```
[ 50%] Building CXX object CMakeFiles/generic_random_test.dir/generic_random_test.cpp.o
/usr/local/bin/c++   -DCGAL_TEST_SUITE=1 -DCGAL_USE_GMP -DCGAL_USE_MPFR -I/home/cgal_tester/build/src/cmake/platforms/Ubuntu-latest-GCC6-CXX1z/test/Generator/../../include -isystem /usr/include/x86_64-linux-gnu -I/home/cgal_tester/build/src/cmake/platforms/Ubuntu-latest-GCC6-CXX1z/test/Generator -I/home/cgal_tester/build/src/cmake/platforms/Ubuntu-latest-GCC6-CXX1z/include -I/mnt/testsuite/include  -DDONT_USE_BOOST_PROGRAM_OPTIONS -Wall -Wextra -std=c++1z -frounding-math   -Wall -frounding-math -o CMakeFiles/generic_random_test.dir/generic_random_test.cpp.o -c /home/cgal_tester/build/src/cmake/platforms/Ubuntu-latest-GCC6-CXX1z/test/Generator/generic_random_test.cpp
In file included from /mnt/testsuite/include/CGAL/Mesh_3/vertex_perturbation.h:35,
                 from /mnt/testsuite/include/CGAL/Mesh_3/Sliver_perturber.h:48,
                 from /mnt/testsuite/include/CGAL/perturb_mesh_3.h:35,
                 from /mnt/testsuite/include/CGAL/optimize_mesh_3.h:32,
                 from /mnt/testsuite/include/CGAL/refine_mesh_3.h:39,
                 from /mnt/testsuite/include/CGAL/make_mesh_3.h:35,
                 from /home/cgal_tester/build/src/cmake/platforms/Ubuntu-latest-GCC6-CXX1z/test/Generator/generic_random_test.cpp:9:
/mnt/testsuite/include/CGAL/Mesh_3/C3T3_helpers.h: In member function 'void CGAL::Mesh_3::C3T3_helpers<C3T3, MeshDomain>::Cell_data_backup::backup_finite_cell(const Cell_handle&)':
/mnt/testsuite/include/CGAL/Mesh_3/C3T3_helpers.h:1431:48: warning: type qualifiers ignored on cast result type [-Wignored-qualifiers]
         const int ii = static_cast<const int>(i);//avoid warnings
                                                ^
```
https://cgal.geometryfactory.com/CGAL/testsuite/CGAL-4.12-Ic-186/Generator/TestReport_lrineau_Ubuntu-latest-GCC6-CXX1z.gz