If you are developing for the Rustler project itself or using it to bridge Rust and Elixir/Erlang, a "solid feature" would be implementing a NIF.
That's a pretty specific file name! While it could refer to a few different things, I'm assuming you're looking for a —as in, a functional addition or code improvement—for a software project named Rustler . File: Rustler.v1.02.29.zip ...
The most common "Rustler" in the developer world is Rustler , a library used to write (Native Implemented Functions) in Rust . If you're building a feature for this (or a similar project using Rust to handle zip files), here are two ways to interpret your request: 1. The "Feature" as a Coding Task (Rustler Library) If you are developing for the Rustler project