anyhow

https://github.com/dtolnay/anyhow

This library provides anyhow::Error, a trait object based error type for easy idiomatic error handling in Rust applications.

...Use Anyhow if you don't care what error type your functions return, you just want it to be easy. This is common in application code. Use thiserror if you are a library that wants to design your own dedicated error type(s) so that on failures the caller gets exactly the information that you choose.

via Tom MacWright