fn clone_index() {
    let index = index();
    let maybe_git = |command: &str| {
        let status = Command::new("git")
            .current_dir(&index)
            .args(command.split_whitespace().collect::<Vec<_>>())
            .status()
            .expect("git should be installed");
        status.success()
    };
    let git = |command: &str| {
        if !maybe_git(command) {
            panic!("failed to run git command: {}", command);
        }
    };
    if index.exists() {
        if maybe_git(&format!(
            "rev-parse -q --verify {}^{{commit}}",
            CRATES_IO_COMMIT
        )) {
            // Already fetched.
            return;
        }
    } else {
        fs::create_dir_all(&index).unwrap();
        git("init --bare");
        git("remote add origin https://github.com/rust-lang/crates.io-index");
    }
    git(&format!("fetch origin {}", CRATES_IO_COMMIT));
    git("branch -f master FETCH_HEAD");
}
/// This clones crates.io at a specific point in time into tmp/index.
This clones crates.io at a specific point in time into tmp/index.
This clones crates . io at a specific point in time into tmp / index .
fn clone_index() {
    let index = index();
    let maybe_git = |command: &str| {
        let status = Command::new("git")
            .current_dir(&index)
            .args(command.split_whitespace().collect::<Vec<_>>())
            .status()
            .expect("git should be installed");
        status.success()
    };
    let git = |command: &str| {
        if !maybe_git(command) {
            panic!("failed to run git command: {}", command);
        }
    };
    if index.exists() {
        if maybe_git(&format!(
            "rev-parse -q --verify {}^{{commit}}",
            CRATES_IO_COMMIT
        )) {
            // Already fetched.
            return;
        }
    } else {
        fs::create_dir_all(&index).unwrap();
        git("init --bare");
        git("remote add origin https://github.com/rust-lang/crates.io-index");
    }
    git(&format!("fetch origin {}", CRATES_IO_COMMIT));
    git("branch -f master FETCH_HEAD");
}
fn clone_index ( ) { let index = index ( ) ; let maybe_git = | command : & str | { let status = Command :: new ( " " ) . current_dir ( & index ) . args ( command . split_whitespace ( ) . collect :: < Vec < _ > > ( ) ) . status ( ) . expect ( " " ) ; status . success ( ) } ; let git = | command : & str | { if ! maybe_git ( command ) { panic ! ( " " command ) ; } } ; if index . exists ( ) { if maybe_git ( & format ! ( " " CRATES_IO_COMMIT ) ) { // Already fetched. return ; } } else { fs :: create_dir_all ( & index ) . unwrap ( ) ; git ( " " ) ; git ( " " ) ; } git ( & format ! ( " " CRATES_IO_COMMIT ) ) ; git ( " " ) ; }
This clones crates.io at a specific point in time into tmp/index.
This clones crates . io at a specific point in time into tmp / index .