History of hermetic 1 change

In crates/hub/tests/flow.rs, lines 18–26 on v0.6.1. 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 18,26:crates/hub/tests/flow.rs.