Rollup merge of #128928 - ojeda:ci-rfl-more-tools, r=Kobzol

CI: rfl: add more tools and steps

This will add some time for the tool building -- the actual steps should be quick, though, and allows us to cover quite a few more tools and unstable features in use.

Please see the individual commits for a few details.

Cc: `@GuillaumeGomez` `@tgross35`
r? `@Kobzol`
try-job: x86_64-rust-for-linux