If anyone's interested in helping to shape the future of Rust's built-in error-handling story, there's an error handling project group that's been doing great work recently, e.g. the major effort to move the Error trait into libcore ( https://github.com/rust-lang/project-error-handling/issues/3 ) and stabilizing std::backtrace. You can follow along or get involved via the #project-error-handling channel on the Rust zulip: https://rust-lang.zulipchat.com/