see https://cros-goldeneye.corp.google.com/chromeos/console/viewBuild?version=10019.0.0&channel=dev&type=release

under reef-uni, model sand 1/45 failure
vs reef/sand has 45 passes.

Here are the failed autotest result output https://uberchromeos-server38.corp.google.com/tko/retrieve_logs.cgi?job=/results/147944597-chromeos-test/chromeos2-row3-rack4-host9
under debug/client0.INFO shows the following log outpu:


10/10 06:48:06.427 INFO |      base_sysinfo:0393| ChromeOS BOARD = reef-uni_1.1GHz_4GB
10/10 06:51:42.744 ERROR|platform_Toolchain:0305| Test Executable Stack 1 failures
FAILED:
/usr/sbin/mosys



10/10 06:51:42.829 WARNI|              test:0612| The test failed with the following exception
Traceback (most recent call last):
  File "/usr/local/autotest/common_lib/test.py", line 606, in _exec
    _call_test_function(self.execute, *p_args, **p_dargs)
  File "/usr/local/autotest/common_lib/test.py", line 806, in _call_test_function
    return func(*args, **dargs)
  File "/usr/local/autotest/common_lib/test.py", line 470, in execute
    dargs)
  File "/usr/local/autotest/common_lib/test.py", line 347, in _call_run_once_with_retry
    postprocess_profiled_run, args, dargs)
  File "/usr/local/autotest/common_lib/test.py", line 380, in _call_run_once
    self.run_once(*args, **dargs)
  File "/usr/local/autotest/tests/platform_ToolchainOptions/platform_ToolchainOptions.py", line 308, in run_once
    raise error.TestFail(fail_summary_msg)
TestFail: Test Executable Stack 1 failures