He's probably using Docker with Mac/Win, which runs a linux VM. The rust compiler doesn't like being run in a VM like this.
It's fast on Linux where containers are native.
It's fast on Linux where containers are native.
Build times can pile up pretty quickly as systems grow over time. I have to say with that code base the big sin was some extreme macro misuse. It's still possible to see times like that without heavy macro usage though.
That was a native linux build on a fairly modern i7 laptop.