message: Fix compliation issue.
diff: @@ -492,7 +492,7 @@ mod tests {
  // Verify that all outcomes are expected.
  for outcome in outcomes {
  assert!(
  - expected_outcomes.iter().any(|&e| e == &outcome),
  + expected_outcomes.iter().any(|e| e == &outcome),
  "unexpected outcome"
  );
  }
  