Authentication not work with ruby-rack 1.5.2

[Progger]

Host with thin. After authentication I get error:

NoMethodError (undefined method `options' for {:user_id=>1, :ctime=>1380993198, :atime=>1380993198}:Hash):
  /usr/lib/ruby/vendor_ruby/rack/session/abstract/id.rb:329:in `commit_session'
  /usr/lib/ruby/vendor_ruby/rack/session/abstract/id.rb:226:in `context'
  /usr/lib/ruby/vendor_ruby/rack/session/abstract/id.rb:220:in `call'

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.