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.
In a completely different lane, "Rustler" is a legendary RC truck by . If that .zip file is actually a firmware update or a parts list for a version 1.02.29 build, the most "solid" feature you can add is a Steel Driveshaft Upgrade . File: Rustler.v1.02.29.zip ...
Instead of loading the entire Rustler.v1.02.29.zip into memory, write a NIF that streams the file contents back to Elixir using Resource Arcs . If you are developing for the Rustler project
Stock plastic half-shafts often snap under the torque of a brushless motor. Upgrading to steel constant-velocity (CV) driveshafts, like those from Traxxas , is considered the single best durability "feature" for any Rustler build. Wait, which one are you working on? Are you writing code for the Rustler Elixir/Rust library ? Instead of loading the entire Rustler