provision: FAIL: /dev/kvm is missing, completed successfully

https://cros-goldeneye.corp.google.com/chromeos/legoland/builderHistory?buildConfig=nocturne-paladin&buildBranch=master

The builds are red since about 12/19/2018, but there were other failures initially.

Now the failure is
01/07 21:31:35.082 INFO |        server_job:0217| 	GOOD	----	verify.cros	timestamp=1546925495	localtime=Jan 07 21:31:35	
01/07 21:31:35.082 INFO |            repair:0354| Verifying this condition: /dev/kvm should exist if device supports Linux VMs
01/07 21:31:35.090 DEBUG|          ssh_host:0310| Running (ssh) '[ ! -e /dev/kvm -a -f /usr/bin/vm_concierge ]' from '_verify_dependencies|_verify_list|_verify_host|verify|run|run_very_slowly'
01/07 21:31:35.563 ERROR|            repair:0359| Failed: /dev/kvm should exist if device supports Linux VMs
Traceback (most recent call last):
  File "/usr/local/autotest/client/common_lib/hosts/repair.py", line 356, in _verify_host
    self.verify(host)
  File "/usr/local/autotest/server/hosts/cros_repair.py", line 416, in verify
    raise hosts.AutoservVerifyError('/dev/kvm is missing')
AutoservVerifyError: /dev/kvm is missing


This was introduced and should get repaired by a cold reboot, but I guess it isn't working as expected?
https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/1262395/

Have not looked at the details.