cocoapods-1.0.1 编译失败，但0.38.2版本又无法安装

[Hoke]

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/universal-darwin15/rbconfig.rb:213: warning: Insecure world writable dir /usr/local in PATH, mode 040777
Preparing

Analyzing dependencies
[!] The dependency VideoCore (from../../VideoCodec) is not used in any concrete target.

/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.0.1/lib/cocoapods/installer/analyzer.rb:164:in validate_podfile!' /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.0.1/lib/cocoapods/installer/analyzer.rb:62:inanalyze'
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.0.1/lib/cocoapods/installer.rb:227:in analyze' /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.0.1/lib/cocoapods/installer.rb:151:inblock in resolve_dependencies'
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.0.1/lib/cocoapods/user_interface.rb:63:in section' /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.0.1/lib/cocoapods/installer.rb:150:inresolve_dependencies'
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.0.1/lib/cocoapods/installer.rb:114:in install!' /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.0.1/lib/cocoapods/command/install.rb:37:inrun'
/Library/Ruby/Gems/2.0.0/gems/claide-1.0.0/lib/claide/command.rb:334:in run' /Library/Ruby/Gems/2.0.0/gems/cocoapods-1.0.1/lib/cocoapods/command.rb:50:inrun'
/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.0.1/bin/pod:55:in <top (required)>' /usr/local/bin/pod:22:inload'
/usr/local/bin/pod:22:in `

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[!] Your Podfile has had smart quotes sanitised. To avoid issues in the future, you should not use TextEdit for editing it. If you are not using TextEdit, you should turn off smart quotes in your editor of choice.

[ChinaTuring]

I think you have to unintall cocoapods-1.0.1,you can
reference the follow arcitle http://www.meetrue.com/archives/133