Loading cache: 100% |###########################################| ETA:  00:00:00
Loaded 1406 entries from dependency cache.
Parsing recipes: 100% |#########################################| Time: 00:00:00
Parsing of 967 .bb files complete (966 cached, 1 parsed). 1406 targets, 28 skipped, 0 masked, 0 errors.
ERROR: Execution of event handler 'sstate_eventhandler2' failed
Traceback (most recent call last):
  File "sstate_eventhandler2(e)", line 15, in sstate_eventhandler2(e=<bb.event.ReachableStamps object at 0x7f6dcec123d0>)
ValueError: need more than 1 value to unpack

ERROR: Command execution failed: Traceback (most recent call last):
  File "/home/ryan/minnowboard/poky/bitbake/lib/bb/command.py", line 101, in runAsyncCommand
    self.cooker.updateCache()
  File "/home/ryan/minnowboard/poky/bitbake/lib/bb/cooker.py", line 1561, in updateCache
    bb.event.fire(event, self.expanded_data)
  File "/home/ryan/minnowboard/poky/bitbake/lib/bb/event.py", line 170, in fire
    fire_class_handlers(event, d)
  File "/home/ryan/minnowboard/poky/bitbake/lib/bb/event.py", line 109, in fire_class_handlers
    execute_handler(name, handler, event, d)
  File "/home/ryan/minnowboard/poky/bitbake/lib/bb/event.py", line 81, in execute_handler
    ret = handler(event)
  File "sstate_eventhandler2(e)", line 15, in sstate_eventhandler2
ValueError: need more than 1 value to unpack

Summary: There were 2 ERROR messages shown, returning a non-zero exit code.