terribly sorry, I don't have much information to go off on this other than the build logs from deadsnakes.

I retried this build twice and it seems it consistently fails in this position:

https://launchpadlibrarian.net/537139233/buildlog_ubuntu-bionic-armhf.python3.10_3.10.0~b1-1+bionic2_BUILDING.txt.gz

The relevant logs from the build:

```
./python -m test --pgo --timeout=1200 || true
0:00:00 load avg: 2.37 Run tests sequentially (timeout: 20 min)
0:00:00 load avg: 2.37 [ 1/44] test_array
0:00:11 load avg: 2.23 [ 2/44] test_base64
0:00:15 load avg: 2.13 [ 3/44] test_binascii
0:00:16 load avg: 2.13 [ 4/44] test_binop
0:00:17 load avg: 2.13 [ 5/44] test_bisect
0:00:18 load avg: 2.13 [ 6/44] test_bytes
0:01:18 load avg: 1.41 [ 7/44] test_bz2 -- test_bytes passed in 1 min
0:01:25 load avg: 1.35 [ 8/44] test_cmath
0:01:28 load avg: 1.35 [ 9/44] test_codecs
0:01:52 load avg: 1.23 [10/44] test_collections
0:02:10 load avg: 1.16 [11/44] test_complex
0:02:16 load avg: 1.15 [12/44] test_dataclasses
0:02:23 load avg: 1.14 [13/44] test_datetime
0:03:18 load avg: 1.09 [14/44] test_decimal -- test_datetime passed in 54.9 sec
0:05:06 load avg: 1.01 [15/44] test_difflib -- test_decimal passed in 1 min 47 sec
0:05:24 load avg: 1.01 [16/44] test_embed
0:05:27 load avg: 1.01 [17/44] test_float
0:05:32 load avg: 1.01 [18/44] test_fstring
0:05:43 load avg: 1.00 [19/44] test_functools
0:05:47 load avg: 1.00 [20/44] test_generators
0:05:51 load avg: 1.00 [21/44] test_hashlib
Fatal Python error: Bus error

Current thread 0xf7901220 (most recent call first):
  File "/<<PKGBUILDDIR>>/Lib/test/test_hashlib.py", line 842 in test_gil
  File "/<<PKGBUILDDIR>>/Lib/unittest/case.py", line 549 in _callTestMethod
  File "/<<PKGBUILDDIR>>/Lib/unittest/case.py", line 592 in run
  File "/<<PKGBUILDDIR>>/Lib/unittest/case.py", line 652 in __call__
  File "/<<PKGBUILDDIR>>/Lib/unittest/suite.py", line 122 in run
  File "/<<PKGBUILDDIR>>/Lib/unittest/suite.py", line 84 in __call__
  File "/<<PKGBUILDDIR>>/Lib/unittest/suite.py", line 122 in run
  File "/<<PKGBUILDDIR>>/Lib/unittest/suite.py", line 84 in __call__
  File "/<<PKGBUILDDIR>>/Lib/unittest/suite.py", line 122 in run
  File "/<<PKGBUILDDIR>>/Lib/unittest/suite.py", line 84 in __call__
  File "/<<PKGBUILDDIR>>/Lib/test/support/testresult.py", line 169 in run
  File "/<<PKGBUILDDIR>>/Lib/test/support/__init__.py", line 959 in _run_suite
  File "/<<PKGBUILDDIR>>/Lib/test/support/__init__.py", line 1082 in run_unittest
  File "/<<PKGBUILDDIR>>/Lib/test/libregrtest/runtest.py", line 210 in _test_module
  File "/<<PKGBUILDDIR>>/Lib/test/libregrtest/runtest.py", line 246 in _runtest_inner2
  File "/<<PKGBUILDDIR>>/Lib/test/libregrtest/runtest.py", line 282 in _runtest_inner
  File "/<<PKGBUILDDIR>>/Lib/test/libregrtest/runtest.py", line 154 in _runtest
  File "/<<PKGBUILDDIR>>/Lib/test/libregrtest/runtest.py", line 194 in runtest
  File "/<<PKGBUILDDIR>>/Lib/test/libregrtest/main.py", line 423 in run_tests_sequential
  File "/<<PKGBUILDDIR>>/Lib/test/libregrtest/main.py", line 521 in run_tests
  File "/<<PKGBUILDDIR>>/Lib/test/libregrtest/main.py", line 694 in _main
  File "/<<PKGBUILDDIR>>/Lib/test/libregrtest/main.py", line 641 in main
  File "/<<PKGBUILDDIR>>/Lib/test/libregrtest/main.py", line 719 in main
  File "/<<PKGBUILDDIR>>/Lib/test/__main__.py", line 2 in <module>
  File "/<<PKGBUILDDIR>>/Lib/runpy.py", line 86 in _run_code
  File "/<<PKGBUILDDIR>>/Lib/runpy.py", line 196 in _run_module_as_main
```