I was also able to recreate this by editing sources.list from xenial to bionic after restoring the apt-clone file.
I did NOT encounter this bug, after restoring the clone file, and then editing sources.list from xenial to bionic and first installing the new version of apt which also pulled in libc among other things.
I was also able to recreate this by editing sources.list from xenial to bionic after restoring the apt-clone file.
I did NOT encounter this bug, after restoring the clone file, and then editing sources.list from xenial to bionic and first installing the new version of apt which also pulled in libc among other things.