# kirkstone
$ bitbake foo | teee
AttributeError: 'NoneType' object has no attribute 'update'
Traceback (most recent call last):
  File "bitbake/lib/bb/ui/knotty.py", line 736, in main
    cacheprogress.update(event.current)
    ^^^^^^^^^^^^^^^^^^^^

repeated many times until finally:

AttributeError: 'NoneType' object has no attribute 'update'
Traceback (most recent call last):
  File "bitbake/lib/bb/ui/knotty.py", line 741, in main
    cacheprogress.finish()
    ^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'finish'
Exception ignored in: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='utf-8'>
BrokenPipeError: [Errno 32] Broken pipe

# mickledore
$ bitbake qtbase | teee
bash: teee: command not found
[Errno 32] Broken pipeTraceback (most recent call last):
  File "/OE/build/oe-core/bitbake/lib/bb/ui/knotty.py", line 754, in main
    cacheprogress.finish()
    ^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'finish'

seems to be stuck (2 mins now)