Trait otter_api_tests::Error

pub trait Error: Debug + Display {
    fn source(&self) -> Option<&(dyn Error + 'static)> { ... }
    fn backtrace(&self) -> Option<&Backtrace> { ... }
    fn description(&self) -> &str { ... }
    fn cause(&self) -> Option<&dyn 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 chain 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 via source chains.

Provided methods

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

The lower-level source of this error, if any.

Examples

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

#[derive(Debug)]
struct SuperError {
    side: 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.side)
    }
}

#[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 { side: SuperErrorSideKick })
}

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

fn backtrace(&self) -> Option<&Backtrace>

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

Returns a stack backtrace, if available, of where this error occurred.

This function allows inspecting the location, in code, of where an error happened. The returned Backtrace contains information about the stack trace of the OS thread of execution of where the error originated from.

Note that not all errors contain a Backtrace. Also note that a Backtrace may actually be empty. For more information consult the Backtrace type itself.

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

Implementations

impl dyn Error + 'static

pub fn is<T>(&self) -> bool where
    T: 'static + Error, 

Returns true if the boxed type is the same as T

pub fn downcast_ref<T>(&self) -> Option<&T> where
    T: 'static + Error, 

Returns some reference to the boxed 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: 'static + Error, 

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

impl dyn Error + 'static + Send

pub fn is<T>(&self) -> bool where
    T: 'static + Error, 

Forwards to the method defined on the type dyn Error.

pub fn downcast_ref<T>(&self) -> Option<&T> where
    T: 'static + Error, 

Forwards to the method defined on the type dyn Error.

pub fn downcast_mut<T>(&mut self) -> Option<&mut T> where
    T: 'static + Error, 

Forwards to the method defined on the type dyn Error.

impl dyn Error + 'static + Sync + Send

pub fn is<T>(&self) -> bool where
    T: 'static + Error, 

Forwards to the method defined on the type dyn Error.

pub fn downcast_ref<T>(&self) -> Option<&T> where
    T: 'static + Error, 

Forwards to the method defined on the type dyn Error.

pub fn downcast_mut<T>(&mut self) -> Option<&mut T> where
    T: 'static + Error, 

Forwards to the method defined on the type dyn Error.

impl dyn Error + 'static

pub fn downcast<T>(
    self: Box<dyn Error + 'static, Global>
) -> Result<Box<T, Global>, Box<dyn Error + 'static, Global>> where
    T: 'static + Error, 

Attempts to downcast the box to a concrete type.

pub fn chain(&self) -> Chain<'_>

🔬 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.chain();

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 + 'static + Send

pub fn downcast<T>(
    self: Box<dyn Error + 'static + Send, Global>
) -> Result<Box<T, Global>, Box<dyn Error + 'static + Send, Global>> where
    T: 'static + Error, 

Attempts to downcast the box to a concrete type.

impl dyn Error + 'static + Sync + Send

pub fn downcast<T>(
    self: Box<dyn Error + 'static + Sync + Send, Global>
) -> Result<Box<T, Global>, Box<dyn Error + 'static + Sync + Send, Global>> where
    T: 'static + Error, 

Attempts to downcast the box to a concrete type.

Trait Implementations

impl AsRef<dyn Error + 'static + Sync + Send> for Error

pub fn as_ref(&self) -> &(dyn Error + 'static + Sync + Send)

Performs the conversion.

impl AsRef<dyn Error + 'static> for Error

pub fn as_ref(&self) -> &(dyn Error + 'static)

Performs the conversion.

impl Value for dyn Error + 'static

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

Visits this value with the given Visitor.

