moka 0.12.15 is a W-TinyLFU concurrent cache with sync and async variants; 141 unsafe sites span an intrusive LRU deque, a custom MiniArc, and a lock-free epoch-reclaimed hash table. One low-severity correctness finding: the is_dirty dirty-entry check reads two atomics with Relaxed ordering before an Acquire fence, imprecisely ordering the loads. No I/O, no FFI, no build-time execution.