History of build 6 changes

In crates/hub/src/lib.rs, lines 46–70 on b210727578e88cb6d475b2ade065de6cbba939321382c491ea36e361a305d246. 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 46,70:crates/hub/src/lib.rs.