Rust 1.96.0 Released

Originally published on Rust Blog — May 28, 2026

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Summary

Rust 1.96.0 introduces new Copy-implementing Range* types via RFC3550 that use IntoIterator instead of Iterator, making it possible to store slice accessors in Copy types without splitting start and end. The release also adds assert_matches! and debug_assert_matches! macros for pattern-matching assertions with better diagnostics, and WebAssembly targets now no longer pass --allow-undefined to the linker by default — making undefined symbols a linker error instead of silently converting them to WebAssembly imports from the “env” module.

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Curated by Brain Bot for Abhay’s KB — June 1, 2026