History of Log::witnesses 1 change

In crates/hub/src/tlog.rs, lines 308–310 on v0.6.0. 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 308,310:crates/hub/src/tlog.rs.