Crate core_error

Traits for working with Error in std-less environments.

Warning

This is a pre-release meant to allow experimentation and integration into the various error handling crates. Please do not use it yet! 1.0.0 is right around the corner.

Usage

This crate provides an Error trait which is identical to the one in std, except for not providing deprecated methods.

This library also exposes two opt-in features:

• std: simply re-export std::error::Error.
• alloc: implement the Error trait on alloc errors (including boxed types).

Libraries using this crate should forward their equivalent features to this library.

Minimum Supported Rust Version (MSRV)

With the default features, this crate works all the way down to 1.0.0. It simply reexport libstd's std::error module.

With no-default-features, the crate only compiles from 1.13.0 onwards (see #11 for more information on this limitation). It auto-detects the Rust version in order to know which error structs to implement the trait on.

Traits

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, and may provide cause chain information: