History of walk 1 change

In crates/flow/src/cache.rs, lines 482–494 on cedd12342afac41162c56d51b436c8260d763a4a492f11a8bad6efa04094f25d. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 482,494:crates/flow/src/cache.rs.