Radar · Rust · Archive · Week 3 · Jan 12 – 18, 2026
diesel‑guard crate of the week
Nice to knowecosystem
- What changed
- The crate diesel‑guard is introduced as a linter against dangerous Postgres migrations.
- Production impact
- The source does not say.
- Try it
- Add
diesel-guardto a Cargo.toml and run it against a migration file. - Source
- this-week-in-rust.org/blog/2026/01/14/this-week-in-rust-634/
Understand it, then run it
Run it now
Todayrust
// This program demonstrates the problem that diesel-guard solves.
// It does not compile until the diesel-guard crate is available.
// The code below is a placeholder that would be linted by diesel-guard.
fn main() {
// Imagine this is a migration that drops a column:
// ALTER TABLE users DROP COLUMN age;
println!("Migration would be flagged by diesel-guard as dangerous.");
}
What it printed when we ran it on Rust 1.98.1 (edition 2024)
Migration would be flagged by diesel-guard as dangerous.
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