Prerequisites to git bisect:
- Know how to build dask from source
- Known good commit eg: Dask version 2.4
- Known bad commit eg: Dask version 2.5
- Have a script/test that fails with bad commit but works with good commit
- Ensure that the test indeed fails with dask built from source with bad commit and passes for dask built from source with good commit. (In the existing environment)