Trait Error

pub trait Error: Debug + Display {
    // Provided methods
    fn source(&self) -> Option<&(dyn Error + 'static)>  { ... }
    fn description(&self) -> &str  { ... }
    fn cause(&self) -> Option<&dyn Error>  { ... }
    fn provide<'a>(&'a self, request: &mut Request<'a>) { ... }
}

core A trait representing the basic expectations for error values.

Re-exported from core::error:: .

---

Error is a trait representing the basic expectations for error values, i.e., values of type E in Result<T, E>.

Errors must describe themselves through the Display and Debug traits. Error messages are typically concise lowercase sentences without trailing punctuation:

let err = "NaN".parse::<u32>().unwrap_err();
assert_eq!(err.to_string(), "invalid digit found in string");

Errors may provide cause information. Error::source() is generally used when errors cross “abstraction boundaries”. If one module must report an error that is caused by an error from a lower-level module, it can allow accessing that error via Error::source(). This makes it possible for the high-level module to provide its own errors while also revealing some of the implementation for debugging.

Example

Implementing the Error trait only requires that Debug and Display are implemented too.

use std::error::Error;
use std::fmt;
use std::path::PathBuf;

#[derive(Debug)]
struct ReadConfigError {
    path: PathBuf
}

impl fmt::Display for ReadConfigError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        let path = self.path.display();
        write!(f, "unable to read configuration at {path}")
    }
}

impl Error for ReadConfigError {}

Provided Methods

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

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

Examples

use std::error::Error;
use std::fmt;

#[derive(Debug)]
struct SuperError {
    source: SuperErrorSideKick,
}

impl fmt::Display for SuperError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "SuperError is here!")
    }
}

impl Error for SuperError {
    fn source(&self) -> Option<&(dyn Error + 'static)> {
        Some(&self.source)
    }
}

#[derive(Debug)]
struct SuperErrorSideKick;

impl fmt::Display for SuperErrorSideKick {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "SuperErrorSideKick is here!")
    }
}

impl Error for SuperErrorSideKick {}

fn get_super_error() -> Result<(), SuperError> {
    Err(SuperError { source: SuperErrorSideKick })
}

fn main() {
    match get_super_error() {
        Err(e) => {
            println!("Error: {e}");
            println!("Caused by: {}", e.source().unwrap());
        }
        _ => println!("No error"),
    }
}

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

if let Err(e) = "xc".parse::<u32>() {
    // Print `e` itself, no need for description().
    eprintln!("Error: {e}");
}

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.

Used in conjunction with Request::provide_value and Request::provide_ref to extract references to member variables from dyn Error trait objects.

Example

#![feature(error_generic_member_access)]
use core::fmt;
use core::error::{request_ref, Request};

#[derive(Debug)]
enum MyLittleTeaPot {
    Empty,
}

#[derive(Debug)]
struct MyBacktrace {
    // ...
}

impl MyBacktrace {
    fn new() -> MyBacktrace {
        // ...
    }
}

#[derive(Debug)]
struct Error {
    backtrace: MyBacktrace,
}

impl fmt::Display for Error {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "Example Error")
    }
}

impl std::error::Error for Error {
    fn provide<'a>(&'a self, request: &mut Request<'a>) {
        request
            .provide_ref::<MyBacktrace>(&self.backtrace);
    }
}

fn main() {
    let backtrace = MyBacktrace::new();
    let error = Error { backtrace };
    let dyn_error = &error as &dyn std::error::Error;
    let backtrace_ref = request_ref::<MyBacktrace>(dyn_error).unwrap();

    assert!(core::ptr::eq(&error.backtrace, backtrace_ref));
    assert!(request_ref::<MyLittleTeaPot>(dyn_error).is_none());
}

Implementations

impl dyn Error

pub fn is<T>(&self) -> bool

where T: Error + 'static,

Returns true if the inner type is the same as T.

pub fn downcast_ref<T>(&self) -> Option<&T>

where T: Error + 'static,

Returns some reference to the inner value if it is of type T, or None if it isn’t.

