code: def test_worker_stdout():
      script = """
  import ray
  import sys
  
  ray.init(num_cpus=2)
  
  @ray.remote
  def foo(out_str, err_str):
      print(out_str)
      print(err_str, file=sys.stderr)
  
  ray.get(foo.remote("abc", "def"))
      """
  
      proc = run_string_as_driver_nonblocking(script)
      out_str = proc.stdout.read().decode("ascii")
      err_str = proc.stderr.read().decode("ascii")
  
      out_str = "".join(out_str.splitlines())
      assert out_str.endswith("abc"), out_str
      assert "(foo pid=" in out_str, out_str
      err_str_sec_last = "".join(err_str.split("\n")[-2].splitlines())
      assert err_str_sec_last.endswith("def")
  
imports: import os
  import re
  import signal
  import subprocess
  import sys
  import time
  import pytest
  import ray
  from ray._private.test_utils import run_string_as_driver, run_string_as_driver_nonblocking, wait_for_condition
label_desc: Use image node_id 16 for calling a global function with example usage: test_worker_stdout() without return types