The compiler's exhaustiveness algorithm has been rewritten, resulting in dramatically faster compile times for large match blocks with hundreds of variants. 3. Compiler Performance and Parallel Frontend Progress
Many new impl items and methods were stabilized in the standard library.
sync::LazyLock Updates: Further refinements to the newly stabilized thread-safe lazy initialization types, optimizing performance on multi-core systems. Cargo Quality-of-Life Improvements announcing rust 1960
: For the first time, Rust includes a lightweight formal verification engine. By using the #[verify] attribute, developers can prove mathematical properties of their functions (such as "this sort always returns a sorted list") during compilation, bridging the gap between standard testing and formal proofs. Safety as a Starting Point, Not a Ceiling
Rust 1960 introduces a new error handling system, called "Result++," which provides a more expressive and flexible way to handle errors in Rust programs. Result++ combines the best features of existing error handling systems with novel ideas from programming languages research. Safety as a Starting Point, Not a Ceiling
Additionally, the introduction of optimized parallel frontend processing by default reduces incremental build times for medium-to-large projects by up to 12%. Stabilized APIs
Previously, managing optional dependencies often led to verbose features lists and "feature hijacking." The new system allows developers to create features that specifically enable dependencies without manually linking them in top-level features lists. Stabilized APIs Previously
In 1.60.0, methods like duration_since , elapsed , and sub will now instead of panicking. This makes Rust software more resilient in environments with unreliable monotonic clocks. 6. Notable Library Stabilizations Several useful APIs were stabilized in this release:
Sub-crates in a workspace can now inherit lint configurations directly from the root Cargo.toml , ensuring uniform code quality across massive monorepos.
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