Comment by flykespice

> My understanding from afar is that a Rust dev wanted to interact with C code in a way that the C maintainer didn't like.

He didn't want any Rust code at all touching his turf. He outright NACKed without any technical reason and refused any negotiations with the Rust team that any Rust build fails due to C code breaking changes would be their entire responsibility.

> This led to the C dev saying that while he likes Rust, he believes multi-language codebases are cancer and would stonewall all Rust code that touches his code.

I believe that was an attempt of damage control to save face and he actually meant to call Rust "cancer".