module main

fn rsync(a string, b string) IError {
    return none
}

fn main() {
    options := {
        'a': 'b'
        'b': 'b'
        'c': 'b'
        'd': 'b'
    }

    mut eflag := false
    mut threads := []thread IError{}

    for srv, port in options {
        threads << go rsync(srv, port)
    }

    awt := threads.wait()

    for e in awt {
        if e.str() != 'none' {
            eflag = true
            eprintln(e.str())
        }
    }

    if eflag {
        exit(1)
    }
}