The Ubuntu 25.10 transition to using some Rust system utilities continues proving quite rocky. Beyond some early performance issues with Rust Coreutils, breakage for some executables, and broken unattended upgrades due to a Rust Coreutils bug, it’s also sudo-rs now causing Ubuntu developers some headaches. There are two moderate security issues affecting sudo-rs, the Rust version of sudo being used by Ubuntu 25.10.
Pardon me for being less intimately familiar with the project - but my point still stands, in terms of test focus. And yes, of course I know bugs are inevitable - I’ve been writing them for damn near two decades at this point.