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From: Graham Inggs &lt;ginggs@debian.org&gt;
Date: Sat, 28 Feb 2026 16:01:33 -0100
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Subject: openstructure: FTBFS with Python 3.14: tests segfault
To: Debian Bug Tracking System &lt;submit@bugs.debian.org&gt;
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Source: openstructure
Version: 2.11.1-1
Severity: important
Tags: ftbfs forky sid
User: debian-python@lists.debian.org
Usertags: python3.14

Hi Maintainer

openstructure will FTBFS once Python 3.14 is the default version in
Debian due to segmentation faults in the tests.  I've copied the
output from a failing autopkgtest log below, as a build log is even
less helpful.

Regards
Graham


454s autopkgtest [16:06:47]: test python: [-----------------------
454s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5017 Segmentation fault         (core dumped) python3 ${TEST}
455s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5024 Segmentation fault         (core dumped) python3 ${TEST}
455s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5026 Segmentation fault         (core dumped) python3 ${TEST}
455s /tmp/autopkgtest.61Ffy1/build.0c8/src/modules/bindings/tests/test_blast.py:81:
SyntaxWarning: &quot;\d&quot; is an invalid escape sequence. Such sequences will
not work in the future. Did you mean &quot;\\d&quot;? A raw string is also an
option.
455s   re_v = re.compile('\d+\.\d+\.\d+')
455s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5029 Segmentation fault         (core dumped) python3 ${TEST}
455s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5031 Segmentation fault         (core dumped) python3 ${TEST}
455s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5033 Segmentation fault         (core dumped) python3 ${TEST}
455s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5035 Segmentation fault         (core dumped) python3 ${TEST}
455s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5037 Segmentation fault         (core dumped) python3 ${TEST}
455s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5039 Segmentation fault         (core dumped) python3 ${TEST}
455s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5041 Segmentation fault         (core dumped) python3 ${TEST}
456s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5043 Segmentation fault         (core dumped) python3 ${TEST}
456s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5045 Segmentation fault         (core dumped) python3 ${TEST}
456s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5047 Segmentation fault         (core dumped) python3 ${TEST}
456s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5049 Segmentation fault         (core dumped) python3 ${TEST}
456s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5051 Segmentation fault         (core dumped) python3 ${TEST}
456s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5054 Segmentation fault         (core dumped) python3 ${TEST}
456s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5056 Segmentation fault         (core dumped) python3 ${TEST}
456s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5058 Segmentation fault         (core dumped) python3 ${TEST}
456s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5060 Segmentation fault         (core dumped) python3 ${TEST}
457s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5063 Segmentation fault         (core dumped) python3 ${TEST}
457s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5066 Segmentation fault         (core dumped) python3 ${TEST}
457s Traceback (most recent call last):
457s   File &quot;/tmp/autopkgtest.61Ffy1/build.0c8/src/modules/gfx/tests/test_entity.py&quot;,
line 1, in &lt;module&gt;
457s     eh=io.LoadPDB(&quot;1crn&quot;,remote=True)
457s        ^^
457s NameError: name 'io' is not defined. Did you mean: 'id'? Or did
you forget to import 'io'?
457s /tmp/autopkgtest.61Ffy1/build.0c8/src/debian/tests/python: line
8:  5070 Segmentation fault         (core dumped) python3 ${TEST}
457s Traceback (most recent call last):
457s   File &quot;/tmp/autopkgtest.61Ffy1/build.0c8/src/modules/gfx/tests/test_gost_export.py&quot;,
line 1, in &lt;module&gt;
457s     import desost_util as util
457s ModuleNotFoundError: No module named 'desost_util'
457s Traceback (most recent call last):
457s   File &quot;/tmp/autopkgtest.61Ffy1/build.0c8/src/modules/gfx/tests/test_gost_import.py&quot;,
line 3, in &lt;module&gt;
457s     with open(&quot;test.gost&quot;,&quot;rb&quot;) as gf:
457s          ~~~~^^^^^^^^^^^^^^^^^^
457s FileNotFoundError: [Errno 2] No such file or directory: 'test.gost'
]