Ruby on Rails的：不能与宝石更新更新

Question

运行gem -v给出：

1.8.11 

运行gem update：

Updating installed gems 
Updating actionmailer 
Fetching: activesupport-3.1.3.gem (100%) 
Fetching: activemodel-3.1.3.gem (100%) 
Fetching: sprockets-2.0.3.gem (100%) 
Fetching: actionpack-3.1.3.gem (100%) 
Fetching: actionmailer-3.1.3.gem (100%) 
Successfully installed activesupport-3.1.3 
Successfully installed activemodel-3.1.3 
Successfully installed sprockets-2.0.3 
Successfully installed actionpack-3.1.3 
Successfully installed actionmailer-3.1.3 
Updating activerecord 
Fetching: activerecord-3.1.3.gem (100%) 
Successfully installed activerecord-3.1.3 
Updating activeresource 
Fetching: activeresource-3.1.3.gem (100%) 
Successfully installed activeresource-3.1.3 
Updating childprocess 
Fetching: childprocess-0.2.3.gem (100%) 
Successfully installed childprocess-0.2.3 
Updating columnize 
Fetching: columnize-0.3.5.gem (100%) 
Successfully installed columnize-0.3.5 
Updating cucumber 
Fetching: gherkin-2.6.8.gem (100%) 
Building native extensions. This could take a while... 
Fetching: cucumber-1.1.3.gem (100%) 

(::) (::) (::) (::) (::) (::) (::) (::) (::) (::) (::) (::) (::) (::) (::) 

Thank you for installing cucumber-1.1.3. 
Please be sure to read http://wiki.github.com/cucumber/cucumber/upgrading 
for important information about this release. Happy cuking! 

(::) (::) (::) (::) (::) (::) (::) (::) (::) (::) (::) (::) (::) (::) (::) 

Successfully installed gherkin-2.6.8 
Successfully installed cucumber-1.1.3 
Updating devise 
Fetching: devise-1.5.2.gem (100%) 
Successfully installed devise-1.5.2 
Updating factory_girl 
Fetching: factory_girl-2.3.2.gem (100%) 
Successfully installed factory_girl-2.3.2 
Updating jquery-rails 
Fetching: jquery-rails-1.0.19.gem (100%) 
Successfully installed jquery-rails-1.0.19 
Updating json 
Fetching: json-1.6.3.gem (100%) 
Building native extensions. This could take a while... 
Successfully installed json-1.6.3 
Updating json_pure 
Fetching: json_pure-1.6.3.gem (100%) 
Successfully installed json_pure-1.6.3 
Updating multi_json 
Fetching: multi_json-1.0.4.gem (100%) 
Successfully installed multi_json-1.0.4 
Updating passenger 
Fetching: passenger-3.0.11.gem (100%) 
Successfully installed passenger-3.0.11 
Updating rails 
Fetching: railties-3.1.3.gem (100%) 
Fetching: rails-3.1.3.gem (100%) 
Successfully installed railties-3.1.3 
Successfully installed rails-3.1.3 
Updating rubyzip 
Fetching: rubyzip-0.9.5.gem (100%) 
Successfully installed rubyzip-0.9.5 
Updating sass 
Fetching: sass-3.1.11.gem (100%) 
Successfully installed sass-3.1.11 
Updating selenium-webdriver 
Fetching: selenium-webdriver-2.14.0.gem (100%) 
Successfully installed selenium-webdriver-2.14.0 
Gems updated: activesupport, activemodel, sprockets, actionpack, actionmailer, activerecord, activeresource, childprocess, columnize, gherkin, cucumber, devise, factory_girl, jquery-rails, json, json_pure, multi_json, passenger, railties, rails, rubyzip, sass, selenium-webdriver 
Installing ri documentation for activesupport-3.1.3... 
Installing ri documentation for activemodel-3.1.3... 
Installing ri documentation for sprockets-2.0.3... 
Installing ri documentation for actionpack-3.1.3... 
Installing ri documentation for actionmailer-3.1.3... 
Installing ri documentation for activerecord-3.1.3... 
Installing ri documentation for activeresource-3.1.3... 
Installing ri documentation for childprocess-0.2.3... 
Installing ri documentation for columnize-0.3.5... 
Installing ri documentation for gherkin-2.6.8... 
Installing ri documentation for cucumber-1.1.3... 
Installing ri documentation for devise-1.5.2... 
Installing ri documentation for factory_girl-2.3.2... 
Installing ri documentation for jquery-rails-1.0.19... 
Installing ri documentation for json-1.6.3... 
Installing ri documentation for json_pure-1.6.3... 
Installing ri documentation for multi_json-1.0.4... 
Installing ri documentation for passenger-3.0.11... 
Installing ri documentation for railties-3.1.3... 
Installing ri documentation for rails-3.1.3... 
Installing ri documentation for rubyzip-0.9.5... 
Installing ri documentation for sass-3.1.11... 
Installing ri documentation for selenium-webdriver-2.14.0... 
ERROR: While executing gem ... (ArgumentError) 
    marshal data too short 

我应该怎么办？

Answer 1

尝试制作备份您的~/.gems文件夹中，然后清除它，并再次运行该命令。

编号：http://keyj.wordpress.com/2009/03/20/error-with-rubygems-marshal-data-too-short/

Answer 2

您是不是要找：

gem update --system 

或者你想更新特定的宝石：

gem update rails