIONS Rust Clippy Lints defining generic bounds in multiple locations 3 False
RS.CLIPPY.MULTIPLE_CRATE_VERSIONS Rust Clippy Lints multiple versions of the same crate being used 3 False
RS.CLIPPY.MULTIPLE_INHERENT_IMPL Rust Clippy Lints Multiple inherent impl that could be grouped 3 False
RS.CLIPPY.MULTIPLE_UNSAFE_OPS_PER_BLOCK Rust Clippy Lints more than one unsafe operation per `unsafe` block 3 False
RS.CLIPPY.MULTI_ASSIGNMENTS Rust Clippy Lints instead of using `a = b = c;` use `a = c; b = c;` 3 False
RS.CLIPPY.MUST_USE_CANDIDATE Rust Clippy Lints function or method that could take a `#[must_use]` attribute 3 False
RS.CLIPPY.MUST_USE_UNIT Rust Clippy Lints `#[must_use]` attribute on a unit-returning function / method 3 False
RS.CLIPPY.MUTABLE_KEY_TYPE Rust Clippy Lints Check for mutable `Map`/`Set` key type 3 False
RS.CLIPPY.MUTEX_ATOMIC Rust Clippy Lints using a mutex where an atomic value could be used instead. 3 False
RS.CLIPPY.MUTEX_INTEGER Rust Clippy Lints using a mutex for an integer type 3 False
RS.CLIPPY.MUT_FROM_REF Rust Clippy Lints fns that create mutable refs from immutable ref args 3 False
RS.CLIPPY.MUT_MUT Rust Clippy Lints usage of double-mut refs, e.g., `&mut &mut ...` 3 False
RS.CLIPPY.MUT_MUTEX_LOCK Rust Clippy Lints `&mut Mutex::lock` does unnecessary locking 3 False
RS.CLIPPY.MUT_RANGE_BOUND Rust Clippy Lints for loop over a range where one of the bounds is a mutable variable 3 False
RS.CLIPPY.NAIVE_BYTECOUNT Rust Clippy Lints use of naive `<slice>.filter(|&x| x == y).count()` to count byte values 3 False
RS.CLIPPY.NEEDLESS_ARBITRARY_SELF_TYPE Rust Clippy Lints type of `self` parameter is already by default `Self` 3 False
RS.CLIPPY.NEEDLESS_AS_BYTES Rust Clippy Lints detect useless calls to `as_bytes()` 3 False
RS.CLIPPY.NEEDLESS_BITWISE_BOOL Rust Clippy Lints Boolean expressions that use bitwise rather than lazy operators 3 False
RS.CLIPPY.NEEDLESS_BOOL Rust Clippy Lints if-statements with plain booleans in the then- and else-clause, e.g., `if p { true } else { false }` 3 False
RS.CLIPPY.NEEDLESS_BOOL_ASSIGN Rust Clippy Lints setting the same boolean variable in both branches of an if-statement 3 False
RS.CLIPPY.NEEDLESS_BORROW Rust Clippy Lints taking a reference that is going to be automatically dereferenced 3 False
RS.CLIPPY.NEEDLESS_BORROWED_REFERENCE Rust Clippy Lints destructuring a reference and borrowing the inner value 3 False
RS.CLIPPY.NEEDLESS_BORROWS_FOR_GENERIC_ARGS Rust Clippy Lints taking a reference that is going to be automatically dereferenced 3 False
RS.CLIPPY.NEEDLESS_CHARACTER_ITERATION Rust Clippy Lints is_ascii() called on a char iterator 3 False
RS.CLIPPY.NEEDLESS_COLLECT Rust Clippy Lints collecting an iterator when collect is not needed 3 False
RS.CLIPPY.NEEDLESS_CONTINUE Rust Clippy Lints `continue` statements that can be replaced by a rearrangement of code 3 False
RS.CLIPPY.NEEDLESS_DOCTEST_MAIN Rust Clippy Lints presence of `fn main() {` in code examples 3 False
RS.CLIPPY.NEEDLESS_ELSE Rust Clippy Lints empty else branch 3 False
RS.CLIPPY.NEEDLESS_FOR_EACH Rust Clippy Lints using `for_each` where a `for` loop would be simpler 3 False
RS.CLIPPY.NEEDLESS_IF Rust Clippy Lints checks for empty if branches 3 False
RS.CLIPPY.NEEDLESS_LATE_INIT Rust Clippy Lints late initializations that can be replaced by a `let` statement with an initializer 3 False
RS.CLIPPY.NEEDLESS_LIFETIMES Rust Clippy Lints would allow omitting them 3 False
RS.CLIPPY.NEEDLESS_MATCH Rust Clippy Lints `match` or match-like `if let` that are unnecessary 3 False
RS.CLIPPY.NEEDLESS_MAYBE_SIZED Rust Clippy Lints a `?Sized` bound that is unusable due to a `Sized` requirement 3 False
RS.CLIPPY.NEEDLESS_OPTION_AS_DEREF Rust Clippy Lints no-op use of `deref` or `deref_mut` method to `Option`. 3 False
RS.CLIPPY.NEEDLESS_OPTION_TAKE Rust Clippy Lints using `.as_ref().take()` on a temporary value 3 False
RS.CLIPPY.NEEDLESS_PARENS_ON_RANGE_LITERALS Rust Clippy Lints needless parenthesis on range literals can be removed 3 False
RS.CLIPPY.NEEDLESS_PASS_BY_REF_MUT Rust Clippy Lints using a `&mut` argument when it's not mutated 3 False
RS.CLIPPY.NEEDLESS_PASS_BY_VALUE Rust Clippy Lints functions taking arguments by value, but not consuming them in its body 3 False
RS.CLIPPY.NEEDLESS_PUB_SELF Rust Clippy Lints checks for usage of `pub(self)` and `pub(in self)`. 3 False
RS.CLIPPY.NEEDLESS_QUESTION_MARK Rust Clippy Lints using `Ok(x?)` or `Some(x?)` where `x` would be equivalent 3 False
RS.CLIPPY.NEEDLESS_RANGE_LOOP Rust Clippy Lints for-looping over a range of indices where an iterator over items would do 3 False
RS.CLIPPY.NEEDLESS_RAW_STRINGS Rust Clippy Lints suggests using a string literal when a raw string literal is unnecessary 3 False
RS.CLIPPY.NEEDLESS_RAW_STRING_HASHES Rust Clippy Lints suggests reducing the number of hashes around a raw string literal 3 False
RS.CLIPPY.NEEDLESS_RETURN Rust Clippy Lints using a return statement like `return expr;` where an expression would suffice 3 False
RS.CLIPPY.NEEDLESS_RETURN_WITH_QUESTION_MARK Rust Clippy Lints using a return statement like `return Err(expr)?;` where removing it would suffice 3 False
RS.CLIPPY.NEEDLESS_SPLITN Rust Clippy Lints usages of `str::splitn` that can be replaced with `str::split` 3 False
RS.CLIPPY.NEEDLESS_UPDATE Rust Clippy Lints using `Foo { ..base }` when there are no missing fields 3 False
RS.CLIPPY.NEGATIVE_FEATURE_NAMES Rust Clippy Lints usage of a negative feature name 3 False
