Found `self` identifier where `Self` was expectedRS-E1001Found invalid regexRS-E1002Found empty range expressionRS-E1005Found explicit self-assignmentRS-W1013Called `unwrap` on `option_env!` macroRS-W1016Found builtin-type shadowRS-W1028Found possibly mistyped suffixRS-E1009Found similar pattern and replacement in `str::replace`RS-W1094Found potentially incorrect use of `map`RS-W1089Unnecessary iteration to determine length of collectionRS-W1093Possibly missing comma in array expressionRS-W1121Found non UTF-8 literal in `str::from_utf8_unchecked`RS-W1122Found use of deprecated functionRS-W1128Found assertion on boolean constantRS-W1021Unneeded wildcard patternRS-C1004Usage of `print!` macro with newlineRS-C1005Found unneeded field patternRS-C1010This match statement can be collapsed into an if-let statementRS-W1006This match statement can be collapsed into an if-else statementRS-W1007Found if block with identical else blockRS-W1008Found consecutive if expressions with the same conditionRS-W1009Found useless if blockRS-W1010Found `map` with identity functionRS-W1018Found unnecessary `fold`RS-W1022Usage of `fs::create_dir`RS-W1032Extending string with another using `chars`RS-W1095Found incorrect usage of `#[inline]` attributeRS-E1006Found occurrence of `.bytes().count()`RS-P1001Found occurrence of `.skip(..).next()`RS-W1036Array-expression or type initialized with zero lengthRS-W1096Found usage of `split` to check for presence of patternRS-W1097Found redundant unsafe operation: `libc::strlen`RS-W1098Found manual implementation of a `char::is_ascii_*` methodRS-W1099Found obfuscated if-else expressionRS-W1120Syntax ErrorRS-E1000File or directory created with insecure permissionsRS-A1001Audit required: Sensitive cookie without `HttpOnly` attributeRS-A1003Audit required: Sensitive cookie without `secure` attributeRS-A1002Found occurrence of `.step_by(0)`RS-E1003Iterating over `Option` typeRS-E1004Found erasing operationRS-E1007Detected non-octal Unix permissionsRS-E1013Found non-binding `let` on a synchronization lockRS-E1014Attempting to hash a unit valueRS-E1017Setting global write permission on fileRS-S1016Attempting to `transmute` a `ptr` to a `ref`RS-E1018Attempting to `transmute` a `ref` to a `ptr`RS-E1019Attempting to `transmute` a `ptr` to a `ptr` when `ref` transmute is saferRS-E1020Audit required: Found vulnerable content security policy header in HTTP responseRS-A1011Found `.clone()` call on a double referenceRS-W1100Manual implementation of `Error::type_id`RS-S1001Found string literal in `env` functionsRS-W1015Detected conversion between differently sized raw slicesRS-S1013Insufficient RSA key sizeRS-S1005Missing regex anchorRS-S1008Hardcoded temporary file or directory detectedRS-S1003Found usage of cryptographically insecure algorithmRS-S1004Found comparison with `NaN`RS-E1012Found potentially incorrect use of bitwise XORRS-S1007Potentially unsafe usage of `std::fs::remove_dir_all`RS-S1002Detected conversion of `*const` to `*mut`RS-S1011Detected conversion of raw slice to `ptr`RS-S1012Called `mem::forget` or `mem::drop` on a referenceRS-E1010Called `mem::forget` or `mem::drop` on a Copy typeRS-E1011Audit required: Use of `VecDeque::make_contiguous`RS-A1005Audit required: Exposure of sensitive headersRS-A1004Audit required: Use of `Vec::from_iter`RS-A1006Detected invisible unicode characterRS-S1010Comparing unit valuesRS-E1016Found potentially incomplete ASCII rangeRS-W1086Found manual approximation of known floating constantRS-W1207Found binary operation with identical left and right hand sidesRS-E1008Passing unit value as argument to functionRS-E1015Found single-character string literal patternRS-P1100Bind to all interfacesRS-S1006Unused `.enumerate()` or `.zip(..)` itemsRS-W1039Found usage of `crate` in macro definitionRS-W1084Found inaccurate duration calculationRS-W1087Needless iteration over collection that allows indexingRS-W1091Using ordered iteration methods on arbitrarily ordered iteratorRS-W1081Found redundant use of `mem::replace`RS-W1113Redirect to destination from possibly tainted sourceRS-S1009Usage of DoS vulnerable version of `regex` crateRS-S1015Comparing function pointer to `null`RS-W1115Found redundant use of `mem::replace`RS-W1112Found redundant use of `mem::replace`RS-W1114Called `mem::forget` or `mem::drop` on a non-Drop typeRS-E1021Found I/O operation with unhandled return valueRS-E1023Potential path traversal vulnerability due to `actix::NamedFile::open(..)