Full logs: https://build.chromium.org/p/client.webrtc.perf/builders/Android32%20Tests%20%28N%20Nexus6%29/builds/3463/steps/provision_devices/logs/stdio

E    0.012s Main  No available devices to provision.
E    0.013s Main  Local device blacklist: {u'ZY222X5LBG': {u'timestamp': 1504972769.564265, u'reason': u'reboot_timeout'}, u'ZX1G22WWWD': {u'timestamp': 1504972769.565158, u'reason': u'reboot_timeout'}}
E    0.024s Main  Unable to provision local devices.
Traceback (most recent call last):
  File "/b/c/b/Android32_Tests__N_Nexus6_/src/third_party/catapult/devil/devil/android/tools/provision_devices.py", line 640, in main
    wipe=not args.skip_wipe and not args.emulators)
  File "/b/c/b/Android32_Tests__N_Nexus6_/src/third_party/catapult/devil/devil/android/tools/provision_devices.py", line 95, in ProvisionDevices
    devices = script_common.GetDevices(devices, blacklist)
  File "/b/c/b/Android32_Tests__N_Nexus6_/src/third_party/catapult/devil/devil/android/tools/script_common.py", line 47, in GetDevices
    raise device_errors.NoDevicesError()
NoDevicesError: No devices attached.