message: Update README.md minimum supported Rust version to 1.34.2.
diff: @@ -73,7 +73,7 @@ version = "0.25.0"
  ```
  `libpnet` should work on any Rust channel (stable, beta, or nightly), starting
  -with Rust 1.15. When using a nightly version of Rust, you may wish to use pass
  +with Rust 1.34.2. When using a nightly version of Rust, you may wish to use pass
  `--no-default-features --features nightly` to Cargo, to enable faster build
  times.
  