History of main 1 change

In crates/jet/examples/scan.rs, lines 1–20 on 93feb1f3061af49f91048e2c770a46cfd99a49e79b1b4cd4d5eb5e6d071e3b32. 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.