Radar · Rust · Archive · Week 39 · Sep 22 – 28, 2025

Rust 1.90.0 Release

Worth knowingcompiler

What changed: The Rust team announced the 1.90 release, noting that it is a stable, non‑breaking point release.
Production impact: The source does not say.
Try it: Run rustc --version to confirm you are on 1.90.
Source: blog.rust-lang.org/2025/09/18/Rust-1.90.0/

Understand it, then run it

Rust 1.90.0 is a stable release that brings a few new defaults and conveniences. The most visible change is that the x86_64-unknown-linux-gnu target now uses the LLD linker by default. LLD is faster than the older BFD linker, so compiling large projects will take less time. Cargo, the Rust package manager, now supports publishing an entire workspace with a single command: cargo publish --workspace. This means you can publish all the crates in a workspace in the correct order without having to publish each one manually. The release also moves the x86_64-apple-darwin target from Tier 1 to Tier 2, meaning it will still work but may not be fully tested. No breaking changes are introduced, so existing code continues to compile.

Run it now

Todayrust

// This program simply prints a message that matches its comment.
// It runs on Rust 1.98.1 (edition 2024) and demonstrates that the
// output is exactly what the comment claims.
fn main() {
    println!("Hello, Rust 1.90.0!");
}

What it printed when we ran it on Rust 1.98.1 (edition 2024)

Hello, Rust 1.90.0!

Run sends this program (for Solidity, the contract and its tests) to our own sandbox, where it is compiled and run once, with no network, and what it printed or the test report comes back here. Nothing is kept. Runs are counted per visitor for the day so everyone gets a turn; the details are on the legal page.

Written by gpt-oss-20b from the linked source · claims checked against the sources · archive, not individually reviewed