"You should report this to the Dev of that demo. Official Godot binaries are built on Ubuntu 14.04 and don't have this compat issue."
Viewing post in Debt Clicker jam comments
Well, that’s pretty weird. I can try to build a project under the “official” version of Godot, but I can not guarantee compatibility with any linux distributions, even though I work under Arch.
P.S.: Reuploaded to channel. Try again, please.
P.P.S: Oh no, the stable version is unable to process the script that normally processes the latest release candidate. Reuploaded again.