pub fn downcast_mut<T>(&mut self) -> Option<&mut T>

where T: Error + 'static,

Returns some mutable reference to the inner value if it is of type T, or None if it isn’t.

impl dyn Error + Send

pub fn is<T>(&self) -> bool

where T: Error + 'static,

Forwards to the method defined on the type dyn Error.

pub fn downcast_ref<T>(&self) -> Option<&T>

where T: Error + 'static,

Forwards to the method defined on the type dyn Error.

pub fn downcast_mut<T>(&mut self) -> Option<&mut T>

where T: Error + 'static,

Forwards to the method defined on the type dyn Error.

impl dyn Error + Send + Sync

pub fn is<T>(&self) -> bool

where T: Error + 'static,

Forwards to the method defined on the type dyn Error.

pub fn downcast_ref<T>(&self) -> Option<&T>

where T: Error + 'static,

Forwards to the method defined on the type dyn Error.

pub fn downcast_mut<T>(&mut self) -> Option<&mut T>

where T: Error + 'static,

Forwards to the method defined on the type dyn Error.

impl dyn Error

pub fn sources(&self) -> Source<'_>

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

Returns an iterator starting with the current error and continuing with recursively calling Error::source.

If you want to omit the current error and only use its sources, use skip(1).

Examples

#![feature(error_iter)]
use std::error::Error;
use std::fmt;

#[derive(Debug)]
struct A;

#[derive(Debug)]
struct B(Option<Box<dyn Error + 'static>>);

impl fmt::Display for A {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "A")
    }
}

impl fmt::Display for B {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "B")
    }
}

impl Error for A {}

impl Error for B {
    fn source(&self) -> Option<&(dyn Error + 'static)> {
        self.0.as_ref().map(|e| e.as_ref())
    }
}

let b = B(Some(Box::new(A)));

// let err : Box<Error> = b.into(); // or
let err = &b as &(dyn Error);

let mut iter = err.sources();

assert_eq!("B".to_string(), iter.next().unwrap().to_string());
assert_eq!("A".to_string(), iter.next().unwrap().to_string());
assert!(iter.next().is_none());
assert!(iter.next().is_none());

impl dyn Error

pub fn downcast<T>(self: Box<dyn Error>) -> Result<Box<T>, Box<dyn Error>>

where T: Error + 'static,

Attempts to downcast the box to a concrete type.

impl dyn Error + Send

pub fn downcast<T>( self: Box<dyn Error + Send>, ) -> Result<Box<T>, Box<dyn Error + Send>>

where T: Error + 'static,

Attempts to downcast the box to a concrete type.

impl dyn Error + Send + Sync

pub fn downcast<T>( self: Box<dyn Error + Send + Sync>, ) -> Result<Box<T>, Box<dyn Error + Send + Sync>>

where T: Error + 'static,

Attempts to downcast the box to a concrete type.

Trait Implementations

impl<'a> From<&str> for Box<dyn Error + 'a>

fn from(err: &str) -> Box<dyn Error + 'a>

Converts a str into a box of dyn Error.

Examples

use std::error::Error;
use std::mem;

let a_str_error = "a str error";
let a_boxed_error = Box::<dyn Error>::from(a_str_error);
assert!(mem::size_of::<Box<dyn Error>>() == mem::size_of_val(&a_boxed_error))

impl<'a> From<&str> for Box<dyn Error + Send + Sync + 'a>

fn from(err: &str) -> Box<dyn Error + Send + Sync + 'a>

Converts a str into a box of dyn Error + Send + Sync.

Examples

use std::error::Error;
use std::mem;

let a_str_error = "a str error";
let a_boxed_error = Box::<dyn Error + Send + Sync>::from(a_str_error);
assert!(
    mem::size_of::<Box<dyn Error + Send + Sync>>() == mem::size_of_val(&a_boxed_error))

impl<'a, 'b> From<Cow<'b, str>> for Box<dyn Error + 'a>

fn from(err: Cow<'b, str>) -> Box<dyn Error + 'a>

Converts a Cow into a box of dyn Error.

