0 -> 0
result=1
DF2788 E control:   fired=1, ret=0 (contract: 0)
DF2788 RESULT: stop=0 async=0 cancel=0 drain=0 ctl_fired=1 ctl_ret=0 BUG=1
DF2788 A stop:      pending 1 -> 0, ret=0 (contract: 1)
DF2788 B stop_async: pending 1 -> 0, ret=0 (contract: 1)
DF2788 C cancel:    pending 1 -> 0, ret=0 (contract: 1)
DF2788 D drain:     pending 1 -> 0, ret=0 (contract: 1)
DF2788 E control:   fired=1, ret=0 (contract: 0)
DF2788 RESULT: stop=0 async=0 cancel=0 drain=0 ctl_fired=1 ctl_ret=0 BUG=1