"Recently, docs.rs added a feature that allows crates to opt-out of building on all targets. If you don't need to build on all targets, you can enable this feature to reduce your build times."
Подскажите, Есть строка вида: data.unwrap().unwrap() Как можно упростить конструкцию вида: if let Ok(d1) = data { if let Ok(d2) = d1 { // finally data } }