I found Canonicalized path was dropped error happening in the CI.
https://github.com/rolldown/rolldown/actions/runs/18068673701/job/51415440214#step:6:599
I wonder if this happens because this code may only have one weak reference after the Arc::downgrade call and before the weak.upgrade() call.