History of main 1 change

In crates/hub/build.rs, lines 4–20 on ced6d3afc5cf135158603e2acf3c2fa8473f93488c5a9320df2e064d80db00a1. 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.