…
[dependencies]
bit-vec = "0.5.0"
bit-set = "0.5.0"

extern crate bit_set;
extern crate bit_vec;
use bit_set::BitSet;
use bit_vec::BitVec;

error[E0432]: unresolved import `alloc::Vec`
--> …bit-vec-0.5.0/src/lib.rs
…
no `Vec` in the root. Did you mean to use `vec`?

error[E0432]: unresolved import `bit_vec`  `bit_set`
…
Did you mean `self::bit_vec  bit_set`?