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我使用VPS centos6，紅寶石1.8.7和1.3.7的寶石
當我耙分貝：遷移--trace以下錯誤出現CentOS 6的VPS紅寶石耙問題
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
no such file to load -- readline
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original _require'
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:521:in `new_constants_in'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/rush-0.6.8/lib/rush/shell.rb:1
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original _require'
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:521:in `new_constants_in'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/rush-0.6.8/lib/rush/embeddable_shell.rb:1
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original _require'
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:521:in `new_constants_in'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/rush-0.6.8/lib/rush.rb:87
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original _require'
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:521:in `new_constants_in'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/home/buraq/demo/vendor/plugins/delayed_job/lib/delayed/worker.rb:1
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original _require'
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:521:in `new_constants_in'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/home/buraq/demo/vendor/plugins/delayed_job/lib/delayed_job.rb:6
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original _require'
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:521:in `new_constants_in'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/home/buraq/demo/vendor/plugins/delayed_job/init.rb:1:in `evaluate_init_rb'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin.rb:158:in `evalua te_init_rb'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/core_ex t/kernel/reporting.rb:11:in `silence_warnings'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin.rb:154:in `evalua te_init_rb'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin.rb:48:in `load'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:38:in ` load_plugins'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:37:in ` each'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:37:in ` load_plugins'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:369:in `load_pl ugins'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:165:in `process '
/usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in `send'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in `run'
/home/buraq/demo/config/environment.rb:6
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original _require'
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:521:in `new_constants_in'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/depende ncies.rb:156:in `require'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/tasks/misc.rake:4
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `call'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `execute'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `each'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `execute'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_cal l_chain'
/usr/local/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_cal l_chain'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:607:in `invoke_prerequi sites'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `each'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in `invoke_prerequi sites'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:596:in `invoke_with_cal l_chain'
/usr/local/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_cal l_chain'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:in `invoke'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `each'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_excep tion_handling'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in `run'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_excep tion_handling'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.7/bin/rake:31
/usr/local/bin/rake:19:in `load'
/usr/local/bin/rake:19