I found Dyon last year by searching for a scripting language with lifetimes. After looking into Rust, I got the impression lifetimes were a part of the type-system that didn't static typing per se.

You need to keep track where your variables point to and how long they do it, but what they point at isn't that important, at least in scripting.

Dyon seems to be a scripting language with many features for games, so it probably seems a bit overloaded for people who use stuff like Lua.