Bug#1135505: mpi4py: FTBFS: exception: type object 'ExceptionDocumenterCustom' has no attribute 'startswith'

Santiago Vila sanvila at debian.org
Sat May 2 00:29:24 BST 2026


Package: src:mpi4py
Version: 4.1.1-8
Severity: serious
Tags: ftbfs forky sid

Dear maintainer:

During a rebuild of all packages in unstable, this package failed to build.

Below you will find the last part of the build log (probably the most
relevant part, but not necessarily). If required, the full build log
is available here:

https://people.debian.org/~sanvila/build-logs/202605/

About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you cannot reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:mpi4py, so that this is still
visible in the BTS web page for this package.

Thanks.

--------------------------------------------------------------------------------
[...]
 debian/rules clean
dh clean --buildsystem pybuild
   dh_auto_clean -O--buildsystem=pybuild
   debian/rules execute_after_dh_auto_clean
make[1]: Entering directory '/<<PKGBUILDDIR>>'
rm -rf `find -name build -type d`
rm -rf `find -name _build -type d`
rm -rf docs/source/reference
: # Remove Cython generated files
rm -f src/mpi4py.MPE.c src/mpi4py.MPI.c src/include/mpi4py/mpi4py.MPI_api.h
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
   dh_autoreconf_clean -O--buildsystem=pybuild
   dh_clean -O--buildsystem=pybuild
 debian/rules binary
dh binary --buildsystem pybuild

[... snipped ...]

 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
ok
testGetGroup (test_win.TestWinCreateDynamicWorld.testGetGroup) ... testGetGroup (test_win.TestWinCreateDynamicWorld.testGetGroup) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetErrhandler (test_win.TestWinCreateDynamicWorld.testGetSetErrhandler) ... ok
testGetSetErrhandler (test_win.TestWinCreateDynamicWorld.testGetSetErrhandler) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetInfo (test_win.TestWinCreateDynamicWorld.testGetSetInfo) ... ok
testGetSetInfo (test_win.TestWinCreateDynamicWorld.testGetSetInfo) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetName (test_win.TestWinCreateDynamicWorld.testGetSetName) ... ok
testGetSetName (test_win.TestWinCreateDynamicWorld.testGetSetName) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testMemory (test_win.TestWinCreateDynamicWorld.testMemory) ... ok
[sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
testMemory (test_win.TestWinCreateDynamicWorld.testMemory) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testMemoryModel (test_win.TestWinCreateDynamicWorld.testMemoryModel) ... ok
testMemoryModel (test_win.TestWinCreateDynamicWorld.testMemoryModel) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testPickle (test_win.TestWinCreateDynamicWorld.testPickle) ... ok
testPickle (test_win.TestWinCreateDynamicWorld.testPickle) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
ok
testPyProps (test_win.TestWinCreateDynamicWorld.testPyProps) ... testPyProps (test_win.TestWinCreateDynamicWorld.testPyProps) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testSharedQuery (test_win.TestWinCreateDynamicWorld.testSharedQuery) ... ok
testSharedQuery (test_win.TestWinCreateDynamicWorld.testSharedQuery) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testAttributes (test_win.TestWinCreateSelf.testAttributes) ... ok
testAttributes (test_win.TestWinCreateSelf.testAttributes) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testCreateFlavor (test_win.TestWinCreateSelf.testCreateFlavor) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testCreateFlavor (test_win.TestWinCreateSelf.testCreateFlavor) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetAttr (test_win.TestWinCreateSelf.testGetAttr) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetAttr (test_win.TestWinCreateSelf.testGetAttr) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetGroup (test_win.TestWinCreateSelf.testGetGroup) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetErrhandler (test_win.TestWinCreateSelf.testGetSetErrhandler) ... ok
testGetGroup (test_win.TestWinCreateSelf.testGetGroup) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetInfo (test_win.TestWinCreateSelf.testGetSetInfo) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetErrhandler (test_win.TestWinCreateSelf.testGetSetErrhandler) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetName (test_win.TestWinCreateSelf.testGetSetName) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetInfo (test_win.TestWinCreateSelf.testGetSetInfo) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testMemory (test_win.TestWinCreateSelf.testMemory) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetName (test_win.TestWinCreateSelf.testGetSetName) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testMemoryModel (test_win.TestWinCreateSelf.testMemoryModel) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testPickle (test_win.TestWinCreateSelf.testPickle) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testMemory (test_win.TestWinCreateSelf.testMemory) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testPyProps (test_win.TestWinCreateSelf.testPyProps) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testMemoryModel (test_win.TestWinCreateSelf.testMemoryModel) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testSharedQuery (test_win.TestWinCreateSelf.testSharedQuery) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testAttributes (test_win.TestWinCreateWorld.testAttributes) ... ok
testPickle (test_win.TestWinCreateSelf.testPickle) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testPyProps (test_win.TestWinCreateSelf.testPyProps) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testSharedQuery (test_win.TestWinCreateSelf.testSharedQuery) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testAttributes (test_win.TestWinCreateWorld.testAttributes) ... [sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
ok
testCreateFlavor (test_win.TestWinCreateWorld.testCreateFlavor) ... testCreateFlavor (test_win.TestWinCreateWorld.testCreateFlavor) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetAttr (test_win.TestWinCreateWorld.testGetAttr) ... ok
testGetAttr (test_win.TestWinCreateWorld.testGetAttr) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetGroup (test_win.TestWinCreateWorld.testGetGroup) ... ok
testGetGroup (test_win.TestWinCreateWorld.testGetGroup) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetErrhandler (test_win.TestWinCreateWorld.testGetSetErrhandler) ... ok
testGetSetErrhandler (test_win.TestWinCreateWorld.testGetSetErrhandler) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetInfo (test_win.TestWinCreateWorld.testGetSetInfo) ... ok
testGetSetInfo (test_win.TestWinCreateWorld.testGetSetInfo) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testGetSetName (test_win.TestWinCreateWorld.testGetSetName) ... ok
testGetSetName (test_win.TestWinCreateWorld.testGetSetName) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testMemory (test_win.TestWinCreateWorld.testMemory) ... ok
testMemory (test_win.TestWinCreateWorld.testMemory) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testMemoryModel (test_win.TestWinCreateWorld.testMemoryModel) ... ok
testMemoryModel (test_win.TestWinCreateWorld.testMemoryModel) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
ok
testPickle (test_win.TestWinCreateWorld.testPickle) ... testPickle (test_win.TestWinCreateWorld.testPickle) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testPyProps (test_win.TestWinCreateWorld.testPyProps) ... ok
testPyProps (test_win.TestWinCreateWorld.testPyProps) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testSharedQuery (test_win.TestWinCreateWorld.testSharedQuery) ... ok
testSharedQuery (test_win.TestWinCreateWorld.testSharedQuery) ... [sbuild:01859] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
[sbuild:01860] ../../../../../../ompi/mca/osc/ucx/osc_ucx_component.c:375  Error: OSC UCX component priority set inside component query failed 
 
