docstr: Test that apply_effects_tensor with speed + rate does not crush
  
  https://github.com/pytorch/audio/issues/1021
docstr_tok: ["Test","that","apply_effects_tensor","with","speed","+","rate","does","not","crush","https",":","\/\/github.com\/pytorch\/audio\/issues\/1021"]
code: def test_executor(self):
      """Test that apply_effects_tensor with speed + rate does not crush
  
      https://github.com/pytorch/audio/issues/1021
      """
      executor = ProcessPoolExecutor(1)
      futures = [executor.submit(speed, path) for path in self.flist]
      for future in futures:
          future.result()
  
imports: import os
  import platform
  import sys
  from concurrent.futures import ProcessPoolExecutor
  from typing import List, Tuple
  from unittest import skipIf
  import numpy
  import torch
  import torchaudio
  from torchaudio_unittest.common_utils import get_whitenoise, PytorchTestCase, save_wav, skipIfNoSox, TempDirMixin
label_desc: Use image node_id 2 for calling the TestProcessPoolExecutor obj's underlying member method code with example usage: obj.test_executor() without return types