[Bug 1955701] Re: installer crashing wit "Could not restore packages from the previous install"

[Chris Guiver]

Thank you for taking the time to report this bug and helping to make
Ubuntu better. Please execute the following command only once, as it
will automatically gather debugging information, in a terminal:

apport-collect 1955701

When reporting bugs in the future please use apport by using 'ubuntu-
bug' and the name of the package affected. You can learn more about this
functionality at https://wiki.ubuntu.com/ReportingBugs.

Ubiquity log files (package lists with versions, ISO used, etc) were not
included thus making it hard to diagnose/explore, which will be added if
the apport-collect is performed on the box.  After the apport-collect
has been executed, please return the status to 'New'.

** Changed in: ubiquity (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1955701

Title:
  installer crashing wit "Could not restore packages from the previous
  install"

Status in ubiquity package in Ubuntu:
  Incomplete

Bug description:
  installer crashes nearly the end of fresh install of kubuntu 20.04 on lvm with luks.
  install kernel 5.11.0-27 on 20.04.3 LTS

  in syslog the following error messages appear:
  ==============================================
  in run /usr/share/ubiquity/plugininstall.py: 
  #257 in "self.apt_clone_restore()"
  #1655 in apt_clone_restore "subprocess.check_call("

  in /usr/lib/python3.8/subprocess.py
  #364 in check_all raise CalledProcessError(retCode, cmd)

  with subprocess.CalledProcessError: Command '[apt-clone', 'restore-new-distro', '/target/ubuquity-apt-clone/apt-clone-state-kubuntu.tar.gz', 'focal', '--destination', '/target'] returned non-zero exit status 1
  ==============================================

  similar error messages are already filed under the below listed bug
  reports, the main difference being the line numbers in
  plugininstall.py

  1. https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1881829 
  in comment #2

  2. https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1928748
  in https://launchpadlibrarian.net/539276481/UbiquitySyslog.txt

  3. https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1936442
  in https://launchpadlibrarian.net/548660333/UbiquitySyslog.txt
  and in comment #2

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