rstest 0.4.0

use rustc_version::{version, version_meta, Channel};

fn main() {
    assert!(version().unwrap().major >= 1);

    match version_meta().unwrap().channel {
        Channel::Nightly | Channel::Dev => {
            println!("cargo:rustc-cfg=use_proc_macro_diagnostic");
        }
        _ => {}
    }
}