1  #[macro_use(emit)]
 2  extern crate cfg_rust_features;
 3  
 4  fn main()
 5  {
 6      emit!(vec![
 7          "arbitrary_self_types",
 8          "cfg_version",
 9          "destructuring_assignment",
10          "error_in_core",
11          "inner_deref",
12          "iter_zip",
13          "never_type",
14          "question_mark",
15          "rust1",
16          "step_trait",
17          "unstable_features",
18          "unwrap_infallible",
19      ])
20      .unwrap();
21  }