=== poetry-0001: show --tree packages_in_tree list O(N) membership check ===
N=100   k=100  : defective=0.092ms  fixed=0.004ms  speedup=24.2x
N=500   k=500  : defective=2.223ms  fixed=0.023ms  speedup=98.5x
N=1000  k=1000 : defective=8.663ms  fixed=0.046ms  speedup=189.5x
N=2000  k=2000 : defective=34.939ms  fixed=0.096ms  speedup=362.5x

