{"source":"crates","note":"Free 5-item preview. The full feed is $0.05/call at GET /v1/crates/changes.","question":"Did a tracked Rust crate package (e.g. serde, tokio, clap) ship a new release since T, and is it a breaking (major) version for my Cargo.toml?","sample":[{"source":"crates","entityId":"pkg:syn","type":"new_release","title":"syn 3.0.1","summary":"Parser for Rust source code","significance":3,"detectedAt":"2026-07-19T23:34:36.479Z","effectiveDate":"2026-07-19T23:09:17.151614Z","sourceUrl":"https://crates.io/crates/syn","detail":{"package":"syn","ecosystem":"crates.io (Rust)","version":"3.0.1","previousVersion":"3.0.0","versionJump":"patch"}},{"source":"crates","entityId":"pkg:syn","type":"breaking_change","title":"syn 3.0.0","summary":"Parser for Rust source code","significance":8,"detectedAt":"2026-07-18T23:41:09.516Z","effectiveDate":"2026-07-18T20:35:01.791185Z","sourceUrl":"https://crates.io/crates/syn","detail":{"package":"syn","ecosystem":"crates.io (Rust)","version":"3.0.0","previousVersion":"2.0.119","versionJump":"major"}},{"source":"crates","entityId":"pkg:thiserror","type":"new_release","title":"thiserror 2.0.19","summary":"derive(Error)","significance":3,"detectedAt":"2026-07-18T23:41:09.121Z","effectiveDate":"2026-07-18T22:14:33.311565Z","sourceUrl":"https://crates.io/crates/thiserror","detail":{"package":"thiserror","ecosystem":"crates.io (Rust)","version":"2.0.19","previousVersion":"2.0.18","versionJump":"patch"}},{"source":"crates","entityId":"pkg:anyhow","type":"new_release","title":"anyhow 1.0.104","summary":"Flexible concrete Error type built on std::error::Error","significance":3,"detectedAt":"2026-07-18T23:41:08.926Z","effectiveDate":"2026-07-18T20:59:37.656167Z","sourceUrl":"https://crates.io/crates/anyhow","detail":{"package":"anyhow","ecosystem":"crates.io (Rust)","version":"1.0.104","previousVersion":"1.0.103","versionJump":"patch"}},{"source":"crates","entityId":"pkg:tokio","type":"new_release","title":"tokio 1.53.0","summary":"An event-driven, non-blocking I/O platform for writing asynchronous I/O backed applications.","significance":5,"detectedAt":"2026-07-18T23:41:07.252Z","effectiveDate":"2026-07-17T08:15:43.911700Z","sourceUrl":"https://crates.io/crates/tokio","detail":{"package":"tokio","ecosystem":"crates.io (Rust)","version":"1.53.0","previousVersion":"1.52.4","versionJump":"minor"}}]}