I have investigated the SEGV issue and it is not specific to python-opentracing. I have created a specific bugreport for it: 974051
https://bugs.debian.org/cgi-bin/bugreport.cgi?archive=yes&bug=974051 -- Fabrice BAUZAC-STEHLY PGP 015AE9B25DCB0511D200A75DE5674DEA514C891D