History of witnesses 2 changes

In crates/hub/src/tlog.rs, lines 725–729 on c7067c7bda562389bdf8e8e005ecce14a40ce4667862d998041d41551edec507. 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 725,729:crates/hub/src/tlog.rs.