我安装了我朋友推荐的工具包，这就是我尝试升级时不断得到的。安装工具后，我的系统也开始冻结。
ryan1@ryan1:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 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 wpscan (1.1-bt3) ...
WARNING: You don't have /home/ryan1/.gem/ruby/1.9.1/bin in your PATH,
gem executables will not run.
Successfully installed mime-types-2.0
1 gem installed
Installing ri documentation …ruby ×1