History of build 4 changes

In crates/hub/src/lib.rs, lines 41–63 on 3d1e74cdac76b716b793ea7d5f20f365e4bce8889818e7678be4a64d626a84bc. 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 41,63:crates/hub/src/lib.rs.