History of hex 1 change

In crates/flow-casfs/src/main.rs, lines 197–199 on 337afb8f604306f39990537f04b0259892164b1bf205bb374ff7b6d110b4e267. 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 197,199:crates/flow-casfs/src/main.rs.