imports: import faulthandler
  import gc
  import importlib
  import io
  import sys
  import time
  import traceback
  import unittest
  from test import support
  from test.support import threading_helper
  from .filter import match_test
  from .result import State, TestResult, TestStats
  from .runtests import RunTests
  from .save_env import saved_test_environment
  from .setup import setup_tests
  from .testresult import get_test_runner
  from .utils import TestName, clear_caches, remove_testfn, abs_module_name, print_warning
label_desc: Use image node_id 4 for calling a global function with example usage: regrtest_runner(result, test_func, runtests) without return types