History of main 8 changes

In src/main.rs, lines 8–22 on ba160f60219ec658e83908930d89808a751fc9fc44a39c5afe381bbafae167b3. 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 8,22:src/main.rs.