() {         let script = Script::load_unchecked(r#"         function run()             domain = psl_domain_from_dns_name("example.com")             if domain ~= "example.com" then                  return 'unexpected domain: ' .. domain             end         end         "#).expect("Failed to load script");         script.test().expect("Script failed");     }      #[test]     fn verify_psl_lookup_