This patch series allows cargo-build-system to fully build and test some of these packages. These are small rust packages though. Probably were added without verifying if the crate could get built or not. So these patches are mostly one liners removing `#:skip-build? #t'. I did a quick pass over the crates to find the simpler ones, there are more for sure but don't want to send hundreds of patches. I'll tackle these easy ones first and then I'll proceed with most complex ones on further patches that require adding new packages and modifying existing ones. I've tested all of these crates on x86_64 and they build without problems. Maxime I've CCed you as this could relate to antioxidant (as it requires crates to build, am I right?). — Jean-Pierre De Jesus DIAZ