Does maidsafe development still need Rust 1.5 feature level or what is the precise requirement as to the Rust language feature levels?
Announcing Rust 1.4 Oct 29, 2015 • The Rust Core Team Choo choo! The trains have kept rolling, and today, we’re happy to announce the release of Rust 1.4, the newest stable release. Rust is a systems programming language focused on safety, speed, and concurrency. As always, you can install Rust 1.4 from the appropriate page on our website, and check out the detailed release notes for 1.4 on GitHub as well. About 1200 patches were landed in this release.