ok
testConstructor (test_win.TestWinNull.testConstructor) ... ok
testGetName (test_win.TestWinNull.testGetName) ... ok
testConstructor (test_win.TestWinNull.testConstructor) ... ok
testGetName (test_win.TestWinNull.testGetName) ... ok

----------------------------------------------------------------------
Ran 2083 tests in 41.974s

OK (skipped=90)
ok

----------------------------------------------------------------------
Ran 2083 tests in 41.978s

OK (skipped=90)
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
   create-stamp debian/debhelper-build-stamp
   dh_testroot -O--buildsystem=pybuild
   dh_prep -O--buildsystem=pybuild
   debian/rules execute_before_dh_auto_install-indep
make[1]: Entering directory '/<<PKGBUILDDIR>>'
PYTHONPATH=`pybuild -p 3.13 --print "{build_dir}"` \
  make -C docs/source/ html man info latexpdf SPHINXOPTS="-D today=\"April 06, 2026\""
make[2]: Entering directory '/<<PKGBUILDDIR>>/docs/source'
Running Sphinx v9.1.0
loading translations [en]... done
making output directory... done
WARNING: directive 'autoclass' is already registered and will not be overridden [app.add_directive]
WARNING: directive 'autoexception' is already registered and will not be overridden [app.add_directive]
WARNING: directive 'autotype' is already registered and will not be overridden [app.add_directive]
[autosummary] generating autosummary for: changes.rst, citation.rst, develop.rst, guidelines.rst, index.rst, install.rst, intro.rst, license.rst, mpi4py.MPI.rst, mpi4py.bench.rst, ..., mpi4py.run.rst, mpi4py.typing.rst, mpi4py.util.dtlib.rst, mpi4py.util.pkl5.rst, mpi4py.util.pool.rst, mpi4py.util.rst, mpi4py.util.sync.rst, overview.rst, reference.rst, tutorial.rst
[autosummary] generating autosummary for: /<<PKGBUILDDIR>>/docs/source/reference/mpi4py.MPI.rst

Extension error (sphinx.ext.autosummary)!

Versions
========

* Platform:         linux; (Linux-6.12.85+deb13-cloud-amd64-x86_64-with-glibc2.42)
* Python version:   3.13.12 (CPython)
* Sphinx version:   9.1.0
* Docutils version: 0.22.4
* Jinja2 version:   3.1.6
* Pygments version: 2.19.2

Last Messages
=============

None.

Loaded Extensions
=================

None.

Traceback
=========

      File "/usr/lib/python3/dist-packages/sphinx/events.py", line 452, in emit
        raise ExtensionError(
        ...<3 lines>...
        ) from exc
    sphinx.errors.ExtensionError: Handler <function process_generate_options at 0x7f8ddc875620> for event 'builder-inited' threw an exception (exception: type object 'ExceptionDocumenterCustom' has no attribute 'startswith')


The full traceback has been saved in:
/tmp/sphinx-err-gab5q2bv.log

To report this error to the developers, please open an issue at <https://github.com/sphinx-doc/sphinx/issues/>. Thanks!
Please also report this if it was a user error, so that a better error message can be provided next time.
make[2]: *** [Makefile:20: html] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>/docs/source'
make[1]: *** [debian/rules:114: execute_before_dh_auto_install-indep] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:103: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2
--------------------------------------------------------------------------------



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