# HashSet test(LAST=21474836) making HashSet done. elapsed=9365 finding done. elapsed=3048
# HashSet test(LAST=21474836) making HashSet done. elapsed=10852 finding done. elapsed=1954
# HashSet test(LAST=21474836) making HashSet done. elapsed=7350 finding done. elapsed=2214
# ImmutableSet test(LAST=21474836) making HashSet done. elapsed=7480 copying to ImmutableSet done. elapsed=2513 finding done. elapsed=1450
# ImmutableSet test(LAST=21474836) making HashSet done. elapsed=7550 copying to ImmutableSet done. elapsed=2500 finding done. elapsed=1453
# ImmutableSet test(LAST=21474836) making HashSet done. elapsed=10664 copying to ImmutableSet done. elapsed=1257 finding done. elapsed=7959