History of bench 1 change

In crates/flow/src/facts.rs, lines 72–94 on 7cbe4369d492843fb7bf46522fa1532538d258a1d6360477d1c4ea1e8ae94131. 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 72,94:crates/flow/src/facts.rs.