Moved logging for task worker inside task execution logic

src/domain/subscriber_email.rs

@@ -1,3 +1,5 @@
+use std::fmt::Display;
+
 use validator::Validate;
 
 #[derive(Debug, Validate)]
@@ -22,6 +24,12 @@ impl AsRef<str> for SubscriberEmail {
     }
 }
 
+impl Display for SubscriberEmail {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", self.email)
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::SubscriberEmail;