So `quick_main` was useful before Rust [1.26](https://blog.rust-lang.org/2018/05/10/Rust-1.26.html#main-can-return-a-result), but now is there a use case for it? Should we deprecate its use in `0.13`?
So
quick_mainwas useful before Rust 1.26, but now is there a use case for it? Should we deprecate its use in0.13?