Bug#994294: python3-numba: armel tests fail: Symbol not found: __sync_fetch_and_add_4 [armel]

[Drew Parsons]

Package: python3-numba
Version: 0.52.0-4
Severity: normal
Control: affects -1 src:fenics-basix

numba tests are failing on debci for armel:

[*] Testing with python3.9:
/usr/lib/python3/dist-packages/numba/tests/npyufunc/test_gufunc.py:2: DeprecationWarning: numpy.core.umath_tests is an internal NumPy module and should not be imported. It will be removed in a future NumPy release.
  import numpy.core.umath_tests as ut
LLVM ERROR: Symbol not found: __sync_fetch_and_add_4
autopkgtest [22:29:24]: test python3-numba: -----------------------]
python3-numba        FAIL non-zero exit status 1


I found this error in numba's own tests while investigating a
numba-related error in the armel build for fenics-basix,
https://buildd.debian.org/status/fetch.php?pkg=fenics-basix&arch=armel&ver=0.3.0-1&stamp=1631674909&raw=0

Not certain at this point if the two errors are related or not.

Would a rebuild and upgrade to numba 0.54 be likely to fix the
problem[s]?

Drew