class_docstr: Capture stdout and stderr of some span.
  
  This can be used as follows.
  
      captured = {}
      with CaptureOutputAndError(captured):
          # Do stuff.
      # Access captured["out"] and captured["err"].
code: def __init__(self, captured_output_and_error):
      import io
  
      self.output_buffer = io.StringIO()
      self.error_buffer = io.StringIO()
      self.captured_output_and_error = captured_output_and_error
  
imports: import logging
  import os
  import pickle
  import socket
  import sys
  import time
  import numpy
  import pytest
  import ray
  import ray._private.utils
  import ray.cluster_utils
  import ray.util.accelerators
  from ray._private.test_utils import check_call_ray, wait_for_num_actors
  import setproctitle
label_desc: Use image node_id 1 to create a new CaptureOutputAndError object  with example: obj = CaptureOutputAndError(captured_output_and_error)