Mozilla Automation TeamTWiR Contributors10 min readintermediate
This Week in Rust 668
Summary
This issue of *This Week in Rust* (Sept 9 2026) aggregates community news, recent Rust releases, notable blog posts, a “crate of the week” (tokio‑rcu), and a long list of merged PRs across the compiler, std, Cargo, rustdoc, rustfmt, Clippy and rust‑analyzer. The most concrete technical highlight is the tokio‑rcu crate, an async‑aware userspace RCU implementation built on Tokio.
- Rust 1.98 shipped recently (see Rust Trends #81).
- Rust/C++ Interop Initiative released a progress update.
- Observations include a decade of rustls, SIMD‑driven 150 GiB/s text search, and a design‑space exploration of async/await.
- Crate of the week: **tokio‑rcu**, a user‑space RCU library tailored for async Rust and Tokio.
The newsletter gives a concise pulse on Rust’s ecosystem: new language features, library ergonomics, and tooling refinements that directly affect day‑to‑day development. The tokio‑rcu crate is a concrete example of how async‑first abstractions are maturing in the ecosystem.
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