`raise_if_conflicts': Unable to activate activerecord-3.2.2

[Thufir]

I want to do something along the lines of:


http://railscasts.com/episodes/168-feed-parsing


However, I'm getting what appears to be a conflict:

thufir@dur:~/ruby/feedzirra$ 
thufir@dur:~/ruby/feedzirra$ 
thufir@dur:~/ruby/feedzirra$ ruby feed.rb
/home/thufir/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:1626:in `raise_if_conflicts': Unable to activate activerecord-3.2.2, because activesupport-3.1.4 conflicts with activesupport (= 3.2.2) (Gem::LoadError)
	from /home/thufir/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:741:in `activate'
	from /home/thufir/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems.rb:211:in `rescue in try_activate'
	from /home/thufir/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems.rb:208:in `try_activate'
	from /home/thufir/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:59:in `rescue in require'
	from /home/thufir/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:35:in `require'
	from feed.rb:3:in `<main>'
thufir@dur:~/ruby/feedzirra$ 
thufir@dur:~/ruby/feedzirra$ cat feed.rb
require 'rubygems'
require 'feedzirra'
require 'active_record'

feed = Feedzirra::Feed.fetch_and_parse("http://feeds.feedburner.com/PaulDixExplainsNothing")

feed.entries.each do|e|
  puts "...     #{e.title}"
end
thufir@dur:~/ruby/feedzirra$ 
thufir@dur:~/ruby/feedzirra$ ruby --version
ruby 1.9.3p125 (2012-02-16 revision 34643) [i686-linux]
thufir@dur:~/ruby/feedzirra$ 
thufir@dur:~/ruby/feedzirra$ gem --version
1.8.19
thufir@dur:~/ruby/feedzirra$ 
thufir@dur:~/ruby/feedzirra$ 


thanks,

Thufir