message: ambulance: the last commit contained a bug
diff: @@ -553,7 +553,7 @@ inline bool operator<(const value_t lhs, const value_t rhs) noexcept
  const auto l_index = static_cast<std::size_t>(lhs);
  const auto r_index = static_cast<std::size_t>(rhs);
  - return (l_index < order.size() and r_index <= order.size() and order[l_index] < order[r_index]);
  + return (l_index < order.size() and r_index < order.size() and order[l_index] < order[r_index]);
  }
  