History of bench 1 change

In crates/flow/src/facts.rs, lines 72–94 on f1d14bb6ec2bdec471b64441d867594e5f5bc8a6e3a2b3fe99dddd892a1fac65. 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.