History of build 4 changes

In crates/hub/src/lib.rs, lines 41–63 on 76bc5a0583516542e19b76b914ddcb29f9da1078a9639f223dc46455ff3482ea. 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.