This article is a slight divergence from my Rust in 2025 series. I wanted to share my latest thinking about how to support dyn Trait for traits with async functions and, in particular how to do so in a way that is compatible with the soul of Rust. Background: why is this hard? Supporting async fn in dyn traits is a tricky balancing act. The challenge is reconciling two key things people love about Rust: its ability to express high-level, productive code and its focus on revealing low-level de...
