Crash in TeXKeys extraction about refextract

[michamos]

looks like PyPDF2 is really brittle. The crash happens when trying to parse the PDF, so nothing we could easily fix. Maybe we should wrap calls to PyPDF2 in a big

try:
    # call PyPDF2
except Exception as e:
    # log the exception

[kaplun]

Yeah exactly.

[michamos]

we wouldn't lose much anyway: texkey extraction is useful only for articles using Inspire texkeys (and maybe other platforms like ADS in the future). Those will in the vast majority of cases be produced by a standard TeX pipeline, which we know works well with PyPDF2.