curl -v https://docs.rs/axum/latest/axum
...
Maximum (50) redirects followed
Redirects infinite to location /axum/latest/axum.
Visiting https://docs.rs/axum/latest/axum/ (with trailing slash) does work.
This is defintely a bug and definitely new since the last 24h, given I have it as a link in the documentation of github.com/plabayo/rama which has a daily Lychee runner checking my links. This is how I found it as also that tool reported the error: Too many redirects: error following redirect for url ... but only since the run of today (2025-11-13).