code: def test_postproc_check_fail(mod):
      ctx = _create_context(mod, target=_target())
      sch = tir.Schedule(mod, debug_mask="all")
      assert not ctx.space_generator.postprocs[0].apply(sch)
  
imports: import pytest
  import tvm
  import tvm.testing
  from tvm import meta_schedule
  from tvm import tir
  from tvm.script import tir
  from tvm.target import Target
label_desc: Use image node_id 8 for calling a global function with example usage: test_postproc_check_fail(mod) without return types