Implementations on Foreign Types

impl Error for !

impl Error for NulError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for FromUtf16Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for StripPrefixError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl<T> Error for Box<T, Global> where
    T: Error, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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

impl Error for ExitStatusError

impl Error for FromUtf8Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl<T> Error for PoisonError<T>

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl<T> Error for TryLockError<T>

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl Error for TryReserveError

impl Error for IntoStringError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

impl Error for FromVecWithNulError

impl Error for FromBytesWithNulError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for AddrParseError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl<'a, T> Error for &'a T where
    T: Error + ?Sized, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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

pub fn backtrace(&self) -> Option<&Backtrace>

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

impl Error for Broken

impl Error for Error

impl Error for SenderError

impl Error for OpenSSHKeyError

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

impl Error for OutOfRangeError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for ParseError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for UnicodeWordError

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for CaseFoldError

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

impl Error for Error

impl Error for ParseColorError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl<T> Error for SendError<T> where
    T: Any, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl<T> Error for TrySendError<T> where
    T: Any, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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

impl Error for ValueReadError

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

impl<'a> Error for DecodeStringError<'a>

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

impl Error for ValueWriteError

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

impl Error for NumValueReadError

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

impl Error for CompressError

impl Error for DecompressError

impl Error for Error

impl Error for WeightedError

impl Error for ReadError

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

impl Error for BernoulliError

impl Error for Error

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

impl Error for Error

impl Error for ParseError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for ParseError

impl Error for Errors

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for StreamError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for LimitError

impl Error for ImageError

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

impl Error for ParameterError

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

impl Error for UnsupportedError

impl Error for DecodingError

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

impl Error for Error

impl Error for EncodingError

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

impl Error for Error

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

impl Error for EncodingError

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl Error for DecodingError

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl Error for Error

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

impl<'i, R> Error for Error<R> where
    R: RuleType, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

impl Error for GlobError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Utf8Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for FromUtf8Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

impl Error for GlobError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl Error for PatternError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

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

impl Error for Error

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

impl Error for ParseError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

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

impl Error for ToStrError

impl Error for InvalidMethod

impl Error for InvalidStatusCode

impl Error for Error

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

impl Error for InvalidUriParts

impl Error for InvalidHeaderName

impl Error for InvalidHeaderValue

impl Error for InvalidUri

impl<T> Error for ReuniteError<T> where
    T: Any, 

impl Error for Aborted

impl Error for SpawnError

impl<T> Error for SendError<T> where
    T: Debug, 

impl Error for TryRecvError

impl<T> Error for SendError<T> where
    T: Debug, 

impl<T> Error for TrySendError<T> where
    T: Debug, 

impl Error for TryLockError

impl Error for TryRecvError

impl<T> Error for SendError<T> where
    T: Debug, 

impl Error for JoinError

impl Error for RecvError

impl Error for RecvError

impl<T> Error for SendTimeoutError<T> where
    T: Debug, 

impl Error for ReuniteError

impl Error for AcquireError

impl Error for ReuniteError

impl Error for TryAcquireError

impl Error for Elapsed

impl<T> Error for SetError<T> where
    T: Debug, 

impl Error for RecvError

impl Error for Error

impl Error for RecvError

impl Error for InvalidNameError

impl Error for Error

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

impl Error for ParseLevelError

impl Error for SetGlobalDefaultError

impl Error for ParseLevelFilterError

impl Error for SendError

impl<T> Error for TrySendError<T> where
    T: Any, 

impl Error for Canceled

impl Error for TryRecvError

impl Error for Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

impl Error for LinesCodecError

impl Error for AnyDelimiterCodecError

impl Error for LengthDelimitedCodecError

impl Error for Error

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

impl<S> Error for HandshakeError<S> where
    S: Any + Debug, 

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

impl Error for Error

impl Error for X509VerifyResult

impl Error for ErrorStack

impl Error for Error

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

impl<S> Error for HandshakeError<S> where
    S: Debug, 

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

impl Error for FromStrError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Error

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

The lower-level cause of this error, in the case of a Utf8 error.

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

The lower-level source of this error, in the case of a Utf8 error.