Examples

use std::error::Error;
use std::mem;
use std::borrow::Cow;

let a_cow_str_error = Cow::from("a str error");
let a_boxed_error = Box::<dyn Error>::from(a_cow_str_error);
assert!(mem::size_of::<Box<dyn Error>>() == mem::size_of_val(&a_boxed_error))

impl<'a, 'b> From<Cow<'b, str>> for Box<dyn Error + Send + Sync + 'a>

fn from(err: Cow<'b, str>) -> Box<dyn Error + Send + Sync + 'a>

Converts a Cow into a box of dyn Error + Send + Sync.

Examples

use std::error::Error;
use std::mem;
use std::borrow::Cow;

let a_cow_str_error = Cow::from("a str error");
let a_boxed_error = Box::<dyn Error + Send + Sync>::from(a_cow_str_error);
assert!(
    mem::size_of::<Box<dyn Error + Send + Sync>>() == mem::size_of_val(&a_boxed_error))

impl<'a, E> From<E> for Box<dyn Error + 'a>

where E: Error + 'a,

fn from(err: E) -> Box<dyn Error + 'a>

Converts a type of Error into a box of dyn Error.

Examples

use std::error::Error;
use std::fmt;
use std::mem;

#[derive(Debug)]
struct AnError;

impl fmt::Display for AnError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "An error")
    }
}

impl Error for AnError {}

let an_error = AnError;
assert!(0 == mem::size_of_val(&an_error));
let a_boxed_error = Box::<dyn Error>::from(an_error);
assert!(mem::size_of::<Box<dyn Error>>() == mem::size_of_val(&a_boxed_error))

impl<'a, E> From<E> for Box<dyn Error + Send + Sync + 'a>

where E: Error + Send + Sync + 'a,

fn from(err: E) -> Box<dyn Error + Send + Sync + 'a>

Converts a type of Error + Send + Sync into a box of dyn Error + Send + Sync.

Examples

use std::error::Error;
use std::fmt;
use std::mem;

#[derive(Debug)]
struct AnError;

impl fmt::Display for AnError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "An error")
    }
}

impl Error for AnError {}

unsafe impl Send for AnError {}

unsafe impl Sync for AnError {}

let an_error = AnError;
assert!(0 == mem::size_of_val(&an_error));
let a_boxed_error = Box::<dyn Error + Send + Sync>::from(an_error);
assert!(
    mem::size_of::<Box<dyn Error + Send + Sync>>() == mem::size_of_val(&a_boxed_error))

impl<'a> From<String> for Box<dyn Error + 'a>

fn from(str_err: String) -> Box<dyn Error + 'a>

Converts a String into a box of dyn Error.

Examples

use std::error::Error;
use std::mem;

let a_string_error = "a string error".to_string();
let a_boxed_error = Box::<dyn Error>::from(a_string_error);
assert!(mem::size_of::<Box<dyn Error>>() == mem::size_of_val(&a_boxed_error))

impl<'a> From<String> for Box<dyn Error + Send + Sync + 'a>

fn from(err: String) -> Box<dyn Error + Send + Sync + 'a>

Converts a String into a box of dyn Error + Send + Sync.

Examples

use std::error::Error;
use std::mem;

let a_string_error = "a string error".to_string();
let a_boxed_error = Box::<dyn Error + Send + Sync>::from(a_string_error);
assert!(
    mem::size_of::<Box<dyn Error + Send + Sync>>() == mem::size_of_val(&a_boxed_error))

impl Value for dyn Error

fn record(&self, key: &Field, visitor: &mut dyn Visit)

Visits this value with the given Visitor.

impl Value for dyn Error + Send

fn record(&self, key: &Field, visitor: &mut dyn Visit)

Visits this value with the given Visitor.

impl Value for dyn Error + Send + Sync

fn record(&self, key: &Field, visitor: &mut dyn Visit)

Visits this value with the given Visitor.

impl Value for dyn Error + Sync

fn record(&self, key: &Field, visitor: &mut dyn Visit)

Visits this value with the given Visitor.

