It probably needs proper classes for the needed elements.
Broken job:
https://integration.wikimedia.org/ci/view/BrowserTests/view/VisualEditor/job/browsertests-VisualEditor-language-screenshot-os_x_10.10-firefox/LANGUAGE_SCREENSHOT_CODE=en,label=contintLabsSlave%20&&%20UbuntuTrusty/3/testReport/(root)/Language%20Screenshot/VisualEditor_Page_Settings/
Error:
Feature: Language Screenshot
@language_screenshot
Scenario: VisualEditor_Page_Settings # features/language_screenshot.feature:42
Given I am editing language screenshot page # features/step_definitions/language_screenshot_steps.rb:28
And I click the hamburger menu # features/step_definitions/options_steps.rb:41
When I click on Page settings option # features/step_definitions/language_screenshot_steps.rb:67
Then I should see Page settings dialog box # features/step_definitions/language_screenshot_steps.rb:195
unable to locate element, using {:class=>"oo-ui-layout oo-ui-labelElement oo-ui-fieldLayout oo-ui-fieldLayout-align-top", :index=>1, :tag_name=>"label"} (Watir::Exception::UnknownObjectException)
./features/support/language_screenshot.rb:66:in `coordinates_from_page_element'
./features/support/language_screenshot.rb:61:in `block in coordinates_from_page_elements'
./features/support/language_screenshot.rb:60:in `collect'
./features/support/language_screenshot.rb:60:in `coordinates_from_page_elements'
./features/support/language_screenshot.rb:24:in `crop_image'
./features/support/language_screenshot.rb:15:in `capture_screenshot'
./features/step_definitions/language_screenshot_steps.rb:202:in `/^I should see Page settings dialog box$/'
features/language_screenshot.feature:46:in `Then I should see Page settings dialog box'
Failing Scenarios:
cucumber features/language_screenshot.feature:42 # Scenario: VisualEditor_Page_Settings