When generating docs for the typenum crate on the latest nightly, rustdoc gets stuck on the "Building" phase.

cargo +nightly doc
   Compiling typenum v1.16.0 (C:\Users\hpmas\Documents\Projects\contributing\typenum)
 Documenting typenum v1.16.0 (C:\Users\hpmas\Documents\Projects\contributing\typenum)
    Building [==================>          ] 2/3: typenum(doc)

Works as normal on on nightly-2023-06-09, but freezes on the latest nightly (2023-06-10).

Reproducible Steps

Using the latest nightly:

1. clone typenum repo git clone https://github.com/paholg/typenum
2. cd typenum
3. cargo +nightly doc