Merge pull request #2102 from Kobzol/validate-error

Make validation error messages more verbose

Author: marcoieni

src/validate.rs

@@ -1135,7 +1135,7 @@ where
 {
     for item in iter {
         if let Err(err) = func(item, errors) {
-            errors.push(err.to_string());
+            errors.push(format!("{err:?}"));
         }
     }
 }