MERCURY_OPTIONS= --deep-random-write=25 --deep-std-name --mdb-disable-progress
gmake[3]: Entering directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/tests/valid'
{ echo MCFLAGS += '--grade csharp    --options-file /home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/stage2/Mercury.options --mercury-linkage static -j2 --flags ../TESTS_FLAGS --flags ../WS_FLAGS --use-subdirs    '; echo MCFLAGS += ' '; echo CFLAGS += '    '; echo JAVACFLAGS += '-J"-Xmx1024m"   '; echo CSCFLAGS += '   '; echo C2INITARGS += '/home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/stage2/library/mer_std.init /home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/stage2/runtime/mer_rt.init    '; echo MLLIBS += '   '; echo MLOBJS += '  '; echo LDFLAGS += '  '; echo LD_LIBFLAGS += '  '; echo EXTRA_LIBRARIES += ''; echo EXTRA_LIB_DIRS += ''; echo LIBGRADES = 'hlc.gc  '; echo INSTALL_PREFIX = '/home/mercury/testing/run/install'; echo LINKAGE = 'shared'; echo MERCURY_LINKAGE = 'shared'; } | /home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/stage2/scripts/mmc --make --options-file - gh137.depend
gmake[3]: Leaving directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/tests/valid'
gmake[3]: Entering directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/tests/valid'
{ echo MCFLAGS += '--grade csharp    --options-file /home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/stage2/Mercury.options --mercury-linkage static -j2 --flags ../TESTS_FLAGS --flags ../WS_FLAGS --use-subdirs    '; echo MCFLAGS += ' '; echo CFLAGS += '    '; echo JAVACFLAGS += '-J"-Xmx1024m"   '; echo CSCFLAGS += '   '; echo C2INITARGS += '/home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/stage2/library/mer_std.init /home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/stage2/runtime/mer_rt.init    '; echo MLLIBS += '   '; echo MLOBJS += '  '; echo LDFLAGS += '  '; echo LD_LIBFLAGS += '  '; echo EXTRA_LIBRARIES += ''; echo EXTRA_LIB_DIRS += ''; echo LIBGRADES = 'hlc.gc  '; echo INSTALL_PREFIX = '/home/mercury/testing/run/install'; echo LINKAGE = 'shared'; echo MERCURY_LINKAGE = 'shared'; } | /home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/stage2/scripts/mmc --make --options-file - gh137.cs
Making Mercury/int3s/gh137.int3
Making Mercury/int3s/gh137_helper_1.int3
Making Mercury/ints/gh137.int
Making Mercury/ints/gh137_helper_1.int
Making Mercury/css/gh137.cs
Uncaught Mercury exception:
Software Error: predicate `check_hlds.typecheck_coerce.build_type_param_variance_restrictions_in_ctor_arg_type'/6: Unexpected: hlds_eqv_type
** Error making `Mercury/css/gh137.cs'.
gmake[3]: *** [/tmp/mmake.JpeQc2:1502: gh137.cs] Error 1
gmake[3]: Target 'gh137.runtest' not remade because of errors.
gmake[3]: Leaving directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2025-06-27/tests/valid'