`RS-S1014Found isize/usize enumeration with overflowing valueRS-W1075Insertion of pointer to non-owned reference counted value into vectorRS-W1106Audit required: Found `X-XSS-Protection` header in HTTP responseRS-A1010Cast from function pointer to non-pointer typeRS-W1124Found transmute between a type `T` and `*T` or `&T`RS-E1024Audit required: Function call in `default()` that returns `Self`RS-A1008Found explicitly ignored future valueRS-E1035Audit required: Calling `extend()` on `HashMap`RS-A1009Audit required: Use of large `enum` variantRS-A1007Found transmute between an integer and a `bool`RS-E1025Found transmute between an integer and `NonZero` typeRS-E1026Found transmute between integer literal and `fn` ptrRS-E1027Found transmute between a literal and a `*T` ptrRS-E1028Transmute from `float` or `char` to reference or pointerRS-E1029Transmute from integer type to `char`RS-E1030Found transmute between a numeric type and array or sliceRS-E1031Found transmute between tuple and array or sliceRS-E1032Found `print!` in implementation of `Display`RS-E1034Using `std::mem::size_of_val()` on reference of type rather than type itselfRS-W1123Function with cyclomatic complexity higher than thresholdRS-R1000Found duplicate underscore argumentsRS-W1014Comparing with `""` or `[]` when `.is_empty()` could be usedRS-W1102Found redundant wildcard patternsRS-W1213Found error-prone cast to `u8`RS-W1080Found unnecessary boolean comparisonRS-W1001Potentially unsafe usage of `Arc::get_mut`RS-S1000Use of `FIXME`/`XXX`/`TODO`RS-D1000Unnecessary double parenthesesRS-C1000Found enum variants with similar prefixes or suffixesRS-C1003Empty format string in macro callRS-C1006Found hexadecimal literal with mixed-case letter digitsRS-C1007Found block expression in `if` conditionRS-C1008Matching over booleanRS-C1011Found zero-prefixed literalRS-C1012Found `dbg!` macroRS-C1013Found `#[must_use]` on a unit-returning functionRS-W1011Found empty loop expressionRS-P1000Found double unary negationRS-W1002Found exclusive range where 1 is added to the upper boundRS-W1003Found inclusive range where 1 is subtracted from the upper boundRS-W1004Found trivial or undefined modulus operationRS-W1005Zipping iterator with a range when `enumerate()` would doRS-W1012Found no-op macro callRS-W1017Found `filter_map` with identity functionRS-W1019Found `flat_map` with identity functionRS-W1020Found boolean assert comparisonRS-W1024Dereference of an address is a no-opRS-W1025Found redundant field name in initializerRS-W1026Found trivial regexRS-W1027Found redundant pattern matchingRS-W1029Usage of `expect` followed by a function callRS-W1030Usage of `unwrap_or` followed by a function callRS-W1031Found iterator or string search followed by `is_some` or `is_none`RS-W1033Found occurrence of `Arc<RwLock<HashMap<K, V>>>`RS-P1003Found manual implementation of `Seek::rewind`RS-W1046Found occurrence of `Rc::new("..")`RS-W1062Found usage of `FileType::is_file`RS-A1000Found manual implementation of `find_map`RS-W1210Found `todo!` macroRS-W1065Found unnecessary chain of `map` and `unwrap_or`RS-W1072Found occurrence of `.bytes().nth(..)`RS-P1002Adding single-character string literalRS-P1004Found call to `.trim()` followed by `.split_whitespace()`RS-P1005Unnecessary `collect()` on iterable to `Vec`RS-P1006Found collapsible `.replace(..)` method callsRS-P1007Found redundant static lifetimeRS-W1034Found occurrence of `.inspect(..).for_each(..)`RS-W1035Found wildcard in an or-patternRS-W1037Found usage of `.is_digit(..)` with known radixRS-W1038Found occurrence of `.skip_while(..).next()`RS-W1040Found character comparison using `.chars().last()`RS-W1041Found character comparison using `.chars().next()`RS-W1042Found occurrence of `.to_digit(..).is_some()`RS-W1043Found redundant conversion from `Result::Ok` to `Option`RS-W1044Found manual implementation of `Instant::elapsed`RS-W1045Found potentially ambiguous use of `.splitn(..)`RS-W1047Found occurrence of `.chars().filter(..)