Commit 50be2a5
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Auto merge of #140023 - cjgillot:arena-try-alloc, r=BoxyUwU
Introduce Arena::try_alloc_from_iter.
`alloc_from_iter` already collects the iterator for reentrancy. So adding an early exit for a fallible iterator integrates naturally into the code. This avoids the other solution to allocate and dump the allocation.0 file changed
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