message: Simplify `pairing_benches`.
diff: -// `clippy` is a code linting tool for improving code quality by catching
  -// common mistakes or strange code patterns. If the `clippy` feature is
  -// provided, it is enabled and all compiler warnings are prohibited.
  -#![cfg_attr(feature = "clippy", deny(warnings))]
  -#![cfg_attr(feature = "clippy", feature(plugin))]
  -#![cfg_attr(feature = "clippy", plugin(clippy))]
  -#![cfg_attr(feature = "clippy", allow(inline_always))]
  -#![cfg_attr(feature = "clippy", allow(too_many_arguments))]
  -#![cfg_attr(feature = "clippy", allow(unreadable_literal))]
  +#![feature(test)]
  -// The compiler provides `test` (on nightly) for benchmarking tools, but
  -// it's hidden behind a feature flag. Enable it if we're testing.
  -#![cfg_attr(test, feature(test))]
  -#[cfg(test)]
  extern crate test;
  -
  extern crate rand;
  -
  extern crate pairing;
  mod bls12_381;
  