我正在尝试从rake任务运行一个heroku控制台命令，所以我的方法是尝试在一行上完成所有操作。 请注意，这是有效的
heroku运行控制台 Rails.cache.clear
这是我的佣金任务：
task :setup_staging_env do
sh "heroku run console Rails.cache.clear"
end
但这失败了。所以为了简化我在命令行上尝试了这个命令并得到这个：
heroku run console Rails.cache.clear
Running console Rails.cache.clear attached to terminal... up, run.1
You did not specify how you would like Rails to report deprecation notices for your Rails.cache.clear environment, please set config.active_support.deprecation to :log, :notify or :stderr at config/environments/Rails.cache.clear.rb
/usr/local/lib/ruby/1.9.1/uri/common.rb:156:in `split': bad URI(is not URI?): (URI::InvalidURIError)
from /usr/local/lib/ruby/1.9.1/uri/common.rb:174:in `parse'
from /usr/local/lib/ruby/1.9.1/uri/common.rb:628:in `parse'
from /app/config/initializers/resque.rb:2:in `<top (required)>'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:234:in `load'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:234:in `block in load'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `block in load_dependency'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:640:in `new_constants_in'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `load_dependency'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:234:in `load'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/engine.rb:556:in `block (2 levels) in <class:Engine>'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/engine.rb:555:in `each'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/engine.rb:555:in `block in <class:Engine>'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:30:in `instance_exec'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:30:in `run'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:55:in `block in run_initializers'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:54:in `each'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:54:in `run_initializers'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/application.rb:96:in `initialize!'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /app/config/environment.rb:6:in `<top (required)>'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `block in require'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `block in load_dependency'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:640:in `new_constants_in'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `load_dependency'
from /app/vendor/bundle/ruby/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/application.rb:83:in `require_environment!'
from /app/vendor/bundle/ruby/1.9.1/gems/railties-3.1.3/lib/rails/commands.rb:39:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
那么如何从rake任务中运行此命令呢？