The problem is obvious in the log:
gpg: can't open '/home/donovan/.gnupg/secring.gpg': Permission denied
You can't get to the gpg data, so gpg fails, then duplicity fails.
The problem is obvious in the log:
gpg: can't open '/home/ donovan/ .gnupg/ secring. gpg': Permission denied
You can't get to the gpg data, so gpg fails, then duplicity fails.