--- a/rust/hg-cpython/src/dirstate/dirstate_map.rs	Tue Jan 12 22:43:55 2021 +0100
+++ b/rust/hg-cpython/src/dirstate/dirstate_map.rs	Wed Dec 30 00:14:28 2020 +0100
@@ -350,8 +350,8 @@
         {
             dict.set_item(
                 py,
-                key.as_bytes().to_vec(),
-                value.as_bytes().to_vec(),
+                PyBytes::new(py, key.as_bytes()).into_object(),
+                PyBytes::new(py, value.as_bytes()).into_object(),
             )?;
         }
         Ok(dict)