chore(tvix/cli): iter instead of into_iter for references

This CL removes calling into_iter on a reference, as it will
not move out it's content into resulting iterator.

Change-Id: Ifcc10b7cf33b98453570cbcec3eb82ffaba2ffcb
Signed-off-by: Aaqa Ishtyaq <aaqaishtyaq@gmail.com>
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8126
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI

tvix/cli/src/known_paths.rs

@@ -123,7 +123,7 @@ impl KnownPaths {
         self.insert_path(
             path.to_string(),
             PathKind::Derivation {
-                output_names: outputs.into_iter().map(ToString::to_string).collect(),
+                output_names: outputs.iter().map(ToString::to_string).collect(),
             },
         );
     }