[ghostpepper]

Just as a data point, I have a new AMD 7840U-based laptop and I built rust in 38 mins, and firefox in 27.

[HybridCurve]

Truthfully, I never actually got to the rust build portion of the install. Rust required it's own patched version of LLVM to build, and I stopped there since I felt it was not worth compiling both, just for the one.