old_contents: import os
  
  # Increasing fd ulimit for tests
  if os.name == "nt":
      import win32file
  
      win32file._setmaxstdio(2048)
  else:
      import resource
  
      resource.setrlimit(resource.RLIMIT_NOFILE, (2048, 2048))
  
new_contents: import os
  
  # Increasing fd ulimit for tests
  if os.name == "nt":
      import win32file
  
      win32file._setmaxstdio(2048)
  else:
      import resource
  
      resource.setrlimit(resource.RLIMIT_NOFILE, (2048, 2048))
  
      nproc_soft, nproc_hard = resource.getrlimit(resource.RLIMIT_NPROC)
      resource.setrlimit(resource.RLIMIT_NPROC, (nproc_hard, nproc_hard))
  
subject: set maximum RLIMIT_NPROC