`RS-W1049Found occurrence of `&Box<T>` or `&mut Box<T>`RS-W1050Found occurrence of `Default::default()`RS-W1051Found use of `as` to convert literalsRS-W1052Found occurrence of `.nth(0)`RS-W1053Found suspicious loop over a fallibleRS-W1054Found manual implementation of `Result::is_ok`RS-W1055Found occurrence of `Arc<RefCell>` or `Arc<Cell<T>>`RS-W1056Found occurrence of `Arc<Box<T>>`RS-W1057Found occurrence of `Box::new("..")`RS-W1058Found occurrence of `Box<&str>`RS-W1059Found occurrence of `Box<String>`RS-W1060Found occurrence of `Box<Vec<T>>`RS-W1061Found occurrence of `Rc<&str>`RS-W1063Found occurrence of `Rc<String>`RS-W1064Found manual implementation of `.split_once(..)`RS-W1066Found possibly misused `.splitn(..)`RS-W1067Found redundant conversion from `Result::Err` to `Option`RS-W1071Found `fold` over `Option`RS-W1085Found manual implementation of `slice::last`RS-W1088Found unnecessary `.ok()` in pattern matchRS-W1090Manual implementation of `unwrap_or`RS-W1092Found `unwrap_or_else(..)` where `unwrap_or_default()` would sufficeRS-W1104Found occurrence of `vec.resize(0, ..)`RS-W1107Construction of Iterator from single-element collectionRS-W1200Invoking `.map_or()` with identity closureRS-W1201Found unnecessary closureRS-W1202Using `.join(..)` with empty stringRS-W1203Redundant `map(..).filter_map(..)` chainRS-W1204Manual implementation of `try_from_each`RS-W1205Found explicit closure for cloning elementsRS-W1206Found usage of `.repeat(1)`RS-W1208Found redundant `if-else`RS-W1209Redundant `and_then` over `map`RS-W1211Found redundant call to `.count_ones()`RS-W1212Found manual implementation of `cycle`RS-W1215Found `bool::then` returning a literalRS-W1216Found potentially buggy split of string into linesRS-W1217Found redundant `take_while` with `map` callRS-W1214Found manual implementation of `Seek::stream_position`RS-W1082Found needless `Option::take`RS-W1083Found use of `.clone()` in assignmentRS-W1070Found usage of `Box::new(T::default())`RS-P1008Consider using `.clamp(min, max)`, instead of `.max(min).min(max)` or `.min(max).max(min)`RS-W1069Found comparison with `None`RS-W1108Found manual implementation of `stream_position(..)`RS-W1109Found implementation of `default()` outside `Default` traitRS-E1022Found manual implementation of `std::ptr::null()`RS-W1078Found useless lint attributeRS-W1074Found pointer comparison with `ptr::null()`RS-C1014Found nested `format!` macro in a formatting macroRS-W1068Found const declaration of atomic typeRS-W1076Found `while` with constant conditionRS-W1077Empty call to `new()`RS-W1079Found `ref` keyword with `&` referenceRS-W1105Found call to `clone()` on type that implements CopyRS-W1110Found trivial implementation of `default()`RS-W1111Found redundant let-bindingRS-W1218Found redundant `match` over `std::cmp::Ordering`RS-W1219Found redundant `lock()` on `std::io::stdin()`RS-W1220Found empty tuple struct or tuple variantRS-W1125Found usage of `then_some(..).unwrap_or(..)`RS-C1015Undocumented public item in source codeRS-D1001Unnecessary `OnceCell` wrapper around `Mutex`RS-W1135Found manual implementation of `retain()`RS-P1009Found manual implementation of `T::BITS`RS-W1132Found manual implementation of `vec.first()`RS-W1116Found `print!` in implementation of `Debug`RS-W1133Found redundant transmute between the type `T` and `T`RS-W1117Found redundant type annotationRS-C1016Found use of `std::ffi::c_void` ptr in `from_raw`RS-W1118Found manual implementation of `std::ptr::eq` on referencesRS-W1119Found transmute from floating point type to integer typeRS-W1126Found transmute from integer type to floating point typeRS-W1127Found explicitly ignored unit valueRS-W1129Found unnecessary destructure in assignmentRS-W1130Found occurrence of `.filter(..).next()`RS-W1023Found cast of `abs()` to unsigned integer typeRS-W1131Found manual implementation of `eq()` on `OsString`RS-W1134Unnecessary parenthesesRS-C1001Unnecessary braces in `use` statementRS-C1002Found redundant patternRS-W1000
Rust logoRust/
RS-C1008

Found block expression in `if` conditionRS-C1008

Minor severityMinor
Anti-pattern categoryAnti-pattern

Using block expressions as if conditions can confuse readers of this code.

Consider creating a let binding.

Bad practice

// useless block
if { true } { /* ... */ }

// hard-to-read block
if { let x = a(); b } { /* ... */ }

// remove useless braces
if true { /* ... */ }

// create an explicit binding
let res = { 
    let x = a();
    b
};
if res { /* ... */ }