v0.32.5

src/acl/dynamic.rs

@@ -86,9 +86,12 @@ pub(crate) fn configured_hostnames(config: &Config) -> Result<Vec<String>> {
 }
 
 async fn resolve(name: String) -> (String, Option<Addresses>) {
+    // Keep the returned cache key owned independently of the DNS lookup future.
+    // The lookup result can retain the borrowed hostname until it is dropped.
+    let lookup_name = name.clone();
     let answer = tokio::time::timeout(
         Duration::from_secs(LOOKUP_SECONDS),
-        tokio::net::lookup_host((name.as_str(), 0u16)),
+        tokio::net::lookup_host((lookup_name.as_str(), 0u16)),
     ).await;
     let mut ips = match answer {
         Ok(Ok(sockets)) => sockets.map(|socket| socket.ip()).collect::<Vec<_>>(),