History of leaving 2 changes

In crates/flow/src/runner.rs, lines 728–730 on 5db09ccf23ab548976baca9ec6d610eca6a38d5054570e67f2d112da26c760e3. 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 728,730:crates/flow/src/runner.rs.