I am unable to start the browser on the CI server (localhost on Linux in my case) when triggering a cucumber test via invoking a rake task after build from Jenkins. Jenkins cons
Someone else had a similar issue and the solution looked to be making sure you have a stable version of Capybara and latest selenium webdriver
unable to obtain stable firefox connection in 60 seconds (127.0.0.1:7055)
Let me know if this solution helps!