# Rust Enabling the next-generation trait solver on nightly

- Product: Rust (https://whatsnew.fyi/product/rust)
- Vendor: Rust Foundation
- Date: 2026-08-21
- Original notes: https://blog.rust-lang.org/2026/08/21/enabling-next-solver-on-nightly/
- Permalink: https://whatsnew.fyi/product/rust/releases/2026-08-21-enabling-the-next-generation-trait-solver-on-nigh

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After nearly 4 years of active development, the next-generation trait solver is close to stabilization. We are enabling it by default on nightly to surface any remaining issues and plan to stabilize i…

- **changed** — Enable the next-generation trait solver by default on nightly