Fix metaclass definition

5 jobs for ubm-algorithms in 10 minutes and 45 seconds (queued for 1 second)
Name Stage Failure
failed
build_macos_intel_38 Build
Tests failed for bob.bio.base-6.0.1b0-py38hf650925_15.conda - moving package to /Users/gitlab/builds/6eE8C-FW/0/bob/bob.bio.base/miniconda/conda-bld/broken
TESTS FAILED: bob.bio.base-6.0.1b0-py38hf650925_15.conda
Uploading artifacts for failed job
Uploading artifacts...
Runtime platform
arch=amd64 os=darwin pid=13080 revision=f761588f version=14.10.1
WARNING: coverage.xml: no matching files
ERROR: No files to upload
Cleaning up project directory and file based variables
ERROR: Job failed: exit status 1

failed
build_macos_intel_39 Build
Tests failed for bob.bio.base-6.0.1b0-py39hf650925_15.conda - moving package to /Users/gitlab/builds/6eE8C-FW/1/bob/bob.bio.base/miniconda/conda-bld/broken
TESTS FAILED: bob.bio.base-6.0.1b0-py39hf650925_15.conda
Uploading artifacts for failed job
Uploading artifacts...
Runtime platform
arch=amd64 os=darwin pid=13050 revision=f761588f version=14.10.1
WARNING: coverage.xml: no matching files
ERROR: No files to upload
Cleaning up project directory and file based variables
ERROR: Job failed: exit status 1

failed
build_linux_38 Build
ImportError: cannot import name '_is_pairwise' from 'sklearn.base' (/scratch/builds/bob/bob.bio.base/miniconda/conda-bld/bob.bio.base_1652713589090/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/lib/python3.8/site-packages/sklearn/base.py)
Tests failed for bob.bio.base-6.0.1b0-py38h44fe14c_15.conda - moving package to /scratch/builds/bob/bob.bio.base/miniconda/conda-bld/broken
TESTS FAILED: bob.bio.base-6.0.1b0-py38h44fe14c_15.conda
Uploading artifacts for failed job
Uploading artifacts...
WARNING: coverage.xml: no matching files
ERROR: No files to upload
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 1

failed
build_linux_39 Build
ImportError: cannot import name '_is_pairwise' from 'sklearn.base' (/scratch/builds/bob/bob.bio.base/miniconda/conda-bld/bob.bio.base_1652713587875/_test_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/lib/python3.9/site-packages/sklearn/base.py)
Tests failed for bob.bio.base-6.0.1b0-py39h44fe14c_15.conda - moving package to /scratch/builds/bob/bob.bio.base/miniconda/conda-bld/broken
TESTS FAILED: bob.bio.base-6.0.1b0-py39h44fe14c_15.conda
Uploading artifacts for failed job
Uploading artifacts...
WARNING: coverage.xml: no matching files
ERROR: No files to upload
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 1

failed
build_macos_arm_39 Build
Tests failed for bob.bio.base-6.0.1b0-py39h38e063e_14.conda - moving package to /Users/gitlab/builds/sAZPGTqW/0/bob/bob.bio.base/miniconda/conda-bld/broken
TESTS FAILED: bob.bio.base-6.0.1b0-py39h38e063e_14.conda
Uploading artifacts for failed job
Uploading artifacts...
Runtime platform
arch=arm64 os=darwin pid=91754 revision=f761588f version=14.10.1
WARNING: coverage.xml: no matching files
ERROR: No files to upload
Cleaning up project directory and file based variables
ERROR: Job failed: exit status 1