我正在 Ubuntu 14.04 桌面上安装 Fedena 3.0。当给出此命令Rake db：create时，我收到以下错误，请帮助。
我在谷歌上搜索了很多解决方案，但没有帮助。
我的宝石列表是：
本地宝石 *****
actionmailer (2.3.5)
actionpack (2.3.5)
activerecord (2.3.5)
activeresource (2.3.5)
activesupport (2.3.5)
bundler (1.9.4)
daemons (1.1.9)
declarative_authorization (0.5.1)
diff-lcs (1.2.5)
fastercsv (1.5.5)
hoe (3.13.1)
i18n (0.4.2)
json (1.8.1)
mini_portile (0.6.1)
multi_json (1.10.1)
passenger (5.0.6)
prawn (0.6.3)
prawn-core (0.6.3)
prawn-format (0.2.3)
prawn-layout (0.3.2)
prawn-security (0.1.1)
rack (1.0.1)
rails (2.3.5)
rake (0.8.7)
rdoc (4.2.0)
rspec (3.2.0)
rspec-core (3.2.3)
rspec-expectations (3.2.1)
rspec-mocks (3.2.1)
rspec-support (3.2.2)
rubygems-bundler (1.1.0)
rubygems-update (1.4.2)
rush (0.6.8)
session (3.2.0)
simpleconsole (0.1.1)
task (0.0.1)
test-unit (1.2.3)
我得到的错误：
# rake db:create --trace
/var/lib/gems/1.9.1/gems/rake-0.8.7/lib/rake/alt_system.rb:32: Use RbConfig instead of obsolete and deprecated Config.
(in /home/tareen/ansi)
rake aborted!
cannot load such file -- spec/rake/spectask
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/var/lib/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `block in require'
/var/lib/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in'
/var/lib/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
/home/tareen/ansi/lib/tasks/rspec.rake:22:in `<top (required)>'
/var/lib/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:in `load'
/var/lib/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:in `block in load_with_new_constant_marking'
/var/lib/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in'
/var/lib/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:in `load_with_new_constant_marking'
/var/lib/gems/1.9.1/gems/rails-2.3.5/lib/tasks/rails.rb:9:in `block in <top (required)>'
/var/lib/gems/1.9.1/gems/rails-2.3.5/lib/tasks/rails.rb:9:in `each'
/var/lib/gems/1.9.1/gems/rails-2.3.5/lib/tasks/rails.rb:9:in `<top (required)>'
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
/home/tareen/ansi/Rakefile:10:in `<top (required)>'
/var/lib/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2383:in `load'
/var/lib/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2383:in `raw_load_rakefile'
/var/lib/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2017:in `block in load_rakefile'
/var/lib/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/var/lib/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2016:in `load_rakefile'
/var/lib/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2000:in `block in run'
/var/lib/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
/var/lib/gems/1.9.1/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
/var/lib/gems/1.9.1/gems/rake-0.8.7/bin/rake:31:in `<top (required)>'
/usr/local/bin/rake:19:in `load'
/usr/local/bin/rake:19:in `<main>'
/usr/local/bin/ruby_noexec_wrapper:14:in `eval'
/usr/local/bin/ruby_noexec_wrapper:14:in `<main>'
请帮助我。
Fedena 特别需要 Ruby 1.8.7。在任何其他版本的 ruby 上安装 Fedena 都会失败。这些是所需的以下软件版本：
- 红宝石 1.8.7
- 红宝石 1.3.7
- 导轨 2.3.5
您可以使用以下内容来确认版本。对于 Ruby，请运行 ruby -v 。对于 Rubygems，运行gem -v，对于 rails，您可以使用 rails -v 命令或gem list | grep rails 。
您的问题源于 Ruby 1.8.* 已从官方 Ubuntu 14.04 存储库中删除，并且您安装 Rails 正在下载 1.9.1 作为依赖项。
为了让您更容易，我邀请您设置一个新服务器并在此处运行 Fedena 2.3 的自动安装程序，它将安装所需的基本库，之后您应该安装上面的其他 gem，并且您的安装应该可以正常工作。