Its top 10 were JavaScript, Python, Java, PHP, C#, CSS, C++, TypeScript, Ruby, C, and Swift. Rust was in 19th spot. Notably, though, Java was not one of the languages to see much growth on GitHub.

While C interoperability has been a focus of Rust, various factors have inhibited a mature, standard, and automatic solution for developing software using C++ and Rust together, the document states.