Commits
Andy Grove authored and Kouhei Sutou committed 6bfd26a713a
ARROW-3952: [Rust] Upgrade to Rust 2018 Edition See https://hacks.mozilla.org/2018/12/rust-2018-is-here/ for more info. Changes: - Add `edition = "2018"` to Cargo.toml - Change lots of import statements due to changes in module system in Rust 2018 - Remove `mut` from one variable assignment Author: Andy Grove <andygrove73@gmail.com> Closes #3119 from andygrove/ARROW-3952 and squashes the following commits: bfebf9e4 <Andy Grove> cargo fmt bda17699 <Andy Grove> remove unnecessary extern crate statements 048b00cd <Andy Grove> Upgrade to Rust 2018 f843ad46 <Andy Grove> Save c60ac679 <Andy Grove> Specify Rust 2018