When building bitvec from source, I'm getting a build error and after running git bisect I could trace it back down to this commit -> 47d6e19

Here is the message I'm receiving

error[E0034]: multiple applicable items in scope
  --> src/mem.rs:28:19
   |
28 |     const INDX: u8 = Self::BITS.trailing_zeros() as u8;
   |                      ^^^^^^^^^^ multiple `BITS` found

OS: macOS Big Sur 10.16 20C69 x86_64
cargo --version: cargo 1.36.0 (c4fcfb725 2019-05-15)

Note that I'm using Big Sur which may play a role in the cause of this error.