Version 1.0 has been ok. Possible related to #221 The method `_clean_text_signature` seems to be also receiving classes and not being able to handle them. Added few print to debug. These are the result: ```python print(sig) # pytest.importorskip.__text_signature__ print(type(sig)) # <class 'pytest.importorskip.__text_signature__'> print(start_pattern.search(sig)) # CRASH: TypeError ``` See the failing job: https://gitlab.com/secml/secml/-/jobs/622655243 Still investigating any possible source of the problem from our side. Installed Sphinx modules: ``` 'sphinx.ext.autodoc', 'sphinx.ext.autosummary', 'sphinx.ext.viewcode', 'sphinx.ext.intersphinx', 'sphinx.ext.imgmath', 'matplotlib.sphinxext.plot_directive', 'numpydoc', 'm2r', 'nbsphinx', 'nbsphinx_link' ``` Installed libraries: ``` numpydoc==1.1.0 Sphinx==2.4.4 sphinx-rtd-theme==0.5.0 ```