I'm not sure how one would define "adaptation" (presumably meaning "adoption", ie: how widely used something is) in a way that could have debian have a higher adoption than rust: rust ships in programs within many linux distributions and other operating systems (mac os and windows). rust is used in widely used programs/kernels (Firefox, Chrome, Linux itself, Windows) that span further than debian itself.

All this is to say: a large amount of debian users likely are using rust, and an even larger amount of non-debian users is likely to be using rust.