lakitu-release has been failing the SimpleTestVerify since 1/19 with this stack trace:

Traceback (most recent call last):
  File "bin/ctest", line 293, in <module>
    main()
  File "bin/ctest", line 284, in main
    opts.suite)
  File "bin/ctest", line 210, in RunAUTestHarness
    error_code_ok=True, kill_timeout=10 * 60)
  File "/b/cbuild/internal_master/chromite/lib/cros_build_lib.py", line 593, in RunCommand
    (cmd_result.output, cmd_result.error) = proc.communicate(input)
  File "/usr/lib/python2.7/subprocess.py", line 796, in communicate
    self.wait()
  File "/usr/lib/python2.7/subprocess.py", line 1376, in wait
    pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
  File "/usr/lib/python2.7/subprocess.py", line 476, in _eintr_retry_call
    return func(*args)
  File "/b/cbuild/internal_master/chromite/lib/cros_build_lib.py", line 343, in _KillChildProcess
    raise TerminateRunCommandError('Received signal %i' % signum, cmd_result)
chromite.lib.cros_build_lib.TerminateRunCommandError: return code: 3840; command: /b/cbuild/internal_master/src/platform/crostestutils/au_test_harness/cros_au_test_harness.py '--base_image=/b/cbuild/internal_master/src/build/images/lakitu/latest-cbuildbot/chromiumos_test_image.bin' '--target_image=/b/cbuild/internal_master/src/build/images/lakitu/latest-cbuildbot/chromiumos_test_image.bin' '--board=lakitu' '--type=vm' '--remote=0.0.0.0' --verbose '--jobs=1' '--ssh_private_key=/b/cbuild/internal_master/src/build/images/lakitu/latest-cbuildbot/id_rsa' '--verify_suite_name=smoke' '--test_prefix=SimpleTestVerify' '--test_results_root=/b/cbuild/internal_master/chroot/tmp/cbuildbotnreqn7/test_harness' --no_graphics --whitelist_chrome_crashes
Received signal 15
13:04:30: ERROR: 
!!!VMTests failed!!!

Another warning that I keep seeing in the logs is:

12:14:02: WARNING: HttpsMonitor.send received status 429: {
  "error": {
    "code": 429,
    "message": "Resource has been exhausted (e.g. check quota).",
    "status": "RESOURCE_EXHAUSTED"
  }
}