This series of articles helps you get through common errors, warnings, and other issues those you might encounter when working with the Rust programming language.
- 1E0382 in Rust: Use of Moved Value Error
- 2E0495 in Rust: Lifetime Conflict for Captured Variables in a Closure
- 3E0277 in Rust: Trait Bound Not Satisfied for the Given Type
- 4E0106 in Rust: Missing Lifetime Specifier Error
- 5E0599 in Rust: No Method Found Matching the Receiver’s Type
- 6E0369 in Rust: No Implementation for an Operator on Certain Types
- 7E0308 in Rust: Mismatched Types Between Expected and Found Values
- 8E0502 in Rust: Cannot Borrow as Mutable Because It Is Also Borrowed as Immutable
- 9E0716 in Rust: Temporary Value Dropped While Borrowed
- 10E0425 in Rust: Undeclared Identifier or Unresolved Name
- 11E0303 in Rust: Pattern Does Not Mention All Fields When Destructuring
- 12E0529 in Rust: Expected Expression, Found Statement or Inconsistent Syntax
- 13E0700 in Rust: Incorrect `async fn` Return Type Causing Lifetime Issues
- 14E0282 in Rust: Type Annotations Needed for Default Type Parameters
- 15E0381 in Rust: Variable Used Before Being Initialized
- 16E0463 in Rust: Cannot Find Crate for a Required Dependency
- 17E0562 in Rust: Pattern Matching Issue with Multiple Possible Interpretations
- 18E0261 in Rust: Unknown Parameter Name in Function Definition
- 19E0464 in Rust: Multiple Crates Link to the Same Library Name
- 20E0560 in Rust: Struct Has No Field with the Given Name
- 21E0567 in Rust: Auto Trait Implementation Error With PhantomData
- 22E0015 in Rust: Calls in Constants Are Limited to Constant Functions
- 23E0152 in Rust: Duplicate Definition of an Enum Variant
- 24E0557 in Rust: Feature Has Been Removed or Is Unavailable in the Stable Channel
- 25E0373 in Rust: Closure May Outlive the Current Function Due to Borrowed References
- 26E0004 in Rust: Non-exhaustive pattern matching leads to a missing arm error
- 27E0005 in Rust: Refutable pattern in a function argument or let binding
- 28E0007 in Rust: Constant function call not allowed in this context
- 29E0010 in Rust: Invalid use of a language item within a constant expression
- 30E0013 in Rust: Constants cannot contain mutable references
- 31E0020 in Rust: Pattern in function must have a type known at compile time
- 32E0023 in Rust: Pattern with incorrect arity or structure for the matched type
- 33E0027 in Rust: Pattern match on a type that does not support destructuring
- 34E0029 in Rust: Only char and numeric types can be cast using `as`
- 35E0030 in Rust: Overloaded operators must have a specified trait signature
- 36E0034 in Rust: Multiple applicable items in scope for the same method name
- 37E0038 in Rust: Trait cannot be made into an object due to unsized or static requirement
- 38E0040 in Rust: Explicit `self` type in trait method not allowed for static dispatch
- 39E0044 in Rust: Foreign items may not have type parameters
- 40E0045 in Rust: Variadic function found: not supported on all Rust platforms
- 41E0046 in Rust: Trait requires an associated function but no default implementation provided
- 42E0049 in Rust: Flexible array size not supported in this context
- 43E0050 in Rust: Method has incorrect type signature for trait implementation
- 44E0053 in Rust: Method return type does not match trait definition
- 45E0054 in Rust: Match arm has incompatible type with the original expression
- 46E0055 in Rust: Cannot move out of a borrowed content in a match guard
- 47E0057 in Rust: Incorrect number of function parameters supplied
- 48E0061 in Rust: This function takes a certain number of arguments but fewer were provided
- 49E0062 in Rust: Field count mismatch when destructuring a struct
- 50E0063 in Rust: Missing fields in struct initializer
- 51E0070 in Rust: Invalid left-hand side expression for an assignment
- 52E0071 in Rust: Expected `struct`, `enum`, or `union` but found something else
- 53E0075 in Rust: Variadic function calls are only supported for C-variadic functions
- 54E0079 in Rust: Enum variant discriminant is not an integer
- 55E0081 in Rust: Discriminant value already used by another variant
- 56E0084 in Rust: Enum variant requires a literal discriminant value
- 57E0087 in Rust: Too many lifetimes provided for a type alias or function
- 58E0088 in Rust: Using types with infinite size is disallowed (recursive types without indirection)
- 59E0090 in Rust: Box type is not permitted in certain constant expressions
- 60E0091 in Rust: Type parameter appears with multiple different lifetimes
- 61E0117 in Rust: No base type found for an inherent implementation
- 62E0120 in Rust: The Drop trait can only be implemented on the same crate’s type
- 63E0121 in Rust: The type placeholder `_` is not allowed within traits or impls
- 64E0124 in Rust: Field is already declared in this struct or variant
- 65E0131 in Rust: Non-exhaustive patterns when matching a type with `#[non_exhaustive]`
- 66E0132 in Rust: Partial initializations of uninitialized structures are not allowed
