mac ruby出现错误could not find a temporary directory

今天再用fir组件的时候出现了ruby报错的问题，

could not find a temporary directory
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tmpdir.rb:34:in `tmpdir'
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tmpdir.rb:105:in `tmpdir'
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tmpdir.rb:137:in `create'
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tmpdir.rb:85:in `mktmpdir'

解决方案:

chmod o+t /tmp
chmod 1777 /tmp