`rls` no longer builds after rust-lang/rust#60827

[rust-highfive]

Hello, this is your friendly neighborhood mergebot.
After merging PR #60827, I observed that the tool rls no longer builds.
A follow-up PR to the repository https://github.com/rust-lang/rls is needed to fix the fallout.

cc @oli-obk, do you think you would have time to do the follow-up work?
If so, that would be great!

cc @nnethercote, the PR reviewer, and @rust-lang/compiler -- nominating for prioritization.

[saifali96]

@rust-highfive I just tried to update my rustc nightly, it breaks and says rls component is not available:

PS D:\work\rustexps\Rocket> rustup update
info: syncing channel updates for 'stable-x86_64-pc-windows-msvc'
info: syncing channel updates for 'nightly-x86_64-pc-windows-msvc'
info: latest update on 2019-05-27, rust version 1.36.0-nightly (5187be620 2019-05-26)
error: component 'rls' for target 'x86_64-pc-windows-msvc' is unavailable for download for channel 'nightly'

Could the issue be also related to this one?

[oli-obk]

yes, very much related. I had a fix yesterday, but it didn't get through in time for todays nightly. Try again tomorrow