rake db:purgeでエラー

gistfile1.txt

macmini:kowabana tyamuro$ rake db:purge --trace
** Invoke db:purge (first_time)
** Invoke db:remove (first_time)
** Execute db:remove
rm db/development.sqlite3
rm db/test.sqlite3
rm db/schema.rb
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Invoke db:load_config (first_time)
** Execute db:load_config
** Execute db:migrate
** Invoke db:_dump (first_time)
** Execute db:_dump
** Invoke db:schema:dump (first_time)
** Invoke environment
** Invoke db:load_config
** Execute db:schema:dump
** Invoke db:seed (first_time)
** Execute db:seed
** Invoke db:abort_if_pending_migrations (first_time)
** Invoke environment
** Invoke db:load_config
** Execute db:abort_if_pending_migrations
rake aborted!
バリデーションに失敗しました。 Email はすでに存在します。, Email はすでに存在し ます。, 名前 はすでに存在します。
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.8/lib/active_record/validations.rb:56:in `save!'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.8/lib/active_record/attribute_methods/dirty.rb:33:in `save!'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.8/lib/active_record/transactions.rb:246:in `block in save!'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.8/lib/active_record/transactions.rb:295:in `block in with_transaction_returning_status'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.8/lib/active_record/connection_adapters/abstract/database_statements.rb:192:in `transaction'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.8/lib/active_record/transactions.rb:208:in `transaction'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/newrelic_rpm-3.4.1/lib/new_relic/agent/method_tracer.rb:493:in `block in transaction_with_trace_ActiveRecord_self_name_transaction'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/newrelic_rpm-3.4.1/lib/new_relic/agent/method_tracer.rb:242:in `trace_execution_scoped'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/newrelic_rpm-3.4.1/lib/new_relic/agent/method_tracer.rb:488:in `transaction_with_trace_ActiveRecord_self_name_transaction'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.8/lib/active_record/transactions.rb:293:in `with_transaction_returning_status'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.8/lib/active_record/transactions.rb:246:in `save!'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.8/lib/active_record/validations.rb:41:in `create!'
/Users/tyamuro/kowabana/kowabana/db/seeds.rb:4:in `<top (required)>'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:245:in `load'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:245:in `block in load'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:236:in `load_dependency'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activesupport-3.2.8/lib/active_support/dependencies.rb:245:in `load'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/railties-3.2.8/lib/rails/engine.rb:520:in `load_seed'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327/gems/activerecord-3.2.8/lib/active_record/railties/databases.rake:309:in `block (2 levels) in <top (required)>'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:227:in `call'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:227:in `block in execute'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:222:in `each'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:222:in `execute'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:166:in `block in invoke_with_call_chain'
/Users/tyamuro/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:159:in `invoke_with_call_chain'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:187:in `block in invoke_prerequisites'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:185:in `each'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:185:in `invoke_prerequisites'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:165:in `block in invoke_with_call_chain'
/Users/tyamuro/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:159:in `invoke_with_call_chain'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/task.rb:152:in `invoke'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:141:in `invoke_task'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:99:in `block (2 levels) in top_level'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:99:in `each'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:99:in `block in top_level'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:108:in `run_with_threads'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:93:in `top_level'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:71:in `block in run'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:158:in `standard_exception_handling'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/lib/rake/application.rb:68:in `run'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/gems/rake-10.0.2/bin/rake:37:in `<top (required)>'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/bin/rake:19:in `load'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/bin/rake:19:in `<main>'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/bin/ruby_noexec_wrapper:14:in `eval'
/Users/tyamuro/.rvm/gems/ruby-1.9.3-p327@global/bin/ruby_noexec_wrapper:14:in `<main>'
Tasks: TOP => db:purge => db:seed