What happened:

Using the latest (and greatest) master branch, checking if a char element is in a dask array seems to always return False.
With ints it works correctly.

What you expected to happen:

I was expecting the check to tell me the truth about the requested char being in the array.

Minimal Complete Verifiable Example:

import dask.array as da
'R' in da.array(['R', 'G', 'B'])
# evaluates to False

Anything else we need to know?:
This was working in 2.9.2, and works with ints at least.

Environment:

• Dask version: Master branch
• Python version: 3.8.5
• Operating System: RHEL8
• Install method (conda, pip, source): pip from github