RS.CLIPPY.NEG_CMP_OP_ON_PARTIAL_ORD Rust Clippy Lints The use of negated comparison operators on partially ordered types may produce confusing code. 3 False
RS.CLIPPY.NEG_MULTIPLY Rust Clippy Lints multiplying integers by `-1` 3 False
RS.CLIPPY.NEVER_LOOP Rust Clippy Lints any loop that will always `break` or `return` 3 False
RS.CLIPPY.NEW_RET_NO_SELF Rust Clippy Lints not returning type containing `Self` in a `new` method 3 False
RS.CLIPPY.NEW_WITHOUT_DEFAULT Rust Clippy Lints `pub fn new() -> Self` method without `Default` implementation 3 False
RS.CLIPPY.NONMINIMAL_BOOL Rust Clippy Lints boolean expressions that can be written more concisely 3 False
RS.CLIPPY.NONSENSICAL_OPEN_OPTIONS Rust Clippy Lints nonsensical combination of options for opening a file 3 False
RS.CLIPPY.NONSTANDARD_MACRO_BRACES Rust Clippy Lints check consistent use of braces in macro 3 False
RS.CLIPPY.NON_ASCII_LITERAL Rust Clippy Lints using any literal non-ASCII chars in a string literal instead of using the `\\u` escape 3 False
RS.CLIPPY.NON_CANONICAL_CLONE_IMPL Rust Clippy Lints non-canonical implementation of `Clone` on a `Copy` type 3 False
RS.CLIPPY.NON_CANONICAL_PARTIAL_ORD_IMPL Rust Clippy Lints non-canonical implementation of `PartialOrd` on an `Ord` type 3 False
RS.CLIPPY.NON_MINIMAL_CFG Rust Clippy Lints ensure that all `cfg(any())` and `cfg(all())` have more than one condition 3 False
RS.CLIPPY.NON_OCTAL_UNIX_PERMISSIONS Rust Clippy Lints use of non-octal value to set unix file permissions, which will be translated into octal 3 False
RS.CLIPPY.NON_SEND_FIELDS_IN_SEND_TY Rust Clippy Lints there is a field that is not safe to be sent to another thread in a `Send` struct 3 False
RS.CLIPPY.NON_STD_LAZY_STATICS Rust Clippy Lints lazy static that could be replaced by `std::sync::LazyLock` 3 False
RS.CLIPPY.NON_ZERO_SUGGESTIONS Rust Clippy Lints suggests using `NonZero#` from `u#` or `i#` for more efficient and type-safe conversions 3 False
RS.CLIPPY.NOT_UNSAFE_PTR_ARG_DEREF Rust Clippy Lints public functions dereferencing raw pointer arguments but not marked `unsafe` 3 False
RS.CLIPPY.NO_EFFECT Rust Clippy Lints statements with no effect 3 False
RS.CLIPPY.NO_EFFECT_REPLACE Rust Clippy Lints replace with no effect 3 False
RS.CLIPPY.NO_EFFECT_UNDERSCORE_BINDING Rust Clippy Lints binding to `_` prefixed variable with no side-effect 3 False
RS.CLIPPY.NO_MANGLE_WITH_RUST_ABI Rust Clippy Lints convert Rust ABI functions to C ABI 3 False
RS.CLIPPY.OBFUSCATED_IF_ELSE Rust Clippy Lints more clearly with `if .. else ..` 3 False
RS.CLIPPY.OCTAL_ESCAPES Rust Clippy Lints string escape sequences looking like octal characters 3 False
RS.CLIPPY.OK_EXPECT Rust Clippy Lints using `ok().expect()`, which gives worse error messages than calling `expect` directly on the Result 3 False
RS.CLIPPY.ONLY_USED_IN_RECURSION Rust Clippy Lints arguments that is only used in recursion can be removed 3 False
RS.CLIPPY.OPTION_AS_REF_CLONED Rust Clippy Lints cloning an `Option` via `as_ref().cloned()` 3 False
RS.CLIPPY.OPTION_AS_REF_DEREF Rust Clippy Lints using `as_ref().map(Deref::deref)`, which is more succinctly expressed as `as_deref()` 3 False
RS.CLIPPY.OPTION_ENV_UNWRAP Rust Clippy Lints using `option_env!(...).unwrap()` to get environment variable 3 False
RS.CLIPPY.OPTION_FILTER_MAP Rust Clippy Lints filtering `Option` for `Some` then force-unwrapping, which can be one type-safe operation 3 False
RS.CLIPPY.OPTION_IF_LET_ELSE Rust Clippy Lints reimplementation of Option::map_or 3 False
RS.CLIPPY.OPTION_MAP_OR_NONE Rust Clippy Lints using `Option.map_or(None, f)`, which is more succinctly expressed as `and_then(f)` 3 False
RS.CLIPPY.OPTION_MAP_UNIT_FN Rust Clippy Lints using `option.map(f)`, where `f` is a function or closure that returns `()` 3 False
RS.CLIPPY.OPTION_OPTION Rust Clippy Lints usage of `Option<Option<T>>` 3 False
RS.CLIPPY.OP_REF Rust Clippy Lints taking a reference to satisfy the type constraints on `==` 3 False
RS.CLIPPY.OR_FUN_CALL Rust Clippy Lints using any `*or` method with a function call, which suggests `*or_else` 3 False
RS.CLIPPY.OR_THEN_UNWRAP Rust Clippy Lints checks for `.or(…).unwrap()` calls to Options and Results. 3 False
RS.CLIPPY.OUT_OF_BOUNDS_INDEXING Rust Clippy Lints out of bounds constant indexing 3 False
RS.CLIPPY.OVERLY_COMPLEX_BOOL_EXPR Rust Clippy Lints boolean expressions that contain terminals which can be eliminated 3 False
RS.CLIPPY.OWNED_COW Rust Clippy Lints needlessly owned Cow type 3 False
RS.CLIPPY.PANIC Rust Clippy Lints usage of the `panic!` macro 3 False
RS.CLIPPY.PANICKING_OVERFLOW_CHECKS Rust Clippy Lints overflow checks which will panic in debug mode 3 False
RS.CLIPPY.PANICKING_UNWRAP Rust Clippy Lints checks for calls of `unwrap[_err]()` that will always fail 3 False
RS.CLIPPY.PANIC_IN_RESULT_FN Rust Clippy Lints functions of type `Result<..>` that contain `panic!()` or assertion 3 False
RS.CLIPPY.PARTIALEQ_NE_IMPL Rust Clippy Lints re-implementing `PartialEq::ne` 3 False
RS.CLIPPY.PARTIALEQ_TO_NONE Rust Clippy Lints Binary comparison to `Option<T>::None` relies on `T: PartialEq`, which is unneeded 3 False
RS.CLIPPY.PARTIAL_PUB_FIELDS Rust Clippy Lints partial fields of a struct are public 3 False
RS.CLIPPY.PATHBUF_INIT_THEN_PUSH Rust Clippy Lints `push` immediately after `PathBuf` creation 3 False
RS.CLIPPY.PATH_BUF_PUSH_OVERWRITE Rust Clippy Lints calling `push` with file system root on `PathBuf` can overwrite it 3 False
