History of build 4 changes

In crates/hub/src/lib.rs, lines 41–63 on 045f967db8f21b2aa9376e88e4e66ac266c50aa63685fa1bca479ffbe8cb8bf6. 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.