我正在尝试将代码推送到Heroku,似乎系统gem"hoe"以某种方式包含在其他一些gem中(geokit就是其中之一,但即使从Gemfile中删除了这个宝石也没有运气).这导致Heroku失败,因为它无法更新系统宝石.怎么解决这个问题？
Installing geokit (1.5.0)
Installing geonames (0.2.2)
Installing hoe (2.9.1) /usr/ruby1.8.7/lib/ruby/site_ruby/1.8/rubygems/installer.rb:170:in `install': hoe requires RubyGems version >= 1.4. Try 'gem update --system' to update RubyGems itself. (Gem::InstallError)
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/source.rb:95:in `install'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/installer.rb:55:in `run'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/spec_set.rb:12:in `each'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/spec_set.rb:12:in `each'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/installer.rb:44:in `run'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/installer.rb:8:in `install'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/cli.rb:225:in `install'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/task.rb:22:in `send'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/task.rb:22:in `run'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/invocation.rb:118:in `invoke_task'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor.rb:246:in `dispatch'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/base.rb:389:in `start'
from /usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.7/bin/bundle:13
from /usr/ruby1.8.7/bin/bundle:19:in `load'
from /usr/ruby1.8.7/bin/bundle:19
FAILED: http://devcenter.heroku.com/articles/bundler
!Heroku推被拒绝,未能通过Bundler安装宝石