History of Picker::len 1 change

In crates/jet/src/swarm.rs, lines 201–203 on 21a3ea4aab8894f35a130036a31837139627f5b0e03bf6f0180f9abc9a0be727. 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 201,203:crates/jet/src/swarm.rs.