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.
The biggest problem with Rust are its users. They somehow think that having a safe memory access means fewer bugs. While it only means fewer memory management related bugs. Which honestly isn’t even a problem with modern C++.