diff --git a/01.workspace/heave/src/str/failed_to.rs b/01.workspace/heave/src/str/failed_to.rs
index 34f995a..f13c87a 100644
--- a/01.workspace/heave/src/str/failed_to.rs
+++ b/01.workspace/heave/src/str/failed_to.rs
@@ -54,3 +54,11 @@ impl From<sqlite::FailedTo> for FailedTo {
         Self::SQLite(value)
     }
 }
+
+impl std::error::Error for FailedTo {}
+
+impl std::fmt::Display for FailedTo {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::result::Result<(), std::fmt::Error> {
+        todo!()
+    }
+}