- 67E0133 in Rust: Dereference of raw pointer in constant expression is not allowed
- 68E0137 in Rust: Multiple `main` functions found in the same crate
- 69E0139 in Rust: Unused must_use attribute on a function or type
- 70E0158 in Rust: Internal compiler error triggered by unimplemented corner case
- 71E0161 in Rust: Cannot move out of borrowed content in function parameter
- 72E0178 in Rust: Conflicting implementations of the same trait for a type
- 73E0182 in Rust: Function declared `const fn` but an unstable feature was used
- 74E0185 in Rust: Method is declared `const` but references a mutable static
- 75E0186 in Rust: Method is declared `const` but performs an operation not allowed in `const fn`
- 76E0195 in Rust: Cannot determine type for the closure expression
- 77E0199 in Rust: Implementing a trait is not allowed for a type defined in another crate if the trait is foreign
- 78E0200 in Rust: Trait requires the Self type to be `Sized`, but it is not
- 79E0201 in Rust: Missing trait bound for an associated type
- 80E0210 in Rust: Trait bounds include itself leading to an infinite cycle
- 81E0214 in Rust: Parenthesized generic parameters not valid in this context
- 82E0225 in Rust: Only auto traits can be used as additional traits in a trait object
- 83E0228 in Rust: Only a single explicit lifetime bound is permitted for an object
- 84E0229 in Rust: Associated type bindings are not allowed here
- 85E0230 in Rust: Missing explicit lifetime bound for a type parameter
- 86E0232 in Rust: This attribute can only be applied to certain item types
- 87E0234 in Rust: No lang item found for the required intrinsic or feature
- 88E0275 in Rust: Overflow evaluating the requirement for an associated type
- 89E0283 in Rust: Cannot satisfy trait bound due to conflicting type requirements
- 90E0311 in Rust: The lifetime does not match the trait’s required lifetime bound
- 91E0312 in Rust: Lifetime name reused within a single function declaration
- 92E0379 in Rust: Trait implementations cannot be declared on trait objects
- 93E0380 in Rust: Main function not found in crate
- 94E0386 in Rust: Cannot assign to data in an `Rc` or `Arc`
- 95E0387 in Rust: `&mut` reference in closure is not allowed to outlive the borrowed data
- 96E0389 in Rust: Groups cannot be followed by a `..` in pattern expansions
- 97E0428 in Rust: A type or module has already been defined in this scope
- 98E0432 in Rust: Unused import for a module or type that is never referenced
- 99E0433 in Rust: Failed to resolve, maybe a missing crate or `use` statement
- 100E0434 in Rust: Multiple applicable items in scope lead to ambiguity
- 101E0435 in Rust: Attempting to use a non-constant value in a constant expression
- 102E0437 in Rust: Unexpected `#` in macro invocation or attribute
- 103E0451 in Rust: Field `foo` of struct `Bar` is private
- 104E0460 in Rust: Found possibly newer version of crate that was not used
- 105E0461 in Rust: Could not find crate with expected name in `extern crate`
- 106E0465 in Rust: Multiple input filenames provided to a single rustc invocation
- 107E0478 in Rust: Lifetime bounds with `'static` conflict with usage in the type
- 108E0483 in Rust: Symbol multiple defined in more than one crate
- 109E0487 in Rust: Lifetimes in function parameter must outlive function body
- 110E0499 in Rust: Mutable borrow occurs while another mutable borrow is active
- 111E0500 in Rust: Borrowing issues with array slices or partial moves
- 112E0503 in Rust: Cannot use an immutable variable when it is also borrowed mutably
- 113E0505 in Rust: Cannot move out of a value because it is borrowed
- 114E0507 in Rust: Moving out of a shared reference is not allowed
- 115E0515 in Rust: Cannot return value referencing temporary variable
- 116E0522 in Rust: Cannot determine a type for the impl trait because the type is never used
- 117E0559 in Rust: Feature `foo` has been declared multiple times
- 118E0569 in Rust: Missing `'` in lifetime or `'static` reference in patterns
- 119E0570 in Rust: Literal out of range for the type in question
- 120E0571 in Rust: Ambiguous `continue` label or missing label reference
- 121E0573 in Rust: Expected a struct or enum but found a module
- 122E0577 in Rust: No variants found for this enum, possibly empty or erroneous
- 123E0594 in Rust: Cannot store dynamic data with an unbounded size in local variables
- 124Warning in Rust: Unused variable detected
- 125Warning in Rust: Dead code: function or module is never used
- 126Warning in Rust: Unreachable code after a return statement
- 127Warning in Rust: Unused import for std::fs
- 128Warning in Rust: Deprecated feature or crate version in Cargo.toml
- 129Issue in Rust: Cargo build fails due to missing native library
- 130Issue in Rust: Debug symbols not generated when compiled with certain flags
- 131Issue in Rust: Performance degradation in debug mode compared to release mode
- 132Issue in Rust: Memory leak from unsafe code block without proper Drop implementation