UnboundLocalError (local variable 'ch_err' referenced before assignment) in ssh_paramiko_backend.py

[David Tucker]

duplicity 0.8.10fin
Python 3.8.1
from Homebrew on macOS 10.13.6

STDOUT
Attempt 1 failed. UnboundLocalError: local variable 'ch_err' referenced before assignment
Attempt 2 failed. UnboundLocalError: local variable 'ch_err' referenced before assignment
Attempt 3 failed. UnboundLocalError: local variable 'ch_err' referenced before assignment
Attempt 4 failed. UnboundLocalError: local variable 'ch_err' referenced before assignment

STDERR
ssh: Socket exception: Operation timed out (60)
Giving up after 5 attempts. UnboundLocalError: local variable 'ch_err' referenced before assignment

I didn't get a full traceback, but I suspect the issue is here:
https://bazaar.launchpad.net/~duplicity-team/duplicity/0.8-series/view/head:/duplicity/backends/ssh_paramiko_backend.py#L408

[David Tucker (dmtucker)]

This occurred during a call to `duplicity cleanup scp://` (with GPG opts).

[Kenneth Loafman (kenneth-loafman)]

Thanks for the bug report! It helps.