52     Base(usize),  enumerator
96             0..=8 => Slab::Base(0),  in get_slab()
97             9..=16 => Slab::Base(1),  in get_slab()
98             17..=32 => Slab::Base(2),  in get_slab()
99             33..=64 => Slab::Base(3),  in get_slab()
100             65..=128 => Slab::Base(4),  in get_slab()
101             129..=256 => Slab::Base(5),  in get_slab()
102             257..=512 => Slab::Base(6),  in get_slab()
103             513..=1024 => Slab::Base(7),  in get_slab()
104             1025..=2048 => Slab::Base(8),  in get_slab()
161             Slab::Base(idx) => self.small_slabs[idx].allocate(layout),  in allocate()
180             Slab::Base(idx) => self.small_slabs[idx].deallocate(ptr, layout, slab_callback),  in deallocate()
195             Slab::Base(idx) => {  in refill()