History of main 1 change

In crates/jet/examples/scan.rs, lines 1–20 on 732b4de405e6c078b6de84031e7815b6f5c9faa92046af557ba6d5b2a2341021. 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 1,20:crates/jet/examples/scan.rs.