Traceback (most recent call last):


 "<stdin>", line 1, in <module>
AttributeError: 'Edge' object has no attribute 'get_bar'

Traceback (most recent call last):

 "synth.py", line 110, in <module>
s.shell.run(["nox", "-s", "blacken"], hide_output=False)

 "/tmpfs/src/git/autosynth/env/lib/python3.6/site-packages/synthtool/shell.py", line 33, in run
encoding="utf-8",

 "/home/kbuilder/.pyenv/versions/3.6.1/lib/python3.6/subprocess.py", line 403, in run
with Popen(*popenargs, **kwargs) as process:

 "/home/kbuilder/.pyenv/versions/3.6.1/lib/python3.6/subprocess.py", line 707, in __init__
restore_signals, start_new_session)

 "/home/kbuilder/.pyenv/versions/3.6.1/lib/python3.6/subprocess.py", line 1326, in _execute_child
raise child_exception_type(errno_num, err_msg)
NotFoundError: [Errno 2] No such file or directory: 'nox'