``` # old test vec::bench_flat_map_collect ... bench: 2,244,024 ns/iter (+/- 18,903) # new test vec::bench_flat_map_collect ... bench: 172,863 ns/iter (+/- 2,141) ```
``` # old test vec::bench_flat_map_collect ... bench: 2,244,024 ns/iter (+/- 18,903) # new test vec::bench_flat_map_collect ... bench: 172,863 ns/iter (+/- 2,141) ```