ImportError while loading conftest '/build/python-ufolib2/src/ufoLib2-0.11.4/tests/conftest.py'.
tests/conftest.py:6: in <module>
    import ufoLib2
src/ufoLib2/__init__.py:3: in <module>
    from ufoLib2.objects import Font
src/ufoLib2/objects/__init__.py:1: in <module>
    from ufoLib2.objects.anchor import Anchor
src/ufoLib2/objects/anchor.py:5: in <module>
    from ufoLib2.objects.misc import AttrDictMixin
src/ufoLib2/objects/misc.py:22: in <module>
    from fontTools.misc.arrayTools import unionRect
E   ModuleNotFoundError: No module named 'fontTools'
==> ERROR: A failure occurred in check().
    Aborting...