我只是（愚蠢地）完成了从 14.04.4 到 16.04 的升级。显然，由于引入 systemd 会破坏 libvirt ……或者我破坏了 aptitude。是否有解决方法或修复方法？我应该回到 14.04 吗？
root@KVM0:~# apt-get install libvirt-bin
Reading package
lists... Done
Building dependency tree
Reading state information... Done
libvirt-bin is already the newest version (1.3.1-1ubuntu10).
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up libvirt-bin (1.3.1-1ubuntu10) ...
Job for libvirt-bin.service failed …