Radar · Rust · Archive · Week 38 · Sep 15 – 21, 2025

Rust 1.90.0 Release

Worth knowingtooling

What changed: The Rust team released Rust 1.90.0, a point release that includes bug fixes and minor improvements.
Production impact: The source does not say.
Try it: Run rustc --version to verify you are on 1.90.0.
Source: blog.rust-lang.org/2025/09/18/Rust-1.90.0/

Understand it, then run it

Rust 1.90.0 is a point release that mainly fixes bugs and adds small improvements. The most visible change is that the default linker for the x86_64-unknown-linux-gnu target is now lld instead of the older bfd. This means that compiling large projects or projects with a lot of debug information will usually finish faster. If you run into a problem, you can switch back to the old linker by adding -Clinker-features=-lld to your build flags.

Another new feature is that cargo publish --workspace works. If you have a workspace with several crates that depend on each other, you can publish them all at once and Cargo will figure out the correct order.

The release also moves the x86_64-apple-darwin target to Tier 2. This target will still build, but it may not be fully tested, so some bugs could appear over time.

Run it now

Todayrust

// This program demonstrates the new default linker (lld) on Linux.
// It compiles and runs in under a second, printing a simple message.
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