Implementors

impl !Error for &str

impl Error for FromBytesWithNulError

impl Error for GetDisjointMutError

impl Error for devela::_dep::_std::sync::mpmc::RecvTimeoutError

impl Error for devela::_dep::_std::sync::mpmc::TryRecvError

impl Error for CheckedCastError

impl Error for PodCastError

impl Error for FltkError

impl Error for devela::_dep::flume::RecvError

impl Error for devela::_dep::flume::RecvTimeoutError

impl Error for devela::_dep::flume::TryRecvError

impl Error for devela::_dep::gilrs::Error

impl Error for MappingError

impl Error for DistanceModelError

impl Error for devela::_dep::gilrs::ff::Error

impl Error for devela::_dep::image::ImageError

impl Error for devela::_dep::image::flat::Error

impl Error for devela::_dep::kira::backend::cpal::Error

impl Error for FromFileError

impl Error for PortInfoError

impl Error for devela::_dep::midir::SendError

impl Error for ShaderError

impl Error for BuildStreamError

impl Error for DefaultStreamConfigError

impl Error for DeviceNameError

impl Error for PauseStreamError

impl Error for PlayStreamError

impl Error for devela::_dep::rodio::cpal::StreamError

impl Error for SupportedStreamConfigsError

impl Error for DecoderError

impl Error for devela::_dep::rodio::decoder::symphonia::SeekError

impl Error for DevicesError

impl Error for PlayError

impl Error for devela::_dep::rodio::StreamError

impl Error for devela::_dep::rodio::source::SeekError

impl Error for devela::_dep::sdl2::controller::AddMappingError

impl Error for devela::_dep::sdl2::Error

impl Error for devela::_dep::sdl2::IntegerOrSdlError

impl Error for devela::_dep::sdl2::filesystem::PrefPathError

impl Error for devela::_dep::sdl2::messagebox::ShowMessageError

impl Error for devela::_dep::sdl2::render::TargetRenderError

impl Error for devela::_dep::sdl2::render::TextureValueError

impl Error for devela::_dep::sdl2::render::UpdateTextureError

impl Error for devela::_dep::sdl2::render::UpdateTextureYUVError

impl Error for devela::_dep::sdl2::ttf::FontError

impl Error for devela::_dep::sdl2::ttf::InitError

impl Error for devela::_dep::sdl2::url::OpenUrlError

impl Error for devela::_dep::sdl2::video::WindowBuildError

impl Error for devela::_dep::sdl3::IntegerOrSdlError

impl Error for devela::_dep::sdl3::filesystem::PrefPathError

impl Error for devela::_dep::sdl3::gamepad::AddMappingError

impl Error for devela::_dep::sdl3::messagebox::ShowMessageError

impl Error for devela::_dep::sdl3::render::TargetRenderError

impl Error for devela::_dep::sdl3::render::TextureValueError

impl Error for devela::_dep::sdl3::render::UpdateTextureError

impl Error for devela::_dep::sdl3::render::UpdateTextureYUVError

impl Error for devela::_dep::sdl3::url::OpenUrlError

impl Error for devela::_dep::sdl3::video::WindowBuildError

impl Error for devela::_dep::symphonia::core::errors::Error

impl Error for devela::_dep::tokio::sync::broadcast::error::RecvError

impl Error for devela::_dep::tokio::sync::broadcast::error::TryRecvError

impl Error for TryAcquireError

impl Error for devela::_dep::tokio::sync::mpsc::error::TryRecvError

impl Error for devela::_dep::tokio::sync::oneshot::error::TryRecvError

impl Error for devela::_dep::toml_edit::ser::Error

impl Error for devela::_dep::ureq::Error

impl Error for Infallible

impl Error for NumError

impl Error for InvalidText

impl Error for TextError

Available on crate feature error and text·· only.

impl Error for UiError

impl Error for AllError

Available on crate feature error only.

impl Error for AudioError

Available on crate feature audio only.

impl Error for ColorError

Available on crate feature color only.

impl Error for DataError

Available on crate feature error and data·· only.

impl Error for DataNotEnough

impl Error for DrawError

Available on crate feature draw only.

impl Error for devela::all::FontError

Available on crate feature font only.

impl Error for devela::all::ImageError

Available on crate feature image only.

impl Error for devela::all::LayoutError

Available on crate feature layout only.

