calibrating: one run with no second commit ...
  a background re-index takes about 0.388s here
delay=  0.078s  trial   1/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.078s  trial   2/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.078s  trial   3/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.078s  trial   4/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.078s  trial   5/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.078s  trial   6/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.078s  trial   7/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.078s  trial   8/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.194s  trial   1/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.194s  trial   2/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.194s  trial   3/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.194s  trial   4/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.194s  trial   5/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.194s  trial   6/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.194s  trial   7/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.194s  trial   8/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.291s  trial   1/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.291s  trial   2/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.291s  trial   3/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.291s  trial   4/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.291s  trial   5/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.291s  trial   6/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.291s  trial   7/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.291s  trial   8/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.342s  trial   1/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.342s  trial   2/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.342s  trial   3/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.342s  trial   4/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.342s  trial   5/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.342s  trial   6/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.342s  trial   7/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.342s  trial   8/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.357s  trial   1/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.357s  trial   2/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.357s  trial   3/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.357s  trial   4/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.357s  trial   5/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.357s  trial   6/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.357s  trial   7/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.357s  trial   8/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.369s  trial   1/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.369s  trial   2/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.369s  trial   3/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.369s  trial   4/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.369s  trial   5/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.369s  trial   6/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.369s  trial   7/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.369s  trial   8/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.377s  trial   1/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.377s  trial   2/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.377s  trial   3/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.377s  trial   4/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.377s  trial   5/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.377s  trial   6/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.377s  trial   7/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.377s  trial   8/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.384s  trial   1/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.384s  trial   2/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.384s  trial   3/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.384s  trial   4/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.384s  trial   5/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.384s  trial   6/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.384s  trial   7/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.384s  trial   8/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.388s  trial   1/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.388s  trial   2/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.388s  trial   3/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.388s  trial   4/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.388s  trial   5/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.388s  trial   6/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.388s  trial   7/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.388s  trial   8/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.392s  trial   1/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.392s  trial   2/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.392s  trial   3/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.392s  trial   4/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.392s  trial   5/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.392s  trial   6/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.392s  trial   7/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.392s  trial   8/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.400s  trial   1/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.400s  trial   2/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.400s  trial   3/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.400s  trial   4/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.400s  trial   5/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.400s  trial   6/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.400s  trial   7/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.400s  trial   8/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.419s  trial   1/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.419s  trial   2/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.419s  trial   3/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.419s  trial   4/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.419s  trial   5/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.419s  trial   6/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.419s  trial   7/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.419s  trial   8/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.466s  trial   1/8  inside=True   stranded=False  found=True   staging=ok  
delay=  0.466s  trial   2/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.466s  trial   3/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.466s  trial   4/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.466s  trial   5/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.466s  trial   6/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.466s  trial   7/8  inside=False  stranded=False  found=True   staging=ok  
delay=  0.466s  trial   8/8  inside=False  stranded=False  found=True   staging=ok  

104 trials, 77 of them with the second commit inside the run, 0 captured  (staging lost: 0, stranded: 0)
NOT REPRODUCED under deliberate stress. That is a result: file it, and W-140 row 21 stops waiting for a flake that a targeted sweep cannot summon.
