running 18 tests
test collect_08_2 ... bench:         159 ns/iter (+/- 45)
test collect_08_4 ... bench:         121 ns/iter (+/- 28)
test collect_16_2 ... bench:         266 ns/iter (+/- 126)
test collect_16_4 ... bench:         226 ns/iter (+/- 28)
test collect_32_2 ... bench:         445 ns/iter (+/- 171)
test collect_32_4 ... bench:         401 ns/iter (+/- 131)
test extend_08_2  ... bench:          98 ns/iter (+/- 38)
test extend_08_4  ... bench:          94 ns/iter (+/- 15)
test extend_16_2  ... bench:         184 ns/iter (+/- 27)
test extend_16_4  ... bench:         174 ns/iter (+/- 22)
test extend_32_2  ... bench:         337 ns/iter (+/- 35)
test extend_32_4  ... bench:         326 ns/iter (+/- 40)
test push_08_2    ... bench:         100 ns/iter (+/- 56)
test push_08_4    ... bench:          88 ns/iter (+/- 12)
test push_16_2    ... bench:         172 ns/iter (+/- 32)
test push_16_4    ... bench:         176 ns/iter (+/- 26)
test push_32_2    ... bench:         337 ns/iter (+/- 56)
test push_32_4    ... bench:         314 ns/iter (+/- 58)

test result: ok. 0 passed; 0 failed; 0 ignored; 18 measured