Fix tests

Author: awolverp

tests/test_impls.py

@@ -1497,7 +1497,7 @@ def test_multiple_items_expire_independently(self):
         assert "a" not in c
         assert "b" in c
         assert "c" in c
-        time.sleep(0.1)
+        time.sleep(0.4)
         assert "b" not in c
         assert "c" in c