Rollup merge of #151449 - GuillaumeGomez:regression-test-for-151411, r=lolbinarycat

[rustdoc] Add regression test for #151411

Fixes rust-lang/rust#151411.

Seems like the ICE was already solved by rust-lang/rust#151255. Well in any case, more regression tests won't hurt.

r? @lolbinarycat

Author: JonathanBrouwer