regression: attribute should be applied to struct/enum/union

[Mark-Simulacrum]

• https://crater-reports.s3.amazonaws.com/beta-1.83-3/beta-2024-10-19/reg/list_tools-0.1.9-features/log.txt

Likely needs compat-notes, please tag relnotes if so.

[fmease]

Expected and accepted regression. See PR #129422 which is already tagged with relnotes.
Furthermore, here I already pinged the author of this crate (the code isn't hosted on GH, therefore we couldn't open a PR).
Lastly, we already have a relnotes-tracking-issue here: #129958.

Closing in favor of #129958.