Announcing Rust 1.25

The Rust team has announcedthe release of Rust 1.25.0. "The last few releases have beenrelatively minor, but Rust 1.25 contains a bunch of stuff! The first one isstraightforward: we've upgraded to LLVM 6from LLVM 4. This has a number of effects, a major one being a step closerto AVR support." See the releasenotes for details.