diff --git a/src/dns_cache.rs b/src/dns_cache.rs
index d998e20..68128fd 100644
--- a/src/dns_cache.rs
+++ b/src/dns_cache.rs
@@ -395,8 +395,12 @@ impl DnsCache {
 
         (refresh_due, new_timers)
     }
-    
-    fn find_instance_names<'a>(from: &'a HashMap<String, Vec<DnsRecordBox>>, ty_domain: &str, now: u64) -> Vec<&'a String> {
+
+    fn find_instance_names<'a>(
+        from: &'a HashMap<String, Vec<DnsRecordBox>>,
+        ty_domain: &str,
+        now: u64,
+    ) -> Vec<&'a String> {
         from.get(ty_domain)
             .into_iter()
             .flatten()