c5afe0a61e
Rollup of 4 pull requests Successful merges: - #117394 (use global cache when computing proof trees) - #117495 (Clarify `Unsize` documentation) - #117509 (Remove support for alias `-Z symbol-mangling-version`) - #117512 (Expand mem::offset_of! docs) r? `@ghost` `@rustbot` modify labels: rollup