What's New in Rust 1.81 through 1.84
Update: 2025-10-29
1
Description
Jon and Ben discuss the highlights of the 1.81 through 1.84 releases of Rust.
This episode was recorded as part of a YouTube live stream on
2025-10-26, which you can still
watch.
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Timestamps & referenced resources
[@01:58 ] - Rust 1.81
- [@02:05 ] -
core::error::Error
- [@08:27 ] - New sort implementations
- [@10:49 ] -
#[expect(lint)] - [@14:37 ] - Lint reasons
- [@16:18 ] - Stabilized APIs
- [@16:34 ] -
Duration::abs_diff - [@17:25 ] -
hint::assert_unchecked - [@22:36 ] -
fs::exists
- [@16:34 ] -
- [@25:37 ] - Compatibility notes
- [@20:40 ] - Split panic hook and panic handler arguments
- [@23:00 ] - Abort on uncaught panics in
extern "C"functions - [@27:01 ] - WASI 0.1 target naming changed
- [@30:10 ] - Fix for CVE-2024-43402
[@33:39 ] - Rust 1.82
- [@33:39 ] -
cargo info - [@35:06 ] - Apple target promotions
- [@40:10 ] - Precise capturing
use<..>syntax
- [@47:24 ] - Native syntax for creating a raw pointer
- [@53:43 ] - Safe items with
unsafe extern - [@59:32 ] - Unsafe attributes
- [@1:03:44 ] - Omitting empty types in pattern matching
- [@1:11:33 ] - Floating-point NaN semantics and
const - [@1:17:41 ] - Constants as assembly immediates
- [@1:19:06 ] - Safely addressing unsafe
statics - [@1:22:56 ] - Stabilized APIs
- [@1:23:03 ] -
thread::Builder::spawn_unchecked - [@1:25:10 ] - Working with
MaybeUninit - [@1:25:48 ] - Exposed SIMD intrinsics
- [@1:23:03 ] -
- [@1:26:14 ] - Changelog deep-dive
[@1:27:30 ] - Rust 1.83
- [@1:27:55 ] - New const capabilities
- [@1:31:50 ] - Stabilized APIs
- [@1:32:06 ] - New
io::ErrorKindvariants - [@1:33:10 ] -
Option::get_or_insert_default - [@1:34:56 ] -
char::MIN
- [@1:32:06 ] - New
- [@1:35:48 ] - Changelog deep-dive
- [@1:35:48 ] - Unicode 16 Emoji
- [@1:39:51 ] - Sysroot trim-paths
- [@1:41:31 ] -
cargo updateinforms of outdated versions - [@1:42:43 ] -
cargo --timingsdark mode - [@1:43:15 ] - Checksum-based freshness in Cargo nightly
[@1:44:26 ] - Rust 1.84
- [@1:44:40 ] - Cargo considers Rust version for dependency version selection
- [@1:49:03 ] - Migration to the new trait solver begins
- [@1:51:47 ] - Strict provenance APIs
- Pointers Are Complicated
- Pointers Are Complicated II
- Pointers Are Complicated III
- Rust has provenance
- Gankra’s write-up on raw pointer design
- Strict provenance APIs tracking issue
- [@1:57:53 ] - Stabilized APIs
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