Crate errata

Print panics in a sensible fashion.

First, place the following before your main function:

use errata::FallibleExt;

#[errata::catch]
fn main() {
    // ...
}

This unlocks pretty-printing for your error messages. For Option and Result (as long as the Err variant implements Display), you can use fail as a drop-in replacement for expect. You can continue to use unwrap and expect where you don’t expect any errors, and you will continue to get useful debug information just like normal.

If you wish to throw your own errors, see error.

Macros

error

Exits the program cleanly, calling destructors and printing an error message. Uses the same syntax as format.

Traits

FallibleExt

The trait providing fail. Implemented for Option<T> and Result<T, E: Display>.

Attribute Macros

catch

Sets up nice error handling for your Rust function.