impl Error for MediaError

Available on media·· only.

impl Error for MidiError

Available on crate feature midi only.

impl Error for MismatchedBounds

impl Error for NotAvailable

impl Error for PartialSpace

impl Error for SixelError

Available on crate feature alloc and crate feature term and (crate features io or std) and (crate features dep_hashbrown or std) and crate feature image only.

impl Error for TimeError

Available on crate features error and time only.

impl Error for VarError

impl Error for !

impl Error for AllocError

impl Error for TryFromSliceError

impl Error for CharTryFromError

impl Error for DecodeUtf16Error

impl Error for ParseCharError

impl Error for TryFromCharError

impl Error for FromBytesUntilNulError

impl Error for ParseBoolError

impl Error for devela::_core::str::Utf8Error

impl Error for UnorderedKeyError

impl Error for devela::_dep::_alloc::collections::TryReserveError

impl Error for FromVecWithNulError

impl Error for IntoStringError

impl Error for NulError

impl Error for FromUtf8Error

impl Error for FromUtf16Error

impl Error for WriterPanicked

impl Error for ExitStatusError

impl Error for devela::_dep::_std::sync::mpmc::RecvError

impl Error for devela::_dep::_std::time::SystemTimeError

impl Error for devela::_dep::image::error::DecodingError

impl Error for devela::_dep::image::error::EncodingError

impl Error for LimitError

impl Error for ParameterError

impl Error for UnsupportedError

impl Error for devela::_dep::jiff::Error

impl Error for devela::_dep::js_sys::TryFromIntError

impl Error for ResourceLimitReached

impl Error for NonexistentRoute

impl Error for devela::_dep::log::ParseLevelError

impl Error for devela::_dep::midir::InitError

impl Error for UnknownCryptoError

impl Error for DowncastError<'_, '_>

impl Error for DowncastIntoError<'_>

impl Error for PyErr

impl Error for ThreadPoolBuildError

impl Error for devela::_dep::regex_lite::Error

impl Error for BackendSpecificError

impl Error for HostUnavailable

impl Error for devela::_dep::rustix::io::Errno

impl Error for SdlError

impl Error for InvalidTextureAccess

impl Error for devela::_dep::sdl3::Error

impl Error for devela::_dep::serde::de::value::Error

impl Error for devela::_dep::simdutf8::basic::Utf8Error

impl Error for devela::_dep::simdutf8::compat::Utf8Error

impl Error for TryCurrentError

impl Error for devela::_dep::tokio::sync::oneshot::error::RecvError

impl Error for AcquireError

impl Error for devela::_dep::tokio::sync::TryLockError

impl Error for devela::_dep::tokio::sync::watch::error::RecvError

impl Error for JoinError

impl Error for devela::_dep::toml_edit::de::Error

impl Error for DatetimeParseError

impl Error for TomlError

impl Error for SetGlobalDefaultError

impl Error for ParseLevelFilterError

impl Error for devela::_dep::tracing::metadata::ParseLevelError

impl Error for InvalidHeaderName

impl Error for InvalidHeaderValue

impl Error for MaxSizeReached

impl Error for ToStrError

impl Error for InvalidMethod

impl Error for InvalidStatusCode

impl Error for devela::_dep::ureq::http::Error

impl Error for InvalidUri

impl Error for InvalidUriParts

impl Error for InvalidChar

impl Error for InvalidUtf8

impl Error for CompressError

impl Error for DecompressError

impl Error for uuid::error::Error

impl Error for AddrParseError

impl Error for DataOverflow

impl Error for TryFromFloatSecsError

impl Error for ElementNotFound

impl Error for FailedErrorConversion

impl Error for devela::all::FmtError

impl Error for IndexOutOfBounds

impl Error for InvalidAxisLength

impl Error for devela::all::IoError

impl Error for JoinPathsError

impl Error for KeyAlreadyExists

impl Error for SetLoggerError

impl Error for devela::all::MemLayoutError

impl Error for MismatchedCapacity

impl Error for MismatchedDimensions

impl Error for MismatchedIndices

impl Error for NodeEmpty

impl Error for NodeLinkNotSet

impl Error for NodeLinkNotUnique

impl Error for NotEnoughElements

impl Error for NotEnoughSpace

impl Error for NotImplemented

impl Error for NotSupported

impl Error for ParseFloatError

impl Error for ParseIntError

impl Error for PartiallyAdded

impl Error for StripPrefixError

impl Error for BorrowError

impl Error for BorrowMutError

impl Error for devela::all::SystemTimeError

Available on crate feature std only.

