1rustc 1.20.0 (f3d6973f4 2017-08-27) 2binary: rustc 3commit-hash: f3d6973f41a7d1fb83029c9c0ceaf0f5d4fd7208 4commit-date: 2017-08-27 5host: x86_64-unknown-linux-gnu 6release: 1.20.0 7LLVM version: 4.0 8