- resp += &format!("{{\"valid_from\": {}, \"expires\": {}, \"max_cache_ttl\": {}, \"verified_rrs\": [",
- verified_rrs.valid_from, verified_rrs.expires, verified_rrs.max_cache_ttl);
+ write!(&mut resp, "{}",
+ format_args!("{{\"valid_from\": {}, \"expires\": {}, \"max_cache_ttl\": {}, \"verified_rrs\": [",
+ verified_rrs.valid_from, verified_rrs.expires, verified_rrs.max_cache_ttl)
+ ).expect("Write to a String shouldn't fail");