rust-lang/rustlings

Choose this fork only if its custom exercise/runtime behavior is the point. For most adopters, upstream is the safer default because this fork is old, far behind, and likely missing many recent fixes and maintenance updates.

Prefer this fork if your goal is ZK education, not general Rust onboarding. Prefer upstream Rustlings if you want the broader, better-maintained, more current exercise set and infrastructure.

Choose this fork if you want Rustlings as a solutions/reference repository. Do not choose it if you want the latest upstream learning experience, because it is materially behind and optimized around completed answers rather than the standard exercise flow.

Prefer this fork only if you specifically want its customized curriculum and are willing to maintain it yourself. If you want an actively maintained Rustlings base, upstream is the safer choice.

Prefer this fork if you want a solution-heavy Rustlings teaching fork. Prefer upstream if you want current maintenance, cleaner upgrade paths, and the latest exercise/tooling behavior.

Prefer the fork only if you specifically want a historical solutions mirror; prefer upstream for any current learning, teaching, or maintenance use.

Prefer this fork only if you specifically want solutions for the 2020-era Rustlings set. If you want current Rustlings content, tooling, or a maintained learning repo, upstream is the better choice.

Prefer this fork only if you specifically want a solved, customized Rustlings copy. If you want an actively maintained learning repo, upstream is the better choice.

Choose this fork only if you want its customized training content or repo workflow as-is. Choose upstream if you want active maintenance, current fixes, and lower long-term maintenance cost.