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for AddrParseError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for PrefixLenError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

Implementors

impl Error for LoadError

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

impl Error for AccountsSaveError

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

impl Error for ApiPieceOpError

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

impl Error for InternalError

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

impl Error for InvalidScopedName

impl Error for LibraryLoadError

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

impl Error for MgmtChannelReadError

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

impl Error for MgmtChannelWriteError

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

impl Error for OnlineError

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

impl Error for PieceOpError

impl Error for PieceOpErrorPartiallyProcessed

impl Error for SVGProcessingError

impl Error for SpecError

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

impl Error for VarError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for FlexiLoggerError

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

impl Error for DecodeError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl Error for RoundingError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for otter_api_tests::imports::nix::Error

impl Error for Errno

impl Error for otter_api_tests::imports::regex::Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for otter_api_tests::imports::rmp_serde::decode::Error

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

impl Error for otter_api_tests::imports::rmp_serde::encode::Error

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

impl Error for otter_api_tests::imports::toml::ser::Error

impl Error for RecvTimeoutError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for otter_api_tests::mpsc::TryRecvError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Infallible

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for MgmtError

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

impl Error for SubstErrorKind

impl Error for ZipError

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

impl Error for KeyError

impl Error for otter_api_tests::shapelib::toml_de::Error

impl Error for Void

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl Error for LogicError

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

impl Error for AuthorisationError

impl Error for NotBundle

impl Error for JoinPathsError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for otter_api_tests::fmt::Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for PosCFromIteratorError

impl Error for otter_api_tests::imports::chrono::ParseError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for InvalidOutputSize

impl Error for AllocError

impl Error for LayoutError

impl Error for TryFromSliceError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for BorrowError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for BorrowMutError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for CharTryFromError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for DecodeUtf16Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for ParseCharError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for ParseFloatError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for ParseIntError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for otter_api_tests::imports::glob::GlobError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl Error for otter_api_tests::imports::glob::PatternError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for otter_api_tests::imports::log::ParseLevelError

impl Error for SetLoggerError

impl Error for FloatIsNan

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for otter_api_tests::imports::otter_base::imports::serde::de::value::Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for otter_api_tests::imports::toml::de::Error

impl Error for DatetimeParseError

impl Error for otter_api_tests::io::Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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

impl Error for otter_api_tests::mpsc::RecvError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for otter_api_tests::serde_json::Error

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

impl Error for AuthKeysManipError

impl Error for CoordinateOverflow

impl Error for SubstError

impl Error for TryFromIntError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for ParseBoolError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for otter_api_tests::str::Utf8Error

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for AccountNotFound

impl Error for BadAssetUrlToken

impl Error for otter_api_tests::ExitStatusError

impl Error for FooParseError

impl Error for GameBeingDestroyed

impl Error for InternalLogicError

impl Error for PlayerNotFound

impl Error for TokenDeliveryError

impl Error for UnsupportedColourSpec

impl Error for PathPersistError

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

impl Error for PersistError

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

impl Error for AccessError

impl Error for SystemTimeError

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl Error for Overflow

impl Error for otter_api_tests::zcoord::ParseError

impl Error for RangeBackwards

impl Error for TotallyUnboundedRange

impl Error for InvalidPassword

impl<'a, K, V> Error for otter_api_tests::btree_map::OccupiedError<'a, K, V> where
    K: Debug + Ord,
    V: Debug, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl<'a, K, V> Error for otter_api_tests::hash_map::OccupiedError<'a, K, V> where
    K: Debug,
    V: Debug, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl<E> Error for ParseNotNanError<E> where
    E: 'static + Debug + Error, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

impl<E> Error for Compat<E> where
    E: Display + Debug, 

pub fn description(&self) -> &'static str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl<I> Error for ExactlyOneError<I> where
    I: Iterator + Debug,
    <I as Iterator>::Item: Debug, 

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

Either implements Error if both L and R implement it.

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl<POEPU> Error for ErrorSignaledViaUpdate<POEPU> where
    POEPU: Debug, 

impl<T> Error for otter_api_tests::mpsc::TrySendError<T> where
    T: Send, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl<T> Error for CapacityError<T> where
    T: Any, 

Requires features="std".

impl<T> Error for otter_api_tests::mpsc::SendError<T> where
    T: Send, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

impl<T> Error for Arc<T> where
    T: Error + ?Sized, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

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

pub fn backtrace(&self) -> Option<&Backtrace>

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

impl<T> Error for PosOffTableError<T> where
    T: Debug, 

impl<W> Error for IntoInnerError<W> where
    W: Send + Debug, 

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()