[$] Rustaceans at the border

Support for developing in the Rustlanguage is headed toward the kernel, though just when itwill land in the mainline is yet to be determined. The Rust patches areprogressing, though, and beginning to attract attention from beyond thekernel community. When two languages - and two different developmentcommunities - come together, the result can be a sort of cultural clash.Some early signs of that are appearing with regard to Rust in the kernel;if the resulting impedance mismatches can be worked out, the result couldbe a better development environment for everybody involved.