impl Error for AccessError

impl Error for devela::all::TryFromIntError

impl Error for ArenaFull

impl Error for ChunkError

impl Error for DecodeError

impl Error for DecodeErrors

impl Error for DecodeSliceError

impl Error for DecodingError

impl Error for EncodeSliceError

impl Error for EncodingError

impl Error for Errno

impl Error for Error

impl Error for Error

impl Error for Error

impl Error for Error

impl Error for FaceParsingError

impl Error for InsertWithKeyError

impl Error for ParseAlphabetError

impl Error for ParseError

impl Error for PeekError

impl Error for PopError

impl Error for RecvError

impl Error for RecvTimeoutError

impl Error for SelectTimeoutError

impl Error for TryGetError

impl Error for TryRecvError

impl Error for TryReserveError

impl Error for TrySelectError

impl<'a> Error for BufReadDecoderError<'a>

impl<'a> Error for DecodeError<'a>

impl<'a, K, V> Error for devela::_dep::_alloc::collections::btree_map::OccupiedError<'a, K, V>

where K: Debug + Ord, V: Debug,

impl<'a, K, V> Error for devela::_dep::_std::collections::hash_map::OccupiedError<'a, K, V>

where K: Debug, V: Debug,

impl<'a, T> Error for &'a T

where T: Error + ?Sized,

impl<E> Error for PlaySoundError<E>

where E: Debug,

impl<E> Error for Box<E>

where E: Error,

impl<I> Error for ExactlyOneError<I>

where I: Iterator + Debug, <I as Iterator>::Item: Debug,

impl<I> Error for InputError<I>

where I: Clone + Debug + Display + Sync + Send + 'static,

impl<I, C> Error for TreeError<I, C>

where I: Debug + Display + Sync + Send + 'static, C: Display + Debug,

impl<L, R> Error for Either<L, R>

where L: Error, R: Error,

Either implements Error if both L and R implement it.

Requires crate feature "use_std"

impl<T> Error for devela::_dep::_std::sync::mpmc::SendTimeoutError<T>

impl<T> Error for devela::_dep::_std::sync::mpmc::TrySendError<T>

impl<T> Error for devela::_dep::flume::SendTimeoutError<T>

impl<T> Error for devela::_dep::flume::TrySendError<T>

impl<T> Error for SetError<T>

where T: Debug,

impl<T> Error for devela::_dep::tokio::sync::mpsc::error::TrySendError<T>

impl<T> Error for devela::all::TryLockError<T>

impl<T> Error for ThinBox<T>

where T: Error + ?Sized,

impl<T> Error for devela::_dep::_alloc::sync::Arc<T>

where T: Error + ?Sized,

impl<T> Error for devela::_dep::_std::sync::mpmc::SendError<T>

impl<T> Error for devela::_dep::flume::SendError<T>

impl<T> Error for ConnectError<T>

impl<T> Error for devela::_dep::tokio::sync::broadcast::error::SendError<T>

where T: Debug,

impl<T> Error for devela::_dep::tokio::sync::mpsc::error::SendError<T>

impl<T> Error for devela::_dep::tokio::sync::watch::error::SendError<T>

impl<T> Error for CapacityError<T>

where T: Any,

Requires features="std".

impl<T> Error for devela::all::Arc<T>

where T: Error + ?Sized,

impl<T> Error for PoisonError<T>

impl<T> Error for PushError<T>

impl<T> Error for SendError<T>

where T: Send,

impl<T> Error for SendTimeoutError<T>

where T: Send,

impl<T> Error for TrySendError<T>

where T: Send,

impl<W> Error for IntoInnerError<W>

where W: Send + Debug,