debian-control 0.2.4

use debian_control::lossless::relations::Relations;

fn main() {
    let mut relations: Relations = "python3".parse().unwrap();
    println!("Initial relations: {}", relations);
    
    // This should panic based on the bug report
    relations.ensure_some_version("${misc:Depends}");
    println!("After adding substvar: {}", relations);
}