`doc.rust-lang.org/nightly/nightly-rustc` links are broken

[smoelius]

Links with the above prefix are not resolving. Is this a temporary problem, or have nightly docs been deprecated?

I ask because, for all of the urls I have tried, the corresponding std and beta versions resolve.

Example url causing a problem: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/mir/enum.MirPhase.html

Taken from here:

rust/library/core/src/intrinsics/mir.rs

Line 48 in 22b2712

//! https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/mir/enum.MirPhase.html

[Jules-Bertholet]

@rustbot label A-docs C-bug T-infra

[ChrisDenton]

#117430