[jaigouk@j-laptop muddle]$ MERB_ENV=development rake db:automigrate --trace
(in /home/jaigouk/development/muddle)
Loading init file from /home/jaigouk/development/muddle/config/init.rb
Loading /home/jaigouk/development/muddle/config/environments/development.rb
** Invoke db:automigrate (first_time)
** Invoke merb_env (first_time)
** Execute merb_env
Loading init file from /home/jaigouk/development/muddle/config/init.rb
Loading /home/jaigouk/development/muddle/config/environments/development.rb
 ~ Connecting to database...
 ~ Loaded slice 'MerbAuthSlicePassword' ...
 ~ Parent pid: 31397
 ~ Compiling routes...
 ~ Activating slice 'MerbAuthSlicePassword' ...
** Execute db:automigrate
 ~ DROP TABLE IF EXISTS `users`
rake aborted!
Adapter not set: default. Did you forget to setup?
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core/repository.rb:28:in `adapter'
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core/auto_migrations.rb:77:in `auto_migrate_down!'
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core/model.rb:113:in `repository'
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core.rb:181:in `repository'
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core/repository.rb:44:in `scope'
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core.rb:181:in `repository'
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core/model.rb:113:in `repository'
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core/auto_migrations.rb:76:in `auto_migrate_down!'
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core/auto_migrations.rb:26:in `auto_migrate_down'
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core/auto_migrations.rb:25:in `each'
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core/auto_migrations.rb:25:in `auto_migrate_down'
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.8/lib/dm-core/auto_migrations.rb:12:in `auto_migrate'
/usr/lib/ruby/gems/1.8/gems/merb_datamapper-1.0.6.1/lib/merb_datamapper/merbtasks.rb:19
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:617:in `call'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:617:in `execute'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:612:in `each'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:612:in `execute'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:578:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:571:in `invoke_with_call_chain'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:564:in `invoke'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2019:in `invoke_task'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in `each'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2036:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1991:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1970:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2036:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1967:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.3/bin/rake:31
/usr/bin/rake:19:in `load'
/usr/bin/rake:19