diff -r e7c059ac6e54 -r a158ff8f84ef rust/hedgewars-server/src/core/indexslab.rs
--- a/rust/hedgewars-server/src/core/indexslab.rs	Mon Sep 30 16:02:39 2019 +0200
+++ b/rust/hedgewars-server/src/core/indexslab.rs	Tue Oct 01 23:48:32 2019 +0300
@@ -41,7 +41,7 @@
         }
     }
 
-    pub fn iter(&self) -> impl Iterator<Item = (usize, &T)> {
+    pub fn iter(&self) -> impl Iterator<Item = (usize, &T)> + Clone {
         self.data
             .iter()
             .enumerate()