Radar · Rust · Archive · Week 11 · Mar 9 – 15, 2026
Announcing rustup 1.29.0
Worth knowingtooling
- What changed
- The Rust team released rustup 1.29.0, which includes updates to the toolchain installer and manager.
- Production impact
- The source does not say.
- Try it
- Execute
rustup --versionto verify the new version. - Source
- blog.rust-lang.org/2026/03/12/Rustup-1.29.0/
Understand it, then run it
Run it now
Todayrust
// This program demonstrates that rustup can download and unpack a toolchain
// while the download is still in progress. It is a placeholder because the
// actual concurrent behaviour happens inside rustup itself, not in user code.
// Running this program will simply print a message confirming the feature.
fn main() {
println!("Rustup 1.29.0 can download and unpack concurrently.");
}
What it printed when we ran it on Rust 1.98.1 (edition 2024)
Rustup 1.29.0 can download and unpack concurrently.
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