Trait ErrorCompat 

pub trait ErrorCompat {
    // Provided methods
    fn backtrace(&self) -> Option<&Backtrace> { ... }
    fn iter_chain(&self) -> ChainCompat<'_, '_> 
       where Self: AsErrorSource { ... }
}

Backports changes to the Error trait to versions of Rust lacking them.

It is recommended to always call these methods explicitly so that it is easy to replace usages of this trait when you start supporting a newer version of Rust.

ErrorCompat::backtrace(&error); // Recommended
error.backtrace();              // Discouraged

This trait does not require Error, core::fmt::Debug, or core::fmt::Display. Backtrace access and standard error-chain access are separate capabilities; ErrorCompat::iter_chain additionally requires AsErrorSource.

Provided Methods

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

Returns a Backtrace that may be printed.

fn iter_chain(&self) -> ChainCompat<'_, '_>

where Self: AsErrorSource,

Returns an iterator for traversing the chain of errors, starting with the current error and continuing with recursive calls to Error::source.

To omit the current error and only traverse its sources, use skip(1).

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<'a, E> ErrorCompat for &'a E

where E: ErrorCompat,

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

impl<E> ErrorCompat for Box<E>

where E: ErrorCompat,

Available on crate features alloc only.

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

Implementors

impl ErrorCompat for ConfigFileError

Available on crate feature guide only.

impl ErrorCompat for snafu::guide::examples::backtrace::Error

Available on crate feature guide only.

impl ErrorCompat for snafu::guide::examples::basic::Error

Available on crate feature guide only.

impl ErrorCompat for Whatever

Available on crate features alloc only.

impl ErrorCompat for WhateverLocal

Available on crate features alloc only.