RS.CLIPPY.PATH_ENDS_WITH_EXT Rust Clippy Lints attempting to compare file extensions using `Path::ends_with` 3 False
RS.CLIPPY.PATTERN_TYPE_MISMATCH Rust Clippy Lints type of pattern does not match the expression type 3 False
RS.CLIPPY.PERMISSIONS_SET_READONLY_FALSE Rust Clippy Lints Checks for calls to `std::fs::Permissions.set_readonly` with argument `false` 3 False
RS.CLIPPY.POINTERS_IN_NOMEM_ASM_BLOCK Rust Clippy Lints pointers in nomem asm block 3 False
RS.CLIPPY.POINTER_FORMAT Rust Clippy Lints formatting a pointer 3 False
RS.CLIPPY.POSSIBLE_MISSING_COMMA Rust Clippy Lints possible missing comma in array 3 False
RS.CLIPPY.PRECEDENCE Rust Clippy Lints operations where precedence may be unclear 3 False
RS.CLIPPY.PRECEDENCE_BITS Rust Clippy Lints operations mixing bit shifting with bit combining/masking 3 False
RS.CLIPPY.PRINTLN_EMPTY_STRING Rust Clippy Lints using `println!(\"\")` with an empty string 3 False
RS.CLIPPY.PRINT_IN_FORMAT_IMPL Rust Clippy Lints use of a print macro in a formatting trait impl 3 False
RS.CLIPPY.PRINT_LITERAL Rust Clippy Lints printing a literal with a format string 3 False
RS.CLIPPY.PRINT_STDERR Rust Clippy Lints printing on stderr 3 False
RS.CLIPPY.PRINT_STDOUT Rust Clippy Lints printing on stdout 3 False
RS.CLIPPY.PRINT_WITH_NEWLINE Rust Clippy Lints using `print!()` with a format string that ends in a single newline 3 False
RS.CLIPPY.PTR_ARG Rust Clippy Lints fn arguments of the type `&Vec<...>` or `&String`, suggesting to use `&[...]` or `&str` instead, respectively 3 False
RS.CLIPPY.PTR_AS_PTR Rust Clippy Lints casting using `as` between raw pointers that doesn't change their constness, where `pointer::cast` could take the place of `as` 3 False
RS.CLIPPY.PTR_CAST_CONSTNESS Rust Clippy Lints casting using `as` on raw pointers to change constness when specialized methods apply 3 False
RS.CLIPPY.PTR_EQ Rust Clippy Lints use `std::ptr::eq` when comparing raw pointers 3 False
RS.CLIPPY.PTR_OFFSET_WITH_CAST Rust Clippy Lints unneeded pointer offset cast 3 False
RS.CLIPPY.PUB_UNDERSCORE_FIELDS Rust Clippy Lints struct field prefixed with underscore and marked public 3 False
RS.CLIPPY.PUB_USE Rust Clippy Lints restricts the usage of `pub use` 3 False
RS.CLIPPY.PUB_WITHOUT_SHORTHAND Rust Clippy Lints disallows usage of `pub(in <loc>)` with `in` 3 False
RS.CLIPPY.PUB_WITH_SHORTHAND Rust Clippy Lints disallows usage of `pub(<loc>)`, without `in` 3 False
RS.CLIPPY.QUESTION_MARK Rust Clippy Lints checks for expressions that could be replaced by the `?` operator 3 False
RS.CLIPPY.QUESTION_MARK_USED Rust Clippy Lints checks if the `?` operator is used 3 False
RS.CLIPPY.RANGE_MINUS_ONE Rust Clippy Lints `x..=(y-1)` reads better as `x..y` 3 False
RS.CLIPPY.RANGE_PLUS_ONE Rust Clippy Lints `x..(y+1)` reads better as `x..=y` 3 False
RS.CLIPPY.RANGE_ZIP_WITH_LEN Rust Clippy Lints zipping iterator with a range when `enumerate()` would do 3 False
RS.CLIPPY.RC_BUFFER Rust Clippy Lints shared ownership of a buffer type 3 False
RS.CLIPPY.RC_CLONE_IN_VEC_INIT Rust Clippy Lints initializing reference-counted pointer in `vec![elem; len]` 3 False
RS.CLIPPY.RC_MUTEX Rust Clippy Lints usage of `Rc<Mutex<T>>` 3 False
RS.CLIPPY.READONLY_WRITE_LOCK Rust Clippy Lints acquiring a write lock when a read lock would work 3 False
RS.CLIPPY.READ_LINE_WITHOUT_TRIM Rust Clippy Lints calling `Stdin::read_line`, then trying to parse it without first trimming 3 False
RS.CLIPPY.READ_ZERO_BYTE_VEC Rust Clippy Lints checks for reads into a zero-length `Vec` 3 False
RS.CLIPPY.RECURSIVE_FORMAT_IMPL Rust Clippy Lints Format trait method called while implementing the same Format trait 3 False
RS.CLIPPY.REDUNDANT_ALLOCATION Rust Clippy Lints redundant allocation 3 False
RS.CLIPPY.REDUNDANT_ASYNC_BLOCK Rust Clippy Lints `async { future.await }` can be replaced by `future` 3 False
RS.CLIPPY.REDUNDANT_AS_STR Rust Clippy Lints `as_str` used to call a method on `str` that is also available on `String` 3 False
RS.CLIPPY.REDUNDANT_AT_REST_PATTERN Rust Clippy Lints checks for `[all @ ..]` where `all` would suffice 3 False
RS.CLIPPY.REDUNDANT_CLONE Rust Clippy Lints `clone()` of an owned value that is going to be dropped immediately 3 False
RS.CLIPPY.REDUNDANT_CLOSURE Rust Clippy Lints redundant closures, i.e., `|a| foo(a)` (which can be written as just `foo`) 3 False
RS.CLIPPY.REDUNDANT_CLOSURE_CALL Rust Clippy Lints throwaway closures called in the expression they are defined 3 False
RS.CLIPPY.REDUNDANT_CLOSURE_FOR_METHOD_CALLS Rust Clippy Lints redundant closures for method calls 3 False
RS.CLIPPY.REDUNDANT_COMPARISONS Rust Clippy Lints double comparisons where one of them can be removed 3 False
RS.CLIPPY.REDUNDANT_ELSE Rust Clippy Lints `else` branch that can be removed without changing semantics 3 False
RS.CLIPPY.REDUNDANT_FEATURE_NAMES Rust Clippy Lints usage of a redundant feature name 3 False
RS.CLIPPY.REDUNDANT_FIELD_NAMES Rust Clippy Lints checks for fields in struct literals where shorthands could be used 3 False
RS.CLIPPY.REDUNDANT_GUARDS Rust Clippy Lints checks for unnecessary guards in match expressions 3 False
RS.CLIPPY.REDUNDANT_LOCALS Rust Clippy Lints redundant redefinition of a local binding 3 False
RS.CLIPPY.REDUNDANT_PATTERN Rust Clippy Lints using `name @ _` in a pattern 3 False
RS.CLIPPY.REDUNDANT_PATTERN_MATCHING Rust Clippy Lints use the proper utility function avoiding an `if let` 3 False
RS.CLIPPY.REDUNDANT_PUB_CRATE Rust Clippy Lints Using `pub(crate)` visibility on items that are not crate visible due to the visibility of the module that contains them. 3 False
