我是Ruby和Rails的新手。我正在尝试关注getting started tutorial并在“启动您的第一个Rails应用程序”中收到以下错误。
NOTE: Gem.source_index is deprecated, use Specification. It will be removed on or after 2011-11-01.
Gem.source_index called from /media/05641c6e-483c-49ea-ad48-a68f63984bf1/ruby/workspace/Test/config/../vendor/rails/railties/lib/rails/gem_dependency.rb:21.
NOTE: Gem::SourceIndex#initialize is deprecated with no replacement. It will be removed on or after 2011-11-01.
Gem::SourceIndex#initialize called from /media/05641c6e-483c-49ea-ad48-a68f63984bf1/ruby/workspace/Test/config/../vendor/rails/railties/lib/rails/vendor_gem_source_index.rb:100.
NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
Gem::SourceIndex#add_spec called from /usr/lib/ruby/vendor_ruby/1.8/rubygems/source_index.rb:91.
NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
Gem::SourceIndex#add_spec called from /usr/lib/ruby/vendor_ruby/1.8/rubygems/source_index.rb:91.
NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
Gem::SourceIndex#add_spec called from /usr/lib/ruby/vendor_ruby/1.8/rubygems/source_index.rb:91.
NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
Gem::SourceIndex#add_spec called from /usr/lib/ruby/vendor_ruby/1.8/rubygems/source_index.rb:91.
NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
Gem::SourceIndex#add_spec called from /usr/lib/ruby/vendor_ruby/1.8/rubygems/source_index.rb:91.
NOTE: Gem::SourceIndex#add_spec is deprecated, use Specification.add_spec. It will be removed on or after 2011-11-01.
Gem::SourceIndex#add_spec called from /usr/lib/ruby/vendor_ruby/1.8/rubygems/source_index.rb:91.
/usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require': no such file to load -- rack/handler/--binding=0.0.0.0 (MissingSourceFile)
from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `require'
from /usr/lib/ruby/vendor_ruby/active_support/dependencies.rb:182:in `require'
from /usr/lib/ruby/vendor_ruby/active_support/dependencies.rb:547:in `new_constants_in'
from /usr/lib/ruby/vendor_ruby/active_support/dependencies.rb:182:in `require'
from /usr/lib/ruby/vendor_ruby/rack/handler.rb:63:in `try_require'
from /usr/lib/ruby/vendor_ruby/rack/handler.rb:16:in `get'
from /media/05641c6e-483c-49ea-ad48-a68f63984bf1/ruby/workspace/Test/vendor/rails/railties/lib/commands/server.rb:45
from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in `require'
from /media/05641c6e-483c-49ea-ad48-a68f63984bf1/ruby/workspace/Test/script/server:3
非常感谢有关如何解决此问题的任何帮助。此外，如果有人可以使用堆栈跟踪解释如何理解问题，那将非常有用。