122 |     if (!Trait::Evaluate(condition)) {                                       \
      |                          ^~~~~~~~~
./solvers/c3_options.h:218:34: warning: comparison of integer expressions of different signedness: 'std::vector<double>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  218 |     DRAKE_DEMAND(u_lambda.size() == num_contacts * num_friction_directions * 2);
      |                  ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bazel-out/k8-opt/bin/external/drake+/tools/install/libdrake/_virtual_includes/drake_shared_library/drake/common/drake_assert.h:122:26: note: in definition of macro 'DRAKE_DEMAND'
  122 |     if (!Trait::Evaluate(condition)) {                                       \
      |                          ^~~~~~~~~
./solvers/c3_options.h:219:28: warning: comparison of integer expressions of different signedness: 'std::vector<double>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  219 |     DRAKE_DEMAND(mu.size() == num_contacts);
      |                  ~~~~~~~~~~^~~~~~~~~~~~~~~
bazel-out/k8-opt/bin/external/drake+/tools/install/libdrake/_virtual_includes/drake_shared_library/drake/common/drake_assert.h:122:26: note: in definition of macro 'DRAKE_DEMAND'
  122 |     if (!Trait::Evaluate(condition)) {                                       \
      |                          ^~~~~~~~~
[10,926 / 11,750] Compiling Common/DataModel/vtkReebGraph.cxx; 0s remote-cache ... (7 actions, 0 running)
[10,960 / 11,750] Linking systems/controllers/libaffine_controller.so; Downloading systems/controllers/libaffine_controller.so; 0s remote-cache ... (8 actions, 0 running)
[10,996 / 11,750] Executing genrule @@drake++internal_repositories+lapack_internal//:SRC/dpocon.f.pic.o_genrule; 0s remote-cache ... (8 actions, 0 running)
[11,026 / 11,750] Compiling Common/DataModel/vtkPerlinNoise.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,059 / 11,750] Compiling Common/DataModel/vtkPolyData.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,088 / 11,750] Compiling Common/DataModel/vtkPointData.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,124 / 11,750] Executing genrule @@drake++internal_repositories+lapack_internal//:SRC/dspgv.f.pic.o_genrule; 0s remote-cache ... (7 actions, 0 running)
[11,157 / 11,750] Compiling Imaging/Core/vtkAbstractImageInterpolator.cxx; 0s remote-cache ... (8 actions, 0 running)
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[11,225 / 11,750] Compiling Imaging/Core/vtkImageClip.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,246 / 11,750] Compiling Common/ExecutionModel/vtkUnstructuredGridBaseAlgorithm.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,266 / 11,750] Compiling IO/Core/vtkZLibDataCompressor.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,282 / 11,750] Compiling IO/Core/vtkBase64InputStream.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,292 / 11,750] Compiling Rendering/Core/vtkAbstractMapper.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,302 / 11,750] Compiling Filters/General/vtkImageDataToPointSet.cxx; 1s remote-cache ... (8 actions, 0 running)
[11,324 / 11,750] Compiling Filters/Sources/vtkSuperquadricSource.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,346 / 11,750] Compiling Rendering/Core/vtkWindowToImageFilter.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,370 / 11,750] Compiling Rendering/Core/vtkVolumeCollection.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,391 / 11,750] Compiling Rendering/OpenGL2/vtkClearRGBPass.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,412 / 11,750] Compiling Rendering/Core/vtkAssemblyPaths.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,434 / 11,750] Compiling Rendering/OpenGL2/vtkDepthOfFieldPass.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,457 / 11,750] Compiling Rendering/Core/vtkRenderWindowInteractor.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,476 / 11,750] Compiling Rendering/Core/vtkCellCenterDepthSort.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,499 / 11,750] Compiling Rendering/OpenGL2/vtkShaderProgram.cxx; 0s remote-cache ... (7 actions, 0 running)
[11,516 / 11,750] Compiling Rendering/OpenGL2/vtkSSAAPass.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,539 / 11,750] Compiling Rendering/Core/vtkImageProperty.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,561 / 11,750] Compiling Rendering/Core/vtkGlyph3DMapper.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,580 / 11,750] Compiling Rendering/Core/vtkFXAAOptions.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,606 / 11,750] Compiling Rendering/OpenGL2/vtkOpenGLProperty.cxx; 0s remote-cache ... (7 actions, 0 running)
[11,625 / 11,750] Compiling Rendering/OpenGL2/vtkOpenGLImageAlgorithmHelper.cxx; 0s remote-cache ... (8 actions, 0 running)
[11,642 / 11,750] [Prepa] action 'SolibSymlink _solib_k8/_U_A_Adrake+_S_Stools_Sinstall_Slibdrake_Cdrake_Ushared_Ulibrary___Uexternal_Sdrake+_Stools_Sinstall_Slibdrake/libdrake.so'
[11,649 / 11,750] [Sched] Linking examples/sampling_c3/franka_sampling_c3_controller; Downloading systems/_objs/robot_lcm_systems/robot_lcm_systems.o ... (8 actions, 1 running)
ERROR: /tmp/cirrus-ci-build/examples/sampling_c3/BUILD.bazel:202:10: Linking examples/sampling_c3/franka_sampling_c3_controller failed: (Exit 1): gcc failed: error executing CppLink command (from target //examples/sampling_c3:franka_sampling_c3_controller) /usr/bin/gcc @bazel-out/k8-opt/bin/examples/sampling_c3/franka_sampling_c3_controller-0.params

Use --sandbox_debug to see verbose messages from the sandbox and retain the sandbox build root for debugging
/usr/bin/ld.gold: error: cannot find -lopenblas
collect2: error: ld returned 1 exit status
INFO: Elapsed time: 260.204s, Critical Path: 25.24s
INFO: 11662 processes: 6003 remote cache hit, 5657 internal, 2 processwrapper-sandbox.
ERROR: Build did NOT complete successfully
FAILED: