ERROR \d+ : Master started
ERROR \d+ : Hello, I'm a worker
ERROR \d+ : Hello, I'm a worker
ERROR \d+ : Hello, I'm a worker
ERROR \d+ : Hello, I'm a worker
ERROR \d+ : Worker \d+ died
ERROR \d+ : Worker \d+ died
ERROR \d+ : Worker \d+ died
ERROR \d+ : Worker \d+ died