Rails 3 warning

../home/bruparel/.rvm/gems/ruby-1.9.2-head/gems/right_aws-2.0.0/lib/awsbase/support.rb:47:
warning: toplevel constant ClientStatus referenced by
Client::ClientStatus
/home/bruparel/.rvm/gems/ruby-1.9.2-head/gems/right_aws-2.0.0/lib/awsbase/support.rb:47:
warning: toplevel constant Client referenced by ClientComment::Client
/home/bruparel/.rvm/gems/ruby-1.9.2-head/gems/right_aws-2.0.0/lib/awsbase/support.rb:47:
warning: toplevel constant Role referenced by User::Role
/home/bruparel/.rvm/gems/ruby-1.9.2-head/gems/right_aws-2.0.0/lib/awsbase/support.rb:47:
warning: toplevel constant User referenced by ClientComment::User
..../home/bruparel/.rvm/gems/ruby-1.9.2-head/gems/right_aws-2.0.0/lib/awsbase/support.rb:47:
warning: toplevel constant Client referenced by ClientPerm::Client
/home/bruparel/.rvm/gems/ruby-1.9.2-head/gems/right_aws-2.0.0/lib/awsbase/support.rb:47:
warning: toplevel constant User referenced by ClientPerm::User
...../home/bruparel/.rvm/gems/ruby-1.9.2-head/gems/right_aws-2.0.0/lib/awsbase/support.rb:47:
warning: toplevel constant Client referenced by ClientStatus::Client
..../home/bruparel/.rvm/gems/ruby-1.9.2-head/gems/right_aws-2.0.0/lib/awsbase/support.rb:47:
warning: toplevel constant ClientComment referenced by
Client::ClientComment

I am not sure why Rails is giving me these warnings when I run
rake test:units
The tests do pass though.