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Background: in 2019 in 4dc1a7f0 (tox += ThreadSanitizer, AddressSanitizer,
Python debug builds) I've added ThreadSanitizer and AddressSanitizer to our
test build matrix. That was done in order to help catching concurrency issues
while doing quality assurance and it indeed worked well(*). However AddressSanitizer
was added with disabled memory leak detection, because at that time there were
tons of various allocations done by Python itself, that were not released on
Python shutdown. So leak reporting pass was disabled to avoid huge non-pygolang
related printouts.

5 years later Pygolang is used by various projects, including in XLTE, where, in
particular, it is used to organize 100Hz polling of Amarisoft eNodeB service to
retrieve information about flows on Data Radio Bearers:

kirr/xlte@2a016d48
https://lab.nexedi.com/kirr/xlte/-/blob/8e606c64/amari/drb.py

And everything works relatively well except that recently Joan...