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
  
  
  
  • Tracking issue for generic member access
  
  
  • build-std Rust project goal
  
  
  
  


• [@08:27 ] - New sort implementations
  
  
  
  • PR implementing the change
  
  
  • Repo with the research
  
  
  
  


• [@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
  
  
  
  


• [@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
    
    
    
    • CVE announcement
    
    
    
    
  
  
  
  

[@33:39 ] - Rust 1.82

• [@33:39 ] - cargo info


• [@35:06 ] - Apple target promotions
  
  
  
  • Platform support tiers
  
  
  
  


• [@40:10 ] - Precise capturing use<..> syntax
  
  
  
  • The Captures “trick”
  
  
  • Talk on impl Trait
  
  
  
  


• [@47:24 ] - Native syntax for creating a raw pointer
  
  
  
  • Pointers Are Complicated
  
  
  • Pointers Are Complicated II
  
  
  • Pointers Are Complicated III
  
  
  
  


• [@53:43 ] - Safe items with unsafe extern


• [@59:32 ] - Unsafe attributes


• [@1:03:44 ] - Omitting empty types in pattern matching
  
  
  
  • The never type
  
  
  
  


• [@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
  
  
  
  


• [@1:26:14 ] - Changelog deep-dive
  
  
  
  • [@1:26:26 ] - Rewrite binary search implementation
  
  
  
  

[@1:27:30 ] - Rust 1.83

• [@1:27:55 ] - New const capabilities


• [@1:31:50 ] - Stabilized APIs
  
  
  
  • [@1:32:06 ] - New io::ErrorKind variants
  
  
  • [@1:33:10 ] - Option::get_or_insert_default
  
  
  • [@1:34:56 ] - char::MIN
  
  
  
  


• [@1:35:48 ] - Changelog deep-dive
  
  
  
  • [@1:35:48 ] - Unicode 16 Emoji
  
  
  • [@1:39:51 ] - Sysroot trim-paths
  
  
  • [@1:41:31 ] - cargo update informs of outdated versions
  
  
  • [@1:42:43 ] - cargo --timings dark 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
  
  
  
  • [@1:57:58 ] - <i