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Rust bars LLM-generated code from rust-lang/rust unless pre-arranged and disclosed

Rust bars LLM-generated code from rust-lang/rust unless pre-arranged and disclosed

Five Rust teams adopted a policy for rust-lang/rust drawing one line: LLMs can answer, analyze, check, and review, but not create. Contributors must pre-arrange, test, and disclose LLM-generated code, soundness-critical changes need a domain-expert author, and reviewers can now close non-compliant PRs against a 1,281-PR backlog.

Source: blog.rust-lang.org

Post on XEmail

Polished PRs no longer indicate effort; authors of polished PRs no longer necessarily understand their code.

Rust policy author (blog.rust-lang.org)

Why this matters

  • → Formalizes LLM code-contribution rules to prevent review bandwidth collapse.
  • → Signals that polished code no longer proves effort or understanding.
  • → Closes loophole: 1,281 open PRs + easier LLM writing = unmanageable review load.
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