RS.CLIPPY.REDUNDANT_SLICING Rust Clippy Lints redundant slicing of the whole range of a type 3 False
RS.CLIPPY.REDUNDANT_STATIC_LIFETIMES Rust Clippy Lints Using explicit `'static` lifetime for constants or statics when elision rules would allow omitting them. 3 False
RS.CLIPPY.REDUNDANT_TEST_PREFIX Rust Clippy Lints redundant `test_` prefix in test function name 3 False
RS.CLIPPY.REDUNDANT_TYPE_ANNOTATIONS Rust Clippy Lints warns about needless / redundant type annotations. 3 False
RS.CLIPPY.REF_AS_PTR Rust Clippy Lints using `as` to cast a reference to pointer 3 False
RS.CLIPPY.REF_BINDING_TO_REFERENCE Rust Clippy Lints `ref` binding to a reference 3 False
RS.CLIPPY.REF_OPTION Rust Clippy Lints function signature uses `&Option<T>` instead of `Option<&T>` 3 False
RS.CLIPPY.REF_OPTION_REF Rust Clippy Lints use `Option<&T>` instead of `&Option<&T>` 3 False
RS.CLIPPY.REF_PATTERNS Rust Clippy Lints use of a ref pattern, e.g. Some(ref value) 3 False
RS.CLIPPY.REGEX_CREATION_IN_LOOPS Rust Clippy Lints regular expression compilation performed in a loop 3 False
RS.CLIPPY.RENAMED_FUNCTION_PARAMS Rust Clippy Lints renamed function parameters in trait implementation 3 False
RS.CLIPPY.REPEAT_ONCE Rust Clippy Lints using `.repeat(1)` instead of `String.clone()`, `str.to_string()` or `slice.to_vec()` 3 False
RS.CLIPPY.REPEAT_VEC_WITH_CAPACITY Rust Clippy Lints repeating a `Vec::with_capacity` expression which does not retain capacity 3 False
RS.CLIPPY.REPR_PACKED_WITHOUT_ABI Rust Clippy Lints ensures that `repr(packed)` always comes with a qualified ABI 3 False
RS.CLIPPY.RESERVE_AFTER_INITIALIZATION Rust Clippy Lints `reserve` called immediately after `Vec` creation 3 False
RS.CLIPPY.REST_PAT_IN_FULLY_BOUND_STRUCTS Rust Clippy Lints a match on a struct that binds all fields but still uses the wildcard pattern 3 False
RS.CLIPPY.RESULT_FILTER_MAP Rust Clippy Lints filtering `Result` for `Ok` then force-unwrapping, which can be one type-safe operation 3 False
RS.CLIPPY.RESULT_LARGE_ERR Rust Clippy Lints function returning `Result` with large `Err` type 3 False
RS.CLIPPY.RESULT_MAP_OR_INTO_OPTION Rust Clippy Lints using `Result.map_or(None, Some)`, which is more succinctly expressed as `ok()` 3 False
RS.CLIPPY.RESULT_MAP_UNIT_FN Rust Clippy Lints using `result.map(f)`, where `f` is a function or closure that returns `()` 3 False
RS.CLIPPY.RESULT_UNIT_ERR Rust Clippy Lints public function returning `Result` with an `Err` type of `()` 3 False
RS.CLIPPY.RETURN_AND_THEN Rust Clippy Lints using `Option::and_then` or `Result::and_then` to chain a computation that returns an `Option` or a `Result` 3 False
RS.CLIPPY.RETURN_SELF_NOT_MUST_USE Rust Clippy Lints missing `#[must_use]` annotation on a method returning `Self` 3 False
RS.CLIPPY.REVERSED_EMPTY_RANGES Rust Clippy Lints reversing the limits of range expressions, resulting in empty ranges 3 False
RS.CLIPPY.SAME_FUNCTIONS_IN_IF_CONDITION Rust Clippy Lints consecutive `if`s with the same function call 3 False
RS.CLIPPY.SAME_ITEM_PUSH Rust Clippy Lints the same item is pushed inside of a for loop 3 False
RS.CLIPPY.SAME_NAME_METHOD Rust Clippy Lints two method with same name 3 False
RS.CLIPPY.SEARCH_IS_SOME Rust Clippy Lints using an iterator or string search followed by `is_some()` or `is_none()`, which is more succinctly expressed as a call to `any()` or `contains()` (with negation in case of `is_none()`) 3 False
RS.CLIPPY.SEEK_FROM_CURRENT Rust Clippy Lints use dedicated method for seek from current position 3 False
RS.CLIPPY.SEEK_TO_START_INSTEAD_OF_REWIND Rust Clippy Lints jumping to the start of stream using `seek` method 3 False
RS.CLIPPY.SELF_ASSIGNMENT Rust Clippy Lints explicit self-assignment 3 False
RS.CLIPPY.SELF_NAMED_CONSTRUCTORS Rust Clippy Lints method should not have the same name as the type it is implemented for 3 False
RS.CLIPPY.SELF_NAMED_MODULE_FILES Rust Clippy Lints checks that module layout is consistent 3 False
RS.CLIPPY.SEMICOLON_IF_NOTHING_RETURNED Rust Clippy Lints add a semicolon if nothing is returned 3 False
RS.CLIPPY.SEMICOLON_INSIDE_BLOCK Rust Clippy Lints add a semicolon inside the block 3 False
RS.CLIPPY.SEMICOLON_OUTSIDE_BLOCK Rust Clippy Lints add a semicolon outside the block 3 False
RS.CLIPPY.SEPARATED_LITERAL_SUFFIX Rust Clippy Lints literals whose suffix is separated by an underscore 3 False
RS.CLIPPY.SERDE_API_MISUSE Rust Clippy Lints various things that will negatively affect your serde experience 3 False
RS.CLIPPY.SET_CONTAINS_OR_INSERT Rust Clippy Lints call to `<set>::contains` followed by `<set>::insert` 3 False
RS.CLIPPY.SHADOW_REUSE Rust Clippy Lints rebinding a name to an expression that reuses the original value, e.g., `let x = x + 1` 3 False
RS.CLIPPY.SHADOW_SAME Rust Clippy Lints rebinding a name to itself, e.g., `let mut x = &mut x` 3 False
RS.CLIPPY.SHADOW_UNRELATED Rust Clippy Lints rebinding a name without even using the original value 3 False
RS.CLIPPY.SHORT_CIRCUIT_STATEMENT Rust Clippy Lints using a short circuit boolean condition as a statement 3 False
RS.CLIPPY.SHOULD_IMPLEMENT_TRAIT Rust Clippy Lints defining a method that should be implementing a std trait 3 False
RS.CLIPPY.SHOULD_PANIC_WITHOUT_EXPECT Rust Clippy Lints ensures that all `should_panic` attributes specify its expected panic message 3 False
RS.CLIPPY.SIGNIFICANT_DROP_IN_SCRUTINEE Rust Clippy Lints warns when a temporary of a type with a drop with a significant side-effect might have a surprising lifetime 3 False
