use std::fs::File;
 use std::io::Read;
 use std::process::Command;
 
 #[test]
cargo_readme_up_to_date() fn cargo_readme_up_to_date() {
     println!("Checking that `cargo readme > README.md` is up to date...");
 
     let expected = Command::new("cargo")
         .arg("readme")
         .current_dir(env!("CARGO_MANIFEST_DIR"))
         .output()
         .expect("should run `cargo readme` OK")
         .stdout;
     let expected = String::from_utf8_lossy(&expected);
 
     let actual = {
         let mut file = File::open(concat!(env!("CARGO_MANIFEST_DIR"), "/README.md"))
             .expect("should open README.md file");
         let mut s = String::new();
         file.read_to_string(&mut s)
             .expect("should read contents of file to string");
         s
     };
 
     if actual != expected {
         panic!("Run `cargo readme > README.md` to update README.md");
     }
 }