message: Fixed required-features bench tests failing when compiled on stable rust.
diff: extern crate cargotest;
  extern crate hamcrest;
  +use cargotest::is_nightly;
  use cargotest::support::{project, execs};
  use hamcrest::{assert_that, existing_file, not};
  @@ -387,6 +388,10 @@ test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured
  #[test]
  fn bench_default_features() {
  + if !is_nightly() {
  + return;
  + }
  +
  let p = project("foo")
  .file("Cargo.toml", r#"
  [project]
  @@ -450,6 +455,10 @@ Consider enabling them by passing e.g. `--features=\"a\"`
  #[test]
  fn bench_arg_features() {
  + if !is_nightly() {
  + return;
  + }
  +
  let p = project("foo")
  .file("Cargo.toml", r#"
  [project]
  @@ -488,6 +497,10 @@ test result: ok. 0 passed; 0 failed; 0 ignored; 1 measured
  #[test]
  fn bench_multiple_required_features() {
  + if !is_nightly() {
  + return;
  + }
  +
  let p = project("foo")
  .file("Cargo.toml", r#"
  [project]
  