RS.CLIPPY.SIGNIFICANT_DROP_TIGHTENING Rust Clippy Lints Searches for elements marked with `#[clippy::has_significant_drop]` that could be early dropped but are in fact dropped at the end of their scopes 3 False
RS.CLIPPY.SIMILAR_NAMES Rust Clippy Lints similarly named items and bindings 3 False
RS.CLIPPY.SINGLE_CALL_FN Rust Clippy Lints checks for functions that are only used once 3 False
RS.CLIPPY.SINGLE_CHAR_ADD_STR Rust Clippy Lints `push_str()` or `insert_str()` used with a single-character string literal as parameter 3 False
RS.CLIPPY.SINGLE_CHAR_LIFETIME_NAMES Rust Clippy Lints warns against single-character lifetime names 3 False
RS.CLIPPY.SINGLE_CHAR_PATTERN Rust Clippy Lints using a single-character str where a char could be used, e.g., `_.split(\"x\")` 3 False
RS.CLIPPY.SINGLE_COMPONENT_PATH_IMPORTS Rust Clippy Lints imports with single component path are redundant 3 False
RS.CLIPPY.SINGLE_ELEMENT_LOOP Rust Clippy Lints there is no reason to have a single element loop 3 False
RS.CLIPPY.SINGLE_MATCH Rust Clippy Lints a `match` statement with a single nontrivial arm (i.e., where the other arm is `_ => {}`) instead of `if let` 3 False
RS.CLIPPY.SINGLE_MATCH_ELSE Rust Clippy Lints a `match` statement with two arms where the second arm's pattern is a placeholder instead of a specific match pattern 3 False
RS.CLIPPY.SINGLE_OPTION_MAP Rust Clippy Lints Checks for functions with method calls to `.map(_)` on an arg of type `Option` as the outermost expression. 3 False
RS.CLIPPY.SINGLE_RANGE_IN_VEC_INIT Rust Clippy Lints checks for initialization of `Vec` or arrays which consist of a single range 3 False
RS.CLIPPY.SIZE_OF_IN_ELEMENT_COUNT Rust Clippy Lints using `size_of::<T>` or `size_of_val::<T>` where a count of elements of `T` is expected 3 False
RS.CLIPPY.SIZE_OF_REF Rust Clippy Lints Argument to `size_of_val()` is a double-reference, which is almost certainly unintended 3 False
RS.CLIPPY.SKIP_WHILE_NEXT Rust Clippy Lints using `skip_while(p).next()`, which is more succinctly expressed as `.find(!p)` 3 False
RS.CLIPPY.SLICED_STRING_AS_BYTES Rust Clippy Lints slicing a string and immediately calling as_bytes is less efficient and can lead to panics 3 False
RS.CLIPPY.SLOW_VECTOR_INITIALIZATION Rust Clippy Lints slow vector initialization 3 False
RS.CLIPPY.STABLE_SORT_PRIMITIVE Rust Clippy Lints use of sort() when sort_unstable() is equivalent 3 False
RS.CLIPPY.STD_INSTEAD_OF_ALLOC Rust Clippy Lints type is imported from std when available in alloc 3 False
RS.CLIPPY.STD_INSTEAD_OF_CORE Rust Clippy Lints type is imported from std when available in core 3 False
RS.CLIPPY.STRING_ADD Rust Clippy Lints using `x + ..` where x is a `String` instead of `push_str()` 3 False
RS.CLIPPY.STRING_ADD_ASSIGN Rust Clippy Lints using `x = x + ..` where x is a `String` instead of `push_str()` 3 False
RS.CLIPPY.STRING_EXTEND_CHARS Rust Clippy Lints using `x.extend(s.chars())` where s is a `&str` or `String` 3 False
RS.CLIPPY.STRING_FROM_UTF8_AS_BYTES Rust Clippy Lints casting string slices to byte slices and back 3 False
RS.CLIPPY.STRING_LIT_AS_BYTES Rust Clippy Lints calling `as_bytes` on a string literal instead of using a byte string literal 3 False
RS.CLIPPY.STRING_LIT_CHARS_ANY Rust Clippy Lints checks for `<string_lit>.chars().any(|i| i == c)` 3 False
RS.CLIPPY.STRING_SLICE Rust Clippy Lints slicing a string 3 False
RS.CLIPPY.STRING_TO_STRING Rust Clippy Lints using `to_string()` on a `String`, which should be `clone()` 3 False
RS.CLIPPY.STRLEN_ON_C_STRINGS Rust Clippy Lints using `libc::strlen` on a `CString` or `CStr` value, while `as_bytes().len()` or `to_bytes().len()` respectively can be used instead 3 False
RS.CLIPPY.STRUCT_EXCESSIVE_BOOLS Rust Clippy Lints using too many bools in a struct 3 False
RS.CLIPPY.STRUCT_FIELD_NAMES Rust Clippy Lints structs where all fields share a prefix/postfix or contain the name of the struct 3 False
RS.CLIPPY.STR_SPLIT_AT_NEWLINE Rust Clippy Lints splitting a trimmed string at hard-coded newlines 3 False
RS.CLIPPY.STR_TO_STRING Rust Clippy Lints using `to_string()` on a `&str`, which should be `to_owned()` 3 False
RS.CLIPPY.SUBOPTIMAL_FLOPS Rust Clippy Lints usage of sub-optimal floating point operations 3 False
RS.CLIPPY.SUSPICIOUS_ARITHMETIC_IMPL Rust Clippy Lints suspicious use of operators in impl of arithmetic trait 3 False
RS.CLIPPY.SUSPICIOUS_ASSIGNMENT_FORMATTING Rust Clippy Lints suspicious formatting of `*=`, `-=` or `!=` 3 False
RS.CLIPPY.SUSPICIOUS_COMMAND_ARG_SPACE Rust Clippy Lints single command line argument that looks like it should be multiple arguments 3 False
RS.CLIPPY.SUSPICIOUS_DOC_COMMENTS Rust Clippy Lints suspicious usage of (outer) doc comments 3 False
RS.CLIPPY.SUSPICIOUS_ELSE_FORMATTING Rust Clippy Lints suspicious formatting of `else` 3 False
RS.CLIPPY.SUSPICIOUS_MAP Rust Clippy Lints suspicious usage of map 3 False
RS.CLIPPY.SUSPICIOUS_OPEN_OPTIONS Rust Clippy Lints suspicious combination of options for opening a file 3 False
RS.CLIPPY.SUSPICIOUS_OPERATION_GROUPINGS Rust Clippy Lints groupings of binary operations that look suspiciously like typos 3 False
RS.CLIPPY.SUSPICIOUS_OP_ASSIGN_IMPL Rust Clippy Lints suspicious use of operators in impl of OpAssign trait 3 False
RS.CLIPPY.SUSPICIOUS_SPLITN Rust Clippy Lints checks for `.splitn(0, ..)` and `.splitn(1, ..)` 3 False
RS.CLIPPY.SUSPICIOUS_TO_OWNED Rust Clippy Lints calls to `to_owned` on a `Cow<'_, _>` might not do what they are expected 3 False
