Rust 1.0 beta released

The Rust team at Mozilla Research has announced the first beta release of Rust 1.0. The release notes detail a number of important changes, but the announcement adds some additional noteworthy items. "The Beta release also marks a turning point in our approach to stability. During the alpha cycle, the use of unstable APIs and language features was permitted, but triggered a warning. As of the Beta release, the use of unstable APIs will become an error (unless you are using Nightly builds or building from source)." A new continuous-integration infrastructure has also been deployed. The final release is currently expected around May 15.