Bug#1121957: dolfin: autopkgtest regression on ppc64el: Unable to extract eigenvalue from SLEPc eigenvalue

[Paul Gevers]

Source: dolfin
Version: 2019.2.0~legacy20240219.1c52e83-21
Severity: serious
User: debian-ci at lists.debian.org
Usertags: regression
X-Debbugs-CC: debian-powerpc at lists.debian.org
User: debian-powerpc at lists.debian.org
Usertags: ppc64el

Dear maintainer(s),

Your package has an autopkgtest, great. However, it started failing on 
ppc64el in September 2025. Can you please investigate the situation and 
fix it? I copied some of the output at the bottom of this report.

The release team considers [1] regressed autopkgtests RC in testing on 
all release architectures.

More information about this bug and the reason for filing it can be 
found on 
https://wiki.debian.org/ContinuousIntegration/RegressionEmailInformation

Paul

[1] https://release.debian.org/testing/rc_policy.txt paragraph 6(a)

https://ci.debian.net/packages/d/dolfin/unstable/ppc64el/66625221/

793s  3/49 Test  #1: demo_waveguide_mpi .....................***Failed 
  5.43 sec
793s 
[ci-334-30bd65f3][[22432,1],0][../../../../../../opal/mca/btl/tcp/btl_tcp_proc.c:266:mca_btl_tcp_proc_create_interface_graph] 
Unable to find reachable pairing between local and remote interfaces
793s 
[ci-334-30bd65f3][[22432,1],0][../../../../../../opal/mca/btl/tcp/btl_tcp_proc.c:266:mca_btl_tcp_proc_create_interface_graph] 
Unable to find reachable pairing between local and remote interfaces
793s 
[ci-334-30bd65f3][[22432,1],1][../../../../../../opal/mca/btl/tcp/btl_tcp_proc.c:266:mca_btl_tcp_proc_create_interface_graph] 
Unable to find reachable pairing between local and remote interfaces
793s 
[ci-334-30bd65f3][[22432,1],1][../../../../../../opal/mca/btl/tcp/btl_tcp_proc.c:266:mca_btl_tcp_proc_create_interface_graph] 
Unable to find reachable pairing between local and remote interfaces
793s 
[ci-334-30bd65f3][[22432,1],2][../../../../../../opal/mca/btl/tcp/btl_tcp_proc.c:266:mca_btl_tcp_proc_create_interface_graph] 
Unable to find reachable pairing between local and remote interfaces
793s 
[ci-334-30bd65f3][[22432,1],2][../../../../../../opal/mca/btl/tcp/btl_tcp_proc.c:266:mca_btl_tcp_proc_create_interface_graph] 
Unable to find reachable pairing between local and remote interfaces
793s terminate called after throwing an instance of 'std::runtime_error'
793s   what():
793s
793s *** 
-------------------------------------------------------------------------
793s *** DOLFIN encountered an error. If you are not able to resolve 
this issue
793s *** using the information listed below, you can ask for help at
793s ***
793s ***     https://fenicsproject.discourse.group/
793s ***
793s *** Remember to include the error message listed below and, if 
possible,
793s *** include a *minimal* running example to reproduce the error.
793s ***
793s *** 
-------------------------------------------------------------------------
793s *** Error:   Unable to extract eigenvalue from SLEPc eigenvalue solver.
793s *** Reason:  Requested eigenvalue (0) has not been computed.
793s *** Where:   This error was encountered inside SLEPcEigenSolver.cpp.
793s *** Process: 2
793s ***
793s *** DOLFIN version: 2019.2.0.64.dev0
793s *** Git changeset:  debian_2019.2.0~legacy20240219.1c52e83-25
793s *** 
-------------------------------------------------------------------------
793s
793s [ci-334-30bd65f3:14759] *** Process received signal ***
793s [ci-334-30bd65f3:14759] Signal: Aborted (6)
793s [ci-334-30bd65f3:14759] Signal code:  (-6)

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