code: def test_autoscaler_infeasible(ray_start_cluster_head_with_env_vars):
      script = """
  import ray
  import time
  
  ray.init()
  
  @ray.remote(num_gpus=1)
  def foo():
      pass
  
  x = foo.remote()
  time.sleep(15)
      """
  
      proc = run_string_as_driver_nonblocking(script)
      out_str = proc.stdout.read().decode("ascii")
      err_str = proc.stderr.read().decode("ascii")
  
      print(out_str, err_str)
      assert "Tip:" in out_str
      assert "Error: No available node types can fulfill" in out_str
  
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 8 for calling a global function with example usage: test_autoscaler_infeasible(ray_start_cluster_head_with_env_vars) without return types