That PR is about buggy or niche systems. VMs lying about their clocks, CPUs with faulty firmware revisions, kernel bugs. Rust is just going the extra mile to up

That PR is about buggy or niche systems. VMs lying about their clocks, CPUs with faulty firmware revisions, kernel bugs. Rust is just going the extra mile to uphold its guarantee even when the OS fails to do its job. It would have been legitimate to just say that in the face of broken systems you get broken behavior, GIGO, but it's difficult to convey that and most users aren't even aware that their systems are broken so it provided better user experience to paper over the bug rather than surfacing it. On most systems CLOCK_MONOTONIC actually is monotonic. It's not necessarily steady or providing SI seconds, but its monotonic. You'll need stuff like GPS if you want a monotonic, steady clock synchronized with other clocks.