thiserror

95.8M downloads in the last 30 days (3.2M/day), up 26% from the previous period.

526.8K crates depend on thiserror — it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.

The primary maintainer publishes 231 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

The API has been stable (1.x) for over 6 years with 89 releases. This level of maturity means you can depend on it without worrying about breaking changes.

At 28KB, thiserror is lightweight. Small crate size correlates with focused, well-scoped functionality.

Notable dependents include anyhow, displaydoc, tungstenite, opentelemetry, quinn-proto. When high-quality crates choose thiserror, it's a strong quality signal.