The upgrade failed to calculate because you've installed packages from the following PPA:
https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test Please use the tool ppa-purge from the package ppa-purge to remove the PPA and restore the official Ubuntu versions of the package and then try the upgrade again. ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1779728 Title: Could not upgrade ubuntu 16 to 18 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1779728/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
