Logstash文档示例失败-线程“Logstash:：Runner”中出现异常

我正在从文档中尝试步骤6中的示例：

当我运行logstash时，我得到：

Using milestone 2 input plugin 'tcp'. This plugin should be stable, but if you see strange behavior, please let us know! For more information on plugin milestones, see http://logstash.net/docs/1.2.1/plugin-milestones {:level=>:warn}
You are using a deprecated config setting "type" set in grok. Deprecated settings will continue to work, but are scheduled for removal from logstash in the future. You can achieve this same behavior with the new conditionals, like: `if [type] == "sometype" { grok { ... } }`. If you have any questions about this, please visit the #logstash channel on freenode irc. {:name=>"type", :plugin=><LogStash::Filters::Grok --->, :level=>:warn}
You are using a deprecated config setting "pattern" set in grok. Deprecated settings will continue to work, but are scheduled for removal from logstash in the future.  If you have any questions about this, please visit the #logstash channel on freenode irc. {:name=>"pattern", :plugin=><LogStash::Filters::Grok --->, :level=>:warn}
You are using a deprecated config setting "type" set in date. Deprecated settings will continue to work, but are scheduled for removal from logstash in the future. You can achieve this same behavior with the new conditionals, like: `if [type] == "sometype" { grok { ... } }`. If you have any questions about this, please visit the #logstash channel on freenode irc. {:name=>"type", :plugin=><LogStash::Filters::Date --->, :level=>:warn}
Invalid gemspec in [file:/home/bumjvr/logstash/logstash-1.2.1-flatjar.jar!/META-INF/jruby.home/lib/ruby/gems/shared/specifications/rake-10.0.3.gemspec]: no such file to load -- rubygems/dependency
Exception in thread "LogStash::Runner" org.jruby.exceptions.RaiseException: (LoadError) no such file to load -- base64
        at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:1054)

这是在Ubuntu 13.04和logstash 1.2.1上

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有什么想法吗？！我真的不知道从哪里开始找

我建议使用最新版本的Logstash和文档再试一次

我相信文件已经更正