== chunk delay 20 ms, 8 runs, app args: --chat.cancel-fix=false
run 1: upstream closed
run 2: upstream LEFT OPEN
run 3: upstream LEFT OPEN
run 4: upstream LEFT OPEN
run 5: upstream LEFT OPEN
run 6: upstream LEFT OPEN
run 7: upstream LEFT OPEN
run 8: upstream LEFT OPEN
upstream closed: 1 of 8, left open: 7 of 8

== chunk delay 20 ms, 8 runs, app args: (none)
run 1: upstream closed
run 2: upstream closed
run 3: upstream closed
run 4: upstream closed
run 5: upstream closed
run 6: upstream closed
run 7: upstream closed
run 8: upstream closed
upstream closed: 8 of 8, left open: 0 of 8