While using Watir Webdriver v0.9.1 for rails (along with Selenium Webdriver 2.53.1), Firefox was opening when
browser = Watir::Browser.new :firefox
was called. Now however, it fails on that line with
unable to bind to locking port 7054 within 45 seconds
@ /Users/andmcadams/.rvm/gems/ruby-2.0.0-p648/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/common/socket_lock.rb:59:in `lock'
/Users/andmcadams/.rvm/gems/ruby-2.0.0-p648/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/common/socket_lock.rb:40:in `locked'
/Users/andmcadams/.rvm/gems/ruby-2.0.0-p648/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/firefox/launcher.rb:51:in `launch'
/Users/andmcadams/.rvm/gems/ruby-2.0.0-p648/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/firefox/bridge.rb:43:in `initialize'
/Users/andmcadams/.rvm/gems/ruby-2.0.0-p648/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/common/driver.rb:53:in `new'
/Users/andmcadams/.rvm/gems/ruby-2.0.0-p648/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver/common/driver.rb:53:in `for'
/Users/andmcadams/.rvm/gems/ruby-2.0.0-p648/gems/selenium-webdriver-2.53.1/lib/selenium/webdriver.rb:84:in `for'
/Users/andmcadams/.rvm/gems/ruby-2.0.0-p648/gems/watir-webdriver-0.9.1/lib/watir-webdriver/browser.rb:46:in `initialize'
test/integration/like_fanpage_task_test.rb:40:in `new'
test/integration/like_fanpage_task_test.rb:40:in `block (2 levels) in <class:LikeFanpageTaskTest>'
It seemed to do so randomly, as I did not change the code from its working form and that line is the first line called. I have Firefox 37.0.2, which worked earlier. I have tried restarting my computer, killing processes related to ruby and Firefox and starting them again, and reinstalling Firefox but to no avail.
Mozilla has introduced a new webdriver, and due to a bug in firefox 47, only the new webdriver works for firefox. However I would suggest permanently switching to the new webdriver either way as support will be fully dropped as of firefox 48.
You can use the new webdriver in ruby using the following:
driver = Selenium::WebDriver.for :firefox, marionette: true
But I don't know if that would make you able to use it in watir as well.
As far as I can tell marionette (the new driver) support is not completed yet in watir (I could be wrong), I see this pull request is dealing with it but it is not completed or merged.
It looks to me as if you can do:
browser = Watir::Browser.new :marionette
When the watir project is finished integrating the new driver.
PLease use latest webdriver selenium-webdriver.2.5.4 it is not available yet on seleniumhq but search for it.
来源：https://stackoverflow.com/questions/37800215/watir-webdriver0-9-1-no-longer-opens-an-instance-of-firefox