arbitrary

9.9M downloads in the last 30 days (329.3K/day), up 26% from the previous period.

18.1K crates depend on arbitrary — it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.

This crate is maintained by a team (2 owners), reducing bus-factor risk and ensuring continuity.

The API has been stable (1.x) for over 9 years with 38 releases. This level of maturity means you can depend on it without worrying about breaking changes.

Only 2 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

At 37KB, arbitrary is lightweight. Small crate size correlates with focused, well-scoped functionality.

Notable dependents include bitflags, indexmap, regex-syntax, smallvec, generic-array. When high-quality crates choose arbitrary, it's a strong quality signal.