History of main 8 changes

In src/main.rs, lines 8–22 on b66a5c47cc618678127aee18cc04538accf895d108f3f6e2a37757c6b5eac92c. 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.