History of main 1 change

In crates/hub/build.rs, lines 4–20 on 0a56c5313bc09210ec663cf9063603a637c4ad9fccb58992ae09e470dc9b10fd. 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.