The upgrade failed to calculate as you are using a non-official mirror of the Ubuntu archive.
2020-09-18 12:09:12,978 DEBUG examining: 'deb http://mirrors.bit.edu.cn/ubuntu/ eoan main restricted universe multiverse' 2020-09-18 12:09:12,980 DEBUG entry '# deb http://mirrors.bit.edu.cn/ubuntu/ focal main restricted universe multiverse # 已禁止升级到 focal' was disabled (unknown mirror) 2020-09-18 12:09:12,980 DEBUG examining: 'deb-src http://mirrors.bit.edu.cn/ubuntu/ eoan main restricted universe multiverse' 2020-09-18 12:09:12,981 DEBUG entry '# deb-src http://mirrors.bit.edu.cn/ubuntu/ focal main restricted universe multiverse # 已禁止升级到 focal' was disabled (unknown mirror) 2020-09-18 12:09:12,981 DEBUG examining: 'deb http://mirrors.bit.edu.cn/ubuntu/ eoan-security main restricted universe multiverse' 2020-09-18 12:09:12,982 DEBUG entry '# deb http://mirrors.bit.edu.cn/ubuntu/ eoan-security main restricted universe multiverse # 已禁止升级到 focal' was disabled (unknown mirror) Please try switching mirrors of the Ubuntu archive and try the upgrade again. ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Incomplete ** Summary changed: - broken python dependency + cannot upgrade with mirrors.bit.edu.cn -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896172 Title: cannot upgrade with mirrors.bit.edu.cn To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1896172/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
