RAKE ERROR

when i try to run rake i get an eroor that goes like this:

(in /home/dwain/project/stuad) /home/dwain/project/stuad/config/boot.rb:29:Warning: require_gem is obsolete. Use gem instead. rake aborted! Test failures

(See full trace by running task with --trace)

then i run a trace and i get this:

dwain@personal:~/project/stuad$ rake --trace (in /home/dwain/project/stuad) /home/dwain/project/stuad/config/boot.rb:29:Warning: require_gem is obsolete. Use gem instead. ** Invoke default (first_time) ** Invoke test (first_time) ** Execute test ** Invoke test:units (first_time) ** Invoke db:test:prepare (first_time) ** Invoke environment (first_time) ** Execute environment ** Execute db:test:prepare ** Invoke db:test:clone (first_time) ** Invoke db:schema:dump (first_time) ** Invoke environment ** Execute db:schema:dump ** Invoke db:test:purge (first_time) ** Invoke environment ** Execute db:test:purge ** Execute db:test:clone ** Invoke db:schema:load (first_time) ** Invoke environment ** Execute db:schema:load ** Execute test:units ** Invoke test:functionals (first_time) ** Invoke db:test:prepare ** Execute test:functionals ** Invoke test:integration (first_time) ** Invoke db:test:prepare ** Execute test:integration rake aborted! Test failures /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.1/lib/tasks/testing.rake:50 /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `call' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `execute' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `each' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `execute' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:357:in `invoke' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `synchronize' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `invoke' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:364:in `invoke_prerequisites' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `each' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `send' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `each' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:363:in `invoke_prerequisites' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:356:in `invoke' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `synchronize' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `invoke' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `run' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `each' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `run' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/bin/rake:7 /usr/local/bin/rake:16:in `load' /usr/local/bin/rake:16

can some one help me with a step by step guide because i am new to ruby, so please be careful.