History of build 4 changes

In crates/hub/src/lib.rs, lines 42–64 on 9008bf6c2b8cab8411441fc4103ce3e93d9a3ccd68af20d0a7e78ab4c244a119. 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 42,64:crates/hub/src/lib.rs.