RS.CLIPPY.SUSPICIOUS_UNARY_OP_FORMATTING Rust Clippy Lints suspicious formatting of unary `-` or `!` on the RHS of a BinOp 3 False
RS.CLIPPY.SUSPICIOUS_XOR_USED_AS_POW Rust Clippy Lints XOR (`^`) operator possibly used as exponentiation operator 3 False
RS.CLIPPY.SWAP_PTR_TO_REF Rust Clippy Lints call to `mem::swap` using pointer derived references 3 False
RS.CLIPPY.SWAP_WITH_TEMPORARY Rust Clippy Lints detect swap with a temporary value 3 False
RS.CLIPPY.TABS_IN_DOC_COMMENTS Rust Clippy Lints using tabs in doc comments is not recommended 3 False
RS.CLIPPY.TEMPORARY_ASSIGNMENT Rust Clippy Lints assignments to temporaries 3 False
RS.CLIPPY.TESTS_OUTSIDE_TEST_MODULE Rust Clippy Lints A test function is outside the testing module. 3 False
RS.CLIPPY.TEST_ATTR_IN_DOCTEST Rust Clippy Lints presence of `#[test]` in code examples 3 False
RS.CLIPPY.TODO Rust Clippy Lints `todo!` should not be present in production code 3 False
RS.CLIPPY.TOO_LONG_FIRST_DOC_PARAGRAPH Rust Clippy Lints ensure the first documentation paragraph is short 3 False
RS.CLIPPY.TOO_MANY_ARGUMENTS Rust Clippy Lints functions with too many arguments 3 False
RS.CLIPPY.TOO_MANY_LINES Rust Clippy Lints functions with too many lines 3 False
RS.CLIPPY.TOPLEVEL_REF_ARG Rust Clippy Lints an entire binding declared as `ref`, in a function argument or a `let` statement 3 False
RS.CLIPPY.TO_DIGIT_IS_SOME Rust Clippy Lints `char.is_digit()` is clearer 3 False
RS.CLIPPY.TO_STRING_IN_FORMAT_ARGS Rust Clippy Lints `to_string` applied to a type that implements `Display` in format args 3 False
RS.CLIPPY.TO_STRING_TRAIT_IMPL Rust Clippy Lints check for direct implementations of `ToString` 3 False
RS.CLIPPY.TRAILING_EMPTY_ARRAY Rust Clippy Lints struct with a trailing zero-sized array but without `#[repr(C)]` or another `repr` attribute 3 False
RS.CLIPPY.TRAIT_DUPLICATION_IN_BOUNDS Rust Clippy Lints check if the same trait bounds are specified more than once during a generic declaration 3 False
RS.CLIPPY.TRANSMUTES_EXPRESSIBLE_AS_PTR_CASTS Rust Clippy Lints transmutes that could be a pointer cast 3 False
RS.CLIPPY.TRANSMUTE_BYTES_TO_STR Rust Clippy Lints transmutes from a `&[u8]` to a `&str` 3 False
RS.CLIPPY.TRANSMUTE_INT_TO_BOOL Rust Clippy Lints transmutes from an integer to a `bool` 3 False
RS.CLIPPY.TRANSMUTE_INT_TO_NON_ZERO Rust Clippy Lints transmutes from an integer to a non-zero wrapper 3 False
RS.CLIPPY.TRANSMUTE_NULL_TO_FN Rust Clippy Lints transmute results in a null function pointer, which is undefined behavior 3 False
RS.CLIPPY.TRANSMUTE_PTR_TO_PTR Rust Clippy Lints transmutes from a pointer to a pointer / a reference to a reference 3 False
RS.CLIPPY.TRANSMUTE_PTR_TO_REF Rust Clippy Lints transmutes from a pointer to a reference type 3 False
RS.CLIPPY.TRANSMUTE_UNDEFINED_REPR Rust Clippy Lints transmute to or from a type with an undefined representation 3 False
RS.CLIPPY.TRANSMUTING_NULL Rust Clippy Lints transmutes from a null pointer to a reference, which is undefined behavior 3 False
RS.CLIPPY.TRIM_SPLIT_WHITESPACE Rust Clippy Lints using `str::trim()` or alike before `str::split_whitespace` 3 False
RS.CLIPPY.TRIVIALLY_COPY_PASS_BY_REF Rust Clippy Lints functions taking small copyable arguments by reference 3 False
RS.CLIPPY.TRIVIAL_REGEX Rust Clippy Lints trivial regular expressions 3 False
RS.CLIPPY.TRY_ERR Rust Clippy Lints return errors explicitly rather than hiding them behind a `?` 3 False
RS.CLIPPY.TUPLE_ARRAY_CONVERSIONS Rust Clippy Lints checks for tuple<=>array conversions that are not done with `.into()` 3 False
RS.CLIPPY.TYPE_COMPLEXITY Rust Clippy Lints usage of very complex types that might be better factored into `type` definitions 3 False
RS.CLIPPY.TYPE_ID_ON_BOX Rust Clippy Lints calling `.type_id()` on a boxed trait object 3 False
RS.CLIPPY.TYPE_REPETITION_IN_BOUNDS Rust Clippy Lints types are repeated unnecessarily in trait bounds, use `+` instead of using `T: _, T: _` 3 False
RS.CLIPPY.UNBUFFERED_BYTES Rust Clippy Lints calling .bytes() is very inefficient when data is not in memory 3 False
RS.CLIPPY.UNCHECKED_DURATION_SUBTRACTION Rust Clippy Lints finds unchecked subtraction of a 'Duration' from an 'Instant' 3 False
RS.CLIPPY.UNCONDITIONAL_RECURSION Rust Clippy Lints detect unconditional recursion in some traits implementation 3 False
RS.CLIPPY.UNDOCUMENTED_UNSAFE_BLOCKS Rust Clippy Lints creating an unsafe block without explaining why it is safe 3 False
RS.CLIPPY.UNICODE_NOT_NFC Rust Clippy Lints using a Unicode literal not in NFC normal form (see [Unicode tr15](http://www.unicode.org/reports/tr15/) for further information) 3 False
RS.CLIPPY.UNIMPLEMENTED Rust Clippy Lints `unimplemented!` should not be present in production code 3 False
RS.CLIPPY.UNINHABITED_REFERENCES Rust Clippy Lints reference to uninhabited type 3 False
RS.CLIPPY.UNINIT_ASSUMED_INIT Rust Clippy Lints `MaybeUninit::uninit().assume_init()` 3 False
RS.CLIPPY.UNINIT_VEC Rust Clippy Lints Vec with uninitialized data 3 False
RS.CLIPPY.UNINLINED_FORMAT_ARGS Rust Clippy Lints using non-inlined variables in `format!` calls 3 False
RS.CLIPPY.UNIT_ARG Rust Clippy Lints passing unit to a function 3 False
RS.CLIPPY.UNIT_CMP Rust Clippy Lints comparing unit values 3 False
RS.CLIPPY.UNIT_HASH Rust Clippy Lints hashing a unit value, which does nothing 3 False
RS.CLIPPY.UNIT_RETURN_EXPECTING_ORD Rust Clippy Lints fn arguments of type Fn(...) -> Ord returning the unit type (). 3 False
