error-stack 0.5.0

A context-aware error-handling library that supports arbitrary attached user data
Documentation 
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//! Example of using `attach` to set a custom exit code. Requires nightly and std feature.

use std::process::{ExitCode, Termination};

use error_stack::{Context, Report};

#[derive(Debug)]
struct CustomError;

impl Context for CustomError {}

impl core::fmt::Display for CustomError {
    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
        f.write_str("Custom Error")
    }
}

fn main() -> ExitCode {
    let report = Report::new(CustomError)
        .attach(ExitCode::from(100))
        .attach_printable("this error has an exit code of 100!");

    report.report()
}