```ruby
require 'run_utils'

namespace :selenium do

#  Rake::Task[:'selenium:server'].clear_actions
  
  desc "Run the selenium remote-control server"
  task :server do
    system('selenium-rc')
  end

  desc "Run the selenium remote-control server in the background"
  task :server_bg do
    system('nohup selenium-rc 2&>1 &')
  end

  desc "Runs Selenium tests locally (selenium server must already be started)"
  task :local => [:local_env, :suite]

  desc "Run Selenium tests at saucelabs.com (using configuration 'saucelabs' in config/selenium.yml)"
  task :sauce => [:sauce_env, :suite]

  desc "Run Selenium tests using configuration SELENIUM_ENV (from config/selenium.yml)"
  task :custom => [:check_selenium_env_is_set, :suite]

  task :local_env do
    ENV['SELENIUM_ENV'] = 'local'
  end

  task :sauce_env do
    ENV['SELENIUM_ENV'] = 'saucelabs'
  end

  task :check_selenium_env_is_set do
    raise "SELENIUM_ENV must be set" unless ENV['SELENIUM_ENV']
  end

  task :suite do
    if (File.exists?("test/selenium/selenium_suite.rb"))
      RunUtils.run "ruby test/selenium/selenium_suite.rb"
    else
      puts "test/selenium/selenium_suite.rb not found, bailing.\nPlease create a script that will run your selenium tests."
      exit 1
    end
  end
end
```

Update selenium.yml to saucelabs-adapter 0.7.0 syntax.
user
```ruby
require 'saucelabs_adapter/run_utils'

namespace :selenium do
  
  desc "Run the selenium remote-control server"
  task :server do
    system('selenium-rc')
  end

  desc "Run the selenium remote-control server in the background"
  task :server_bg do
    system('nohup selenium-rc 2&>1 &')
  end

  desc "Runs Selenium tests locally (selenium server must already be started)"
  task :local => [:local_env, :suite]

  desc "Run Selenium tests at saucelabs.com (using configuration 'saucelabs' in config/selenium.yml)"
  task :sauce => [:sauce_env, :suite]

  desc "Run Selenium tests using configuration SELENIUM_ENV (from config/selenium.yml)"
  task :custom => [:check_selenium_env_is_set, :suite]

  task :local_env do
    ENV['SELENIUM_ENV'] = 'local'
  end

  task :sauce_env do
    ENV['SELENIUM_ENV'] = 'saucelabs'
  end

  task :check_selenium_env_is_set do
    raise "SELENIUM_ENV must be set" unless ENV['SELENIUM_ENV']
  end

  task :suite do
    if (File.exists?("test/selenium/selenium_suite.rb"))
      RunUtils.run "ruby test/selenium/selenium_suite.rb"
    else
      puts "test/selenium/selenium_suite.rb not found, bailing.\nPlease create a script that will run your selenium tests."
      exit 1
    end
  end
end
```
assistant