I’ve just published failure 0.1.1 to crates.io. It’s mostly some incremental improvements to failure that have been suggested since the first release two weeks ago. Improvements to the derive A big change in version 0.1.1 is that the derive can be used without depending on the failure_derive crate separately. All that needs to be done is tagging the extern crate statement with #[macro_use]: // No direct dependency on `failure_derive` #[macro_use] extern crate failure; #[derive(Fail, Debug...