求助：pidgin rpm版本安装问题

行走之间

本人用Magic Linux 2.1。下了个pidgin-2.2.1-0.src.rpm，安装出现如下提示：

[root@MagicLinux usr]# rpm -ivh pidgin-2.2.1-0.src.rpm
warning: pidgin-2.2.1-0.src.rpm: Header V3 DSA signature: NOKEY, key ID a9464aa9
   1:pidgin                 warning: user machbuild does not exist - using root
warning: group machbuild does not exist - using root
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warning: user machbuild does not exist - using root
warning: group machbuild does not exist - using root

该怎么处理？