benchmarking

src/error.rs

@@ -9,6 +9,14 @@ use bincode;
 #[derive(Debug)]
 pub struct DBError(pub String);
 
+impl std::fmt::Display for DBError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", self.0)
+    }
+}
+
+impl std::error::Error for DBError {}
+
 impl From<std::io::Error> for DBError {
     fn from(item: std::io::Error) -> Self {
         DBError(item.to_string().clone())