RS.CLIPPY.UNNECESSARY_BOX_RETURNS Rust Clippy Lints Needlessly returning a Box 3 False
RS.CLIPPY.UNNECESSARY_CAST Rust Clippy Lints cast to the same type, e.g., `x as i32` where `x: i32` 3 False
RS.CLIPPY.UNNECESSARY_CLIPPY_CFG Rust Clippy Lints usage of `cfg_attr(clippy, allow(clippy::lint))` instead of `allow(clippy::lint)` 3 False
RS.CLIPPY.UNNECESSARY_DEBUG_FORMATTING Rust Clippy Lints `Debug` formatting applied to an `OsStr` or `Path` when `.display()` is available 3 False
RS.CLIPPY.UNNECESSARY_FALLIBLE_CONVERSIONS Rust Clippy Lints calling the `try_from` and `try_into` trait methods when `From`/`Into` is implemented 3 False
RS.CLIPPY.UNNECESSARY_FILTER_MAP Rust Clippy Lints using `filter_map` when a more succinct alternative exists 3 False
RS.CLIPPY.UNNECESSARY_FIND_MAP Rust Clippy Lints using `find_map` when a more succinct alternative exists 3 False
RS.CLIPPY.UNNECESSARY_FIRST_THEN_CHECK Rust Clippy Lints calling `.first().is_some()` or `.first().is_none()` instead of `.is_empty()` 3 False
RS.CLIPPY.UNNECESSARY_FOLD Rust Clippy Lints using `fold` when a more succinct alternative exists 3 False
RS.CLIPPY.UNNECESSARY_GET_THEN_CHECK Rust Clippy Lints calling `.get().is_some()` or `.get().is_none()` instead of `.contains()` or `.contains_key()` 3 False
RS.CLIPPY.UNNECESSARY_JOIN Rust Clippy Lints using `.collect::<Vec<String>>().join(\"\")` on an iterator 3 False
RS.CLIPPY.UNNECESSARY_LAZY_EVALUATIONS Rust Clippy Lints using unnecessary lazy evaluation, which can be replaced with simpler eager evaluation 3 False
RS.CLIPPY.UNNECESSARY_LITERAL_BOUND Rust Clippy Lints detects &str that could be &'static str in function return types 3 False
RS.CLIPPY.UNNECESSARY_LITERAL_UNWRAP Rust Clippy Lints using `unwrap()` related calls on `Result` and `Option` constructors 3 False
RS.CLIPPY.UNNECESSARY_MAP_ON_CONSTRUCTOR Rust Clippy Lints using `map`/`map_err` on `Option` or `Result` constructors 3 False
RS.CLIPPY.UNNECESSARY_MAP_OR Rust Clippy Lints reduce unnecessary calls to `.map_or(bool, …)` 3 False
RS.CLIPPY.UNNECESSARY_MIN_OR_MAX Rust Clippy Lints using 'min()/max()' when there is no need for it 3 False
RS.CLIPPY.UNNECESSARY_MUT_PASSED Rust Clippy Lints an argument passed as a mutable reference although the callee only demands an immutable reference 3 False
RS.CLIPPY.UNNECESSARY_OPERATION Rust Clippy Lints outer expressions with no effect 3 False
RS.CLIPPY.UNNECESSARY_OWNED_EMPTY_STRINGS Rust Clippy Lints detects cases of references to owned empty strings being passed as an argument to a function expecting `&str` 3 False
RS.CLIPPY.UNNECESSARY_RESULT_MAP_OR_ELSE Rust Clippy Lints making no use of the \"map closure\" when calling `.map_or_else(|err| handle_error(err), |n| n)` 3 False
RS.CLIPPY.UNNECESSARY_SAFETY_COMMENT Rust Clippy Lints annotating safe code with a safety comment 3 False
RS.CLIPPY.UNNECESSARY_SAFETY_DOC Rust Clippy Lints `pub fn` or `pub trait` with `# Safety` docs 3 False
RS.CLIPPY.UNNECESSARY_SELF_IMPORTS Rust Clippy Lints imports ending in `::{self}`, which can be omitted 3 False
RS.CLIPPY.UNNECESSARY_SEMICOLON Rust Clippy Lints unnecessary semicolon after expression returning `()` 3 False
RS.CLIPPY.UNNECESSARY_SORT_BY Rust Clippy Lints Use of `Vec::sort_by` when `Vec::sort_by_key` or `Vec::sort` would be clearer 3 False
RS.CLIPPY.UNNECESSARY_STRUCT_INITIALIZATION Rust Clippy Lints struct built from a base that can be written mode concisely 3 False
RS.CLIPPY.UNNECESSARY_TO_OWNED Rust Clippy Lints unnecessary calls to `to_owned`-like functions 3 False
RS.CLIPPY.UNNECESSARY_UNWRAP Rust Clippy Lints checks for calls of `unwrap[_err]()` that cannot fail 3 False
RS.CLIPPY.UNNECESSARY_WRAPS Rust Clippy Lints functions that only return `Ok` or `Some` 3 False
RS.CLIPPY.UNNEEDED_FIELD_PATTERN Rust Clippy Lints struct fields bound to a wildcard instead of using `..` 3 False
RS.CLIPPY.UNNEEDED_STRUCT_PATTERN Rust Clippy Lints using struct pattern to match against unit variant 3 False
RS.CLIPPY.UNNEEDED_WILDCARD_PATTERN Rust Clippy Lints tuple patterns with a wildcard pattern (`_`) is next to a rest pattern (`..`) 3 False
RS.CLIPPY.UNNESTED_OR_PATTERNS Rust Clippy Lints unnested or-patterns, e.g., `Foo(Bar) | Foo(Baz) instead of `Foo(Bar | Baz)` 3 False
RS.CLIPPY.UNREACHABLE Rust Clippy Lints usage of the `unreachable!` macro 3 False
RS.CLIPPY.UNREADABLE_LITERAL Rust Clippy Lints long literal without underscores 3 False
RS.CLIPPY.UNSAFE_DERIVE_DESERIALIZE Rust Clippy Lints deriving `serde::Deserialize` on a type that has methods using `unsafe` 3 False
RS.CLIPPY.UNSAFE_REMOVED_FROM_NAME Rust Clippy Lints `unsafe` removed from API names on import 3 False
RS.CLIPPY.UNSEPARATED_LITERAL_SUFFIX Rust Clippy Lints literals whose suffix is not separated by an underscore 3 False
RS.CLIPPY.UNSOUND_COLLECTION_TRANSMUTE Rust Clippy Lints transmute between collections of layout-incompatible types 3 False
RS.CLIPPY.UNUSED_ASYNC Rust Clippy Lints finds async functions with no await statements 3 False
RS.CLIPPY.UNUSED_ENUMERATE_INDEX Rust Clippy Lints using `.enumerate()` and immediately dropping the index 3 False
RS.CLIPPY.UNUSED_FORMAT_SPECS Rust Clippy Lints use of a format specifier that has no effect 3 False
RS.CLIPPY.UNUSED_IO_AMOUNT Rust Clippy Lints unused written/read amount 3 False
RS.CLIPPY.UNUSED_PEEKABLE Rust Clippy Lints creating a peekable iterator without using any of its methods 3 False
