Unlike Go, many Rust installs happen not through a package manager, but through Rustup. That's a perfect avenue to add useful opt-in telemetry, while making the

Unlike Go, many Rust installs happen not through a package manager, but through Rustup. That's a perfect avenue to add useful opt-in telemetry, while making the privacy fundamentalists happy. If somebody is installing Rust interactively through Rustup, ask them whether they want telemetry or not, if they're installing from anywhere else, assume they don't. It feels like the perfect compromise for Rust, there's no way to have telemetry on without specifically agreeing to it, but there's a large enough percentage of users who would see that prompt to still make the limited opt-in data useful.