`ccache icecream` with default configuration means that the build servers have to duplicate work for the common case where multiple clients build the same artif

`ccache icecream` with default configuration means that the build servers have to duplicate work for the common case where multiple clients build the same artifact. Now, maybe remote caching is reliable nowadays, despite its inevitable reputation (given that it wasn't designed for it). But it's still more moving parts, and the magic is in ccache not icecream too.