cactus build fails with Python3

[plum]

Build now fails on the deafult skeleton:
$ cactus build

lib/python3.8/site-packages/cactus/utils/internal.py:36: DeprecationWarning: inspect.getargspec() is deprecated since Python 3.0, use inspect.signature() or inspect.getfullargspec()

[shriekdj]

Build now fails on the deafult skeleton: $ cactus build

lib/python3.8/site-packages/cactus/utils/internal.py:36: DeprecationWarning: inspect.getargspec() is deprecated since Python 3.0, use inspect.signature() or inspect.getfullargspec()

same happened to me

[m-thielen]

This is just a warning. The build should complete nevertheless.

[mcronin0912]

The rebuild function after saving is broken, regardless of the warning messages. Has error: There is no current event loop in thread 'Thread-1'., Retrying in 0.5 seconds...