History of JobGroup::kill 1 change

In crates/flow/src/syscall.rs, lines 415–417 on 0aac9efcbeea6c5162f1ec8b3b423cd718702bd3af0cd44d5409fc2d33ca2db8. 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.