Dependency hell installing mamba

conda install -n base -c conda-forge mamba

3 hours and still running:

Retrieving notices: …working… done
Collecting package metadata (current_repodata.json): done
Solving environment: unsuccessful initial attempt using frozen solve. Retrying with flexible solve.
Solving environment: unsuccessful attempt using repodata from current_repodata.json, retrying with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: unsuccessful initial attempt using frozen solve. Retrying with flexible solve.
Solving environment: \

The irony is that I’m installing mamba to get away from the klunky and slow conda. Is this a feature or a bug?