Better format errors

src/error.rs

@@ -17,7 +17,7 @@ pub(crate) struct Error {
 
 impl std::fmt::Display for Error {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}", self.kind)?;
+        write!(f, "{}\n", self.kind)?;
         std::fmt::Display::fmt(&self.context, f)
     }
 }