Enum Error 

pub enum Error {
    InvalidLength(&'static str),
    InvalidEncoding(&'static str),
    ParseFailure(&'static str),
    UnsupportedFeature(&'static str),
    CryptoFailure(&'static str),
    StateError(&'static str),
}

Library-wide error type for length, encoding, parse, state, crypto, and feature failures.

Each variant carries a static diagnostic string suitable for logging and user-facing output.

Variants

InvalidLength(&'static str)

Buffer or value length is outside the allowed range for the operation.

InvalidEncoding(&'static str)

Encoding rules (for example DER or wire format) were violated.

ParseFailure(&'static str)

Parsing failed for structural or syntactic reasons.

UnsupportedFeature(&'static str)

The requested capability is disabled or incompatible with current configuration.

CryptoFailure(&'static str)

A cryptographic primitive returned a verification or computation failure.

StateError(&'static str)

The operation is not valid in the current protocol or object state.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Writes the embedded static message for this error variant into f.

Arguments

• self — Error whose message string is written.
• f — Formatter destination for the human-readable message.

Returns

Ok(()) when the message is written successfully.

Errors

Returns core::fmt::Error if the formatter rejects output (for example, a full buffer).

Panics

This function does not panic.

impl Error for Error

Available on crate feature std only.

Bridges Error into std::error::Error for interoperability when the std feature is enabled.

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for Error

fn eq(&self, other: &Error) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Error

impl StructuralPartialEq for Error