History of main 1 change

In crates/hub/build.rs, lines 4–20 on cb71e18eb6f9a9fe3a2a4dfaa0edb640b3417e121ab52c52625f0e551d4c4a07. 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 4,20:crates/hub/build.rs.