RS.CLIPPY.UNUSED_RESULT_OK Rust Clippy Lints Use of `.ok()` to silence `Result`'s `#[must_use]` is misleading. Use `let _ =` instead. 3 False
RS.CLIPPY.UNUSED_ROUNDING Rust Clippy Lints Uselessly rounding a whole number floating-point literal 3 False
RS.CLIPPY.UNUSED_SELF Rust Clippy Lints methods that contain a `self` argument but don't use it 3 False
RS.CLIPPY.UNUSED_TRAIT_NAMES Rust Clippy Lints use items that import a trait but only use it anonymously 3 False
RS.CLIPPY.UNUSED_UNIT Rust Clippy Lints needless unit expression 3 False
RS.CLIPPY.UNUSUAL_BYTE_GROUPINGS Rust Clippy Lints binary or hex literals that aren't grouped by four 3 False
RS.CLIPPY.UNWRAP_IN_RESULT Rust Clippy Lints functions of type `Result<..>` or `Option`<...> that contain `expect()` or `unwrap()` 3 False
RS.CLIPPY.UNWRAP_OR_DEFAULT Rust Clippy Lints using `.unwrap_or`, etc. with an argument that constructs a default value 3 False
RS.CLIPPY.UNWRAP_USED Rust Clippy Lints using `.unwrap()` on `Result` or `Option`, which should at least get a better message using `expect()` 3 False
RS.CLIPPY.UPPER_CASE_ACRONYMS Rust Clippy Lints capitalized acronyms are against the naming convention 3 False
RS.CLIPPY.USED_UNDERSCORE_BINDING Rust Clippy Lints using a binding which is prefixed with an underscore 3 False
RS.CLIPPY.USED_UNDERSCORE_ITEMS Rust Clippy Lints using a item which is prefixed with an underscore 3 False
RS.CLIPPY.USELESS_ASREF Rust Clippy Lints using `as_ref` where the types before and after the call are the same 3 False
RS.CLIPPY.USELESS_ATTRIBUTE Rust Clippy Lints use of lint attributes on `extern crate` items 3 False
RS.CLIPPY.USELESS_CONCAT Rust Clippy Lints checks that the `concat` macro has at least two arguments 3 False
RS.CLIPPY.USELESS_CONVERSION Rust Clippy Lints calls to `Into`, `TryInto`, `From`, `TryFrom`, or `IntoIter` which perform useless conversions to the same type 3 False
RS.CLIPPY.USELESS_FORMAT Rust Clippy Lints useless use of `format!` 3 False
RS.CLIPPY.USELESS_LET_IF_SEQ Rust Clippy Lints unidiomatic `let mut` declaration followed by initialization in `if` 3 False
RS.CLIPPY.USELESS_NONZERO_NEW_UNCHECKED Rust Clippy Lints using `NonZero::new_unchecked()` in a `const` context 3 False
RS.CLIPPY.USELESS_TRANSMUTE Rust Clippy Lints transmutes that have the same to and from types or could be a cast/coercion 3 False
RS.CLIPPY.USELESS_VEC Rust Clippy Lints useless `vec!` 3 False
RS.CLIPPY.USE_DEBUG Rust Clippy Lints use of `Debug`-based formatting 3 False
RS.CLIPPY.USE_SELF Rust Clippy Lints unnecessary structure name repetition whereas `Self` is applicable 3 False
RS.CLIPPY.VEC_BOX Rust Clippy Lints usage of `Vec<Box<T>>` where T: Sized, vector elements are already on the heap 3 False
RS.CLIPPY.VEC_INIT_THEN_PUSH Rust Clippy Lints `push` immediately after `Vec` creation 3 False
RS.CLIPPY.VEC_RESIZE_TO_ZERO Rust Clippy Lints emptying a vector with `resize(0, an_int)` instead of `clear()` is probably an argument inversion mistake 3 False
RS.CLIPPY.VERBOSE_BIT_MASK Rust Clippy Lints expressions where a bit mask is less readable than the corresponding method call 3 False
RS.CLIPPY.VERBOSE_FILE_READS Rust Clippy Lints use of `File::read_to_end` or `File::read_to_string` 3 False
RS.CLIPPY.WAKER_CLONE_WAKE Rust Clippy Lints cloning a `Waker` only to wake it 3 False
RS.CLIPPY.WHILE_FLOAT Rust Clippy Lints while loops comparing floating point values 3 False
RS.CLIPPY.WHILE_IMMUTABLE_CONDITION Rust Clippy Lints variables used within while expression are not mutated in the body 3 False
RS.CLIPPY.WHILE_LET_LOOP Rust Clippy Lints `loop { if let { ... } else break }`, which can be written as a `while let` loop 3 False
RS.CLIPPY.WHILE_LET_ON_ITERATOR Rust Clippy Lints using a `while let` loop instead of a for loop on an iterator 3 False
RS.CLIPPY.WILDCARD_DEPENDENCIES Rust Clippy Lints wildcard dependencies being used 3 False
RS.CLIPPY.WILDCARD_ENUM_MATCH_ARM Rust Clippy Lints a wildcard enum match arm using `_` 3 False
RS.CLIPPY.WILDCARD_IMPORTS Rust Clippy Lints lint `use _::*` statements 3 False
RS.CLIPPY.WILDCARD_IN_OR_PATTERNS Rust Clippy Lints a wildcard pattern used with others patterns in same match arm 3 False
RS.CLIPPY.WRITELN_EMPTY_STRING Rust Clippy Lints using `writeln!(buf, \"\")` with an empty string 3 False
RS.CLIPPY.WRITE_LITERAL Rust Clippy Lints writing a literal with a format string 3 False
RS.CLIPPY.WRITE_WITH_NEWLINE Rust Clippy Lints using `write!()` with a format string that ends in a single newline 3 False
RS.CLIPPY.WRONG_SELF_CONVENTION Rust Clippy Lints defining a method named with an established prefix (like \"into_\") that takes `self` with the wrong convention 3 False
RS.CLIPPY.WRONG_TRANSMUTE Rust Clippy Lints transmutes that are confusing at best, undefined behavior at worst and always useless 3 False
RS.CLIPPY.ZERO_DIVIDED_BY_ZERO Rust Clippy Lints usage of `0.0 / 0.0` to obtain NaN instead of `f32::NAN` or `f64::NAN` 3 False
RS.CLIPPY.ZERO_PREFIXED_LITERAL Rust Clippy Lints integer literals starting with `0` 3 False
RS.CLIPPY.ZERO_PTR Rust Clippy Lints using `0 as *{const, mut} T` 3 False
RS.CLIPPY.ZERO_REPEAT_SIDE_EFFECTS Rust Clippy Lints usage of zero-sized initializations of arrays or vecs causing side effects 3 False
RS.CLIPPY.ZERO_SIZED_MAP_VALUES Rust Clippy Lints usage of map with zero-sized value type 3 False
RS.CLIPPY.ZOMBIE_PROCESSES Rust Clippy Lints not waiting on a spawned child process 3 False
RS.CLIPPY.ZST_OFFSET Rust Clippy Lints Check for offset calculations on raw pointers to zero-sized types 3 False