Could rust have been used on machines from the 80's 90's?

TL;DR Do you think had memory safety being thought or engineered earlier the technology of its time would make rust compile times feasible? Can you think of anything which would have made rust unsuitable for the time? Because if not we can turn back in time and bring rust to everyone.

I just have a lot of free time and I was thinking that rust compile times are slow for some and I was wondering if I could fit a rust compiler in a 70mhz 500kb ram microcontroller -idea which has got me insulted everywhere- and besides being somewhat unnecessary I began wondering if there are some technical limitations which would make the existence of a rust compiler dependent on powerful hardware to be present -because of ram or cpu clock speed- as lifetimes and the borrow checker take most of the computations from the compiler take place.