History of build 4 changes

In crates/hub/src/lib.rs, lines 40–62 on c40c2d3edb51ad93af38f6aab2cdfc4c4437b8c8a68d40edd1d10dcccd76f44f. 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 40,62:crates/hub/src/lib.rs.