History of main 1 change

In crates/jet/examples/scan.rs, lines 1–20 on 8302cca90c950a58375b3afb0a8b80bddc5a25718fdfc4b22959d954ec8b54c3. 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.