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我試過更新寶石。我發現的問題試圖做的Heroku耙分貝後：遷移和它說：rake db：migrate depreciated ...我該怎麼辦？
rake aborted!
no such file to load -- faker
/app/Rakefile:7:in `<top (required)>'
(See full trace by running task with --trace)
然後當我耙分貝：遷移它說：
NOTE: Gem.source_index is deprecated, use Specification. It will be removed on or after 2011-11-01.
Gem.source_index called from /usr/local/rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/shared_helpers.rb:3.
NOTE: Gem.source_index is deprecated, use Specification. It will be removed on or after 2011-11-01.
Gem.source_index called from /usr/local/rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/source.rb:162.
NOTE: Gem::SourceIndex#each is deprecated with no replacement. It will be removed on or after 2011-11-01.
Gem::SourceIndex#each called from /usr/local/rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/source.rb:162.
NOTE: Gem.source_index is deprecated, use Specification. It will be removed on or after 2011-11-01.
Gem.source_index called from /usr/local/rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/shared_helpers.rb:84.
不太清楚我在做什麼錯誤。