Nightlies are broken...... but for another reason

https://gitlab.idiap.ch/bob/bob.nightlies/-/jobs/152189

conda.exceptions.UnsatisfiableError: The following specifications were found to be in conflict:
  - bob-devel=2018.10.16 -> cudatoolkit==9.0=h13b8566_0
  - bob-devel=2018.10.16 -> scikit-learn==0.19.2=py36h4989274_0
  - numpy
Use "conda info <package>" to see the dependencies for each package.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/local/builds/bob/bob.nightlies/miniconda/bin/conda-build", line 11, in <module>
    sys.exit(main())
  File "/local/builds/bob/bob.nightlies/miniconda/lib/python3.7/site-packages/conda_build/cli/main_build.py", line 439, in main
    execute(sys.argv[1:])
  File "/local/builds/bob/bob.nightlies/miniconda/lib/python3.7/site-packages/conda_build/cli/main_build.py", line 430, in execute
    verify=args.verify, variants=args.variants)
  File "/local/builds/bob/bob.nightlies/miniconda/lib/python3.7/site-packages/conda_build/api.py", line 201, in build
    notest=notest, need_source_download=need_source_download, variants=variants)
  File "/local/builds/bob/bob.nightlies/miniconda/lib/python3.7/site-packages/conda_build/build.py", line 2275, in build_tree
    notest=notest,
  File "/local/builds/bob/bob.nightlies/miniconda/lib/python3.7/site-packages/conda_build/build.py", line 1398, in build
    raise e
  File "/local/builds/bob/bob.nightlies/miniconda/lib/python3.7/site-packages/conda_build/build.py", line 1389, in build
    channel_urls=tuple(m.config.channel_urls))
  File "/local/builds/bob/bob.nightlies/miniconda/lib/python3.7/site-packages/conda_build/environ.py", line 751, in get_install_actions
    raise DependencyNeedsBuildingError(exc, subdir=subdir)
conda_build.exceptions.DependencyNeedsBuildingError: Unsatisfiable dependencies for platform linux-64: {'cudatoolkit==9.0=h13b8566_0', 'numpy', 'scikit-learn==0.19.2=py36h4989274_0'}

As a consequence, ALL builds are broken