diff --git a/src/provenance.rs b/src/provenance.rs
index dbf8e434..f4aebeab 100644
--- a/src/provenance.rs
+++ b/src/provenance.rs
@@ -186,7 +186,7 @@ mod test_provenances {
         assert!(tables.provenances().row(0).unwrap() == tables.provenances().row(0).unwrap());
         assert!(tables.provenances().row(0).unwrap() != tables.provenances().row(1).unwrap());
 
-        for (row, i) in tables.provenances().iter().zip([0, 1].into_iter()) {
+        for (row, i) in tables.provenances().iter().zip([0, 1]) {
             assert_eq!(row.record(), &records[i]);
             let owned_row = tables.provenances().row(i as i32).unwrap();
             assert_eq!(row, owned_row);
diff --git a/tests/test_trees.rs b/tests/test_trees.rs
index bd049434..2e2a34c6 100644
--- a/tests/test_trees.rs
+++ b/tests/test_trees.rs
@@ -714,9 +714,11 @@ fn test_site_mutation_co_iteration() {
         })
         .collect::<Vec<_>>();
     assert_eq!(contents.len(), 1, "{contents:?}");
-    for t in [(s1, m2)] {
-        assert!(contents.contains(&t), "{contents:?} does not contain {t:?}")
-    }
+    assert!(
+        contents.contains(&(s1, m2)),
+        "{contents:?} does not contain {:?}",
+        (s1, m2)
+    );
 
     for site in ts.site_iter() {
         assert!(site.ancestral_state().is_none());