Since build 8043
https://uberchromegw.corp.google.com/i/chromeos.chrome/builders/peach_pit-tot-chrome-pfq-informational/builds/8043

chromeos-golo-server2-89: 38fe25d620385d10 3
  Autotest instance created: cautotest-prod
  TestLabException: Not enough DUTs for board: peach_pit, pool: continuous; required: 4, found: 2
  Traceback (most recent call last):
    File "/usr/local/autotest/site_utils/run_suite.py", line 1989, in _run_task
      return _run_suite(options)
    File "/usr/local/autotest/site_utils/run_suite.py", line 1734, in _run_suite
      options.skip_duts_check)
    File "/usr/local/autotest/site_utils/diagnosis_utils.py", line 336, in check_dut_availability
      hosts=hosts)
  NotEnoughDutsError: Not enough DUTs for board: peach_pit, pool: continuous; required: 4, found: 2
  Will return from run_suite with status: INFRA_FAILURE