MERCURY_OPTIONS= --deep-random-write=25 --mdb-disable-progress
make[3]: Entering directory '/mnt/testing/run/build/mercury-srcdist-rotd-2023-12-01/tests/invalid_nodepend'
if /mnt/testing/run/build/mercury-srcdist-rotd-2023-12-01/stage2/scripts/mmc --errorcheck-only --grade hlc.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS     bad_mutable \
	> bad_mutable.err 2>&1; \
then false; \
else true; \
fi
Comparing bad_mutable.err with bad_mutable.err_exp*,
	results in bad_mutable.err_res
** bad_mutable.err did not match the expected error output
** (closest match was bad_mutable.err_res1)
--- bad_mutable.err_exp	2023-10-28 21:23:30.000000000 +1100
+++ bad_mutable.err	2023-12-02 12:30:24.378086482 +1100
@@ -1,8 +1 @@
-bad_mutable.m:012: In declaration for mutable `not_a_type':
-bad_mutable.m:012:   error: undefined type `no_type'/0.
-bad_mutable.m:014: In declaration for mutable `not_an_inst':
-bad_mutable.m:014:   error: undefined inst `special_ground'/0.
-bad_mutable.m:021: Error: in the expansion of the named inst
-bad_mutable.m:021:   `bad_mutable.t1'/0:
-bad_mutable.m:021:   the inst `unique' may not appear in `:- mutable'
-bad_mutable.m:021:   declarations.
+Segmentation fault
make[3]: *** [../Mmake.common:172: bad_mutable.err_res] Error 1
make[3]: Target 'bad_mutable.runtest' not remade because of errors.
make[3]: Leaving directory '/mnt/testing/run/build/mercury-srcdist-rotd-2023-12-01/tests/invalid_nodepend'