[simlevesque]

I have solved this problem by using SlimerJS as an alternative.

[serve_yay]

Yeah, unfortunately we can't install that one on our build box, I believe because it needs X11. (As the page says it is not "totally headless")

[simlevesque]

You are mistaken. You can install SlimerJS on a box without X11. You must install Xvfb use it like this : xvfb-run slimerjs script.js

If you use casperjs you can modify the executable (it's python) and change "'default_exec' : 'slimerjs'" into "'default_exec' : 'xvfb-run slimerjs'"