History of JobGroup::kill 1 change

In crates/flow/src/syscall.rs, lines 415–417 on e6949d87205b25ba552afd5865dc144149d4dc8a45031cf177ba3777554de2f6. 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 415,417:crates/flow/src/syscall.rs.