message: Fix printing out errors
  Summary: We printed them out using Debug instead of Display. No idea why... Fix that.
diff: @@ -85,7 +85,7 @@ impl Message {
  code: code(),
  severity: Severity::Error,
  name: "error".to_owned(),
  - description: format!("{:#?}", message),
  + description: format!("{:#}", message),
  }
  }
  _ => Self {
  @@ -94,7 +94,7 @@ impl Message {
  code: code(),
  severity: Severity::Error,
  name: "error".to_owned(),
  - description: format!("{:#?}", x),
  + description: format!("{:#}", x),
  },
  }
  }
  