Jon and Ben discuss the highlights of the 1.56 and 1.57 releases of Rust.



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Timestamps & referenced resources

[@01:14] - Rust 2021 edition


[@01:16] - What is an edition?
[@05:03] - Disjoint captures in closures

Niko’s “view types” proposal


[@09:00] - IntoIterator for arrays
[@11:12] - Or patterns in macro_rules
[@13:31] - New default Cargo feature resolver

Details on the new resolver


[@15:16] - Additions to the prelude

std::prelude
FromIterator


[@19:38] - Panic macro consistency and new reserved syntax

[@20:33] - Implicit formatting captures (more on Reddit)
[@25:00] - Reserved syntax for “f-strings”
[@27:54] - Why panic! had to change
[@28:55] - Other uses for reserved syntax


[@30:15] - Warnings promoted to errors

Future incompatibility warnings


[@35:23] - cargo fix


[@36:20] - Rust 1.56


[@36:30] - Cargo.toml rust-version

Cargo book entry


[@42:54] - New bindings in binding @ pattern
[@44:27] - Stabilized APIs
[@49:27] - Changelog deep-dive

[@49:27] - impl From<[(K, V), N]> for collections

RFC for adding collection literal macros


[@53:07] - Remove P: Unpin bound on impl Future for Pin
[@55:16] - Instant backsliding protection optimization

May end up being removed!


[@58:01] - LLVM 13 upgrade

LLVM’s new pass manager


[@59:23] - Have Cargo set environment variables


[@1:00:17] - Rust 1.56.1

Security advisory
The “Trojan Source” vulnerability
Rust RFC on non-ASCII identifiers




[@1:04:52] - Rust 1.57


[@1:05:20] - Panic in const contexts
[@1:07:20] - Custom Cargo profiles

Cargo book on profiles


[@1:08:45] - Fallible allocation

Fallible collection allocation RFC
Linux Torvals on handling allocation failures
Rust features still needed by the Linux kernel


[@1:12:33] - Stabilized APIs
[@1:16:45] - Changelog deep-dive

[@1:16:50] - Vec::leak no longer allocates
[@1:18:03] - Nintendo 3DS added as Tier 3 platform
[@1:19:03] - Cargo no longer passes through RUSTFLAGS

Environment variables set by Cargo


[@1:20:13] - Lots more #[must_use] in std
[@1:22:00] - File::read_to_* optimized
[@1:23:24] - Curly braces macros accept following . and ?


[@1:25:22] - Banter – Rust all the way down.


Credits

Intro Theme: Aerocity

Audio Editing: Aerocity

Hosting Infrastructure: Jon Gjengset

Show Notes: Jon Gjengset

Hosts: Jon Gjengset and Ben Striegel

Transcript: Eric Seppanen