"rustup component add" not working

[davidspies]

$ rustup component add rls
error: component 'rls' for target 'x86_64-unknown-linux-gnu' is unavailable for download for channel nightly
Sometimes not all components are available in any given nightly. If you don't need the component, you can remove it with:

    rustup component remove --toolchain nightly --target x86_64-unknown-linux-gnu rls

[Xanewok]

That's because RLS and Rustfmt have both been missing from nightlies for quite some time: https://rust-lang.github.io/rustup-components-history/.

Once rust-lang/rust#81768 is merged, this should be fixed and the components should be available in tonight's nightly builds (roughly in 12 hours).