rake db:migrate または rake -T と入力するたびに rake タスク/コマンドを実行する際に問題が発生し、未定義のメソッド `end_with?' というエラーが表示されます。for "rake aborted!":String (NoMethodError).ruby186、rails238、gem バージョン 1.3.3 を使用
rake db:migrate
/home/projects/.rvm/gems/ruby-1.8.6-p420@global/gems/rubygems-bundler-1.1.0/lib/rubygems-bundler/regenerate_binstubs_command.rb:48: warning: parenthesize argument(s) for future version
/home/a3logics/.rvm/gems/ruby-1.8.6-p420@global/gems/rake-10.0.3/lib/rake/trace_output.rb:14:in `trace_on': undefined method `end_with?' for "rake aborted!":String (NoMethodError)
from /home/a3logics/.rvm/gems/ruby-1.8.6-p420@global/gems/rake-10.0.3/lib/rake/trace_output.rb:14:in `map'
from /home/a3logics/.rvm/gems/ruby-1.8.6-p420@global/gems/rake-10.0.3/lib/rake/trace_output.rb:14:in `trace_on'
from /home/a3logics/.rvm/gems/ruby-1.8.6-p420@global/gems/rake-10.0.3/lib/rake/application.rb:322:in `trace'
from /home/a3logics/.rvm/gems/ruby-1.8.6-p420@global/gems/rake-10.0.3/lib/rake/application.rb:176:in `display_error_message'
from /home/a3logics/.rvm/gems/ruby-1.8.6-p420@global/gems/rake-10.0.3/lib/rake/application.rb:169:in `standard_exception_handling'
from /home/a3logics/.rvm/gems/ruby-1.8.6-p420@global/gems/rake-10.0.3/lib/rake/application.rb:70:in `run'
from /home/a3logics/.rvm/gems/ruby-1.8.6-p420@global/gems/rake-10.0.3/bin/rake:33
from /home/a3logics/.rvm/gems/ruby-1.8.6-p420@global/bin/rake:19:in `load'
from /home/a3logics/.rvm/gems/ruby-1.8.6-p420@global/bin/rake:19
from /home/a3logics/.rvm/gems/ruby-1.8.6-p420/bin/ruby_noexec_wrapper:14
ここで立ち往生したヘルプ。