@Jean-Baptiste Lallement I just a moment ago made a try upgrade but no any difference. Probably it's need more time, Your 'fix' to bring up on the web. Actual buggy code do not persist locally, but is downloaded from "http://archive.ubuntu.com/ubuntu/dists/artful-updates/main/dist-upgrader-all/current/artful.tar.gz". Actual buggy code is not the local one, but is downloaded from "http://archive.ubuntu.com/ubuntu/dists/artful-updates/main/dist-upgrader-all/current/artful.tar.gz". What time You think will be need?
@Jean-Baptiste Lallement I just a moment ago made a try upgrade but no any difference. Probably it's need more time, Your 'fix' to bring up on the web. Actual buggy code do not persist locally, but is downloaded from "http:// archive. ubuntu. com/ubuntu/ dists/artful- updates/ main/dist- upgrader- all/current/ artful. tar.gz". Actual buggy code is not the local one, but is downloaded from "http:// archive. ubuntu. com/ubuntu/ dists/artful- updates/ main/dist- upgrader- all/current/ artful. tar.gz".
What time You think will be need?