Source: networkx
Version: 2.4-3
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20200322 ftbfs-bullseye

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

Relevant part (hopefully):
>   File "/<<PKGBUILDDIR>>/examples/advanced/plot_parallel_betweenness.py", 
> line 53, in betweenness_centrality_parallel
>     bt_sc = p.map(_betmap,
>   File "/usr/lib/python3.8/multiprocessing/pool.py", line 364, in map
>     return self._map_async(func, iterable, mapstar, chunksize).get()
>   File "/usr/lib/python3.8/multiprocessing/pool.py", line 768, in get
>     raise self._value
>   File "/usr/lib/python3.8/multiprocessing/pool.py", line 537, in 
> _handle_tasks
>     put(task)
>   File "/usr/lib/python3.8/multiprocessing/connection.py", line 206, in send
>     self._send_bytes(_ForkingPickler.dumps(obj))
>   File "/usr/lib/python3.8/multiprocessing/reduction.py", line 51, in dumps
>     cls(buf, protocol).dump(obj)
> _pickle.PicklingError: Can't pickle <function _betmap at 0x7f31fa6831f0>: 
> attribute lookup _betmap on __main__ failed
> 
> generating gallery for auto_examples/advanced... [100%] 
> plot_iterated_dynamical_systems.py
> E: Build killed with signal TERM after 150 minutes of inactivity

The full build log is available from:
   http://qa-logs.debian.net/2020/03/22/networkx_2.4-3_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.

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