RubyでのGmailの読み込み失敗

google Ruby Snippet

　ruby-gmailってgemで読み込めない＞＜
なんかバグ踏んだ？

ruby-1.9.2-p180 :001 > require 'gmail'
ruby-1.9.2-p180 :002 > gmail = Gmail.new("hogehoge@gmail.com","hogehoge_password")
ruby-1.9.2-p180 :003 > email = gmail.inbox.emails(:all).first
ruby-1.9.2-p180 :004 > email.attachments[0].save_to_file()
IndexError: index 0 outside of array bounds: 0...0
        from /home/hoge/.rvm/gems/ruby-1.9.2-p180/gems/mail-2.3.0/lib/mail/attachments_list.rb:33:in `fetch'
        from /home/hoge/.rvm/gems/ruby-1.9.2-p180/gems/mail-2.3.0/lib/mail/attachments_list.rb:33:in `[]'
        from (irb):4
        from /home/hoge/.rvm/rubies/ruby-1.9.2-p180/bin/irb:16:in `<main>'

　GitHub - dcparker/ruby-gmail: A Rubyesque interface to Gmail. Connect to Gmail via IMAP and manipulate emails and labels. Send email with your Gmail account via SMTP. Includes full support for parsing and generating MIME messages.にある
他のreadmeのサンプルは、まあ動いてるんだが＞＜

P.S. 20110624

　まあメール本文が取りたかったんですが、なんとなくbodyにしたら取れたｗ＜

ruby-1.9.2-p180 :001 > require 'gmail'
ruby-1.9.2-p180 :002 > gmail = Gmail.new("hogehoge@gmail.com","hogehoge_password")
ruby-1.9.2-p180 :003 > gmail.inbox.emails(:all).first
ruby-1.9.2-p180 :004 > email.body

ん〜、ナンテコッタ＋＋

P.S. 20110702

ASCII.jp：いろいろな場所で同じメールを読めるIMAPの仕組みとは？｜電子メールプロトコル再入門