docs: def WriteClientCrashInfo(self, client_id, crash_info, cursor=None):
      """Writes a new client crash record."""
      query = """
      SET @now = NOW(6);
  
      INSERT INTO client_crash_history (client_id, timestamp, crash_info)
           VALUES (%(client_id)s, @now, %(crash_info)s);
  
      UPDATE clients
         SET last_crash_timestamp = @now
       WHERE client_id = %(client_id)s
      """
  
      params = {
          "client_id": db_utils.ClientIDToInt(client_id),
          "crash_info": crash_info.SerializeToString(),
      }
  
      try:
        cursor.execute(query, params)
      except MySQLdb.IntegrityError as e:
        raise db.UnknownClientError(client_id, cause=e)