1 files changed, 6 insertions, 1 deletions
diff --git a/src/pattern.rs b/src/pattern.rs
index 6795481..2f7166a 100644
--- a/src/pattern.rs
+++ b/src/pattern.rs
@@ -50,9 +50,14 @@ impl<O: Serialize> Pattern<O> {
             &mut frames,
             //&mut output,
         );
-        let (pack, obj) = vm::Packer::new(interp, MAX_CALLS).deserialize(der)?;
+        let (mut packs, obj) = vm::Packer::new(
+            interp,
+            MAX_CALLS,
+        ).deserialize(der)?;
         // this should always be None
         debug_assert!(obj.is_none());
+        debug_assert!(packs.len() == 1);
+        let pack = packs.pop().unwrap();
         let de = De::deserialize(vm::Unpacker::new(pack, MAX_CALLS));
         todo!()
     }