change the todo! in unreachable!

Author: irevoire

src/error.rs

@@ -75,7 +75,7 @@ impl Error {
                 NodeMode::Item => "Item",
                 NodeMode::Tree => "Tree",
                 NodeMode::Metadata => "Metadata",
-                NodeMode::Updated => todo!(),
+                NodeMode::Updated => "Updated",
             },
             item: key.node.item,
         }

src/tests/mod.rs

@@ -77,10 +77,7 @@ impl<D: Distance> fmt::Display for DatabaseHandle<D> {
                         .unwrap();
                     writeln!(f, "updated_item_ids: {updated_item_ids:?}")?;
                 }
-                NodeMode::Metadata => {
-                    panic!()
-                }
-                NodeMode::Updated => todo!(),
+                NodeMode::Updated | NodeMode::Metadata => panic!(),
             }
         }