[Retra]

If there's a canonical, obvious, and low maintenance way to do something that there's a common need for, then there's no reason it shouldn't be in std. If it needs to be hacked at and redesigned every few years, then yeah, leave it out.

[simias]

That's not really the Rust way, for instance things like timekeeping and random number generation are delegated to external crates. Given how trivial it is to add dependencies thanks to cargo it's not really an issue in practice, even if I do think that they go a bit overboard at times (time really ought to be in std IMO, especially since there's already a rather useless std::time module).