MERCURY_OPTIONS= --deep-random-write=25 --mdb-disable-progress
make[3]: Entering directory '/mnt/testing/run/build/mercury-srcdist-rotd-2022-04-13/tests/hard_coded'
/mnt/testing/run/build/mercury-srcdist-rotd-2022-04-13/stage2/scripts/mmc --generate-dependencies --grade hlc.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS -O5 --intermod-opt    thread_barrier_test > thread_barrier_test.dep_err 2>&1
make[3]: Leaving directory '/mnt/testing/run/build/mercury-srcdist-rotd-2022-04-13/tests/hard_coded'
make[3]: Entering directory '/mnt/testing/run/build/mercury-srcdist-rotd-2022-04-13/tests/hard_coded'
/mnt/testing/run/build/mercury-srcdist-rotd-2022-04-13/stage2/scripts/mmc --make-interface --grade hlc.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS -O5 --intermod-opt    thread_test_utils
/mnt/testing/run/build/mercury-srcdist-rotd-2022-04-13/stage2/scripts/mmc --make-short-interface --grade hlc.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS -O5 --intermod-opt    thread_test_utils
/mnt/testing/run/build/mercury-srcdist-rotd-2022-04-13/stage2/scripts/mmc --make-interface --grade hlc.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS -O5 --intermod-opt    thread_barrier_test
/mnt/testing/run/build/mercury-srcdist-rotd-2022-04-13/stage2/scripts/mmc --make-optimization-interface --grade hlc.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS -O5 --intermod-opt    thread_barrier_test
/mnt/testing/run/build/mercury-srcdist-rotd-2022-04-13/stage2/scripts/mmc --make-optimization-interface --grade hlc.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS -O5 --intermod-opt    thread_test_utils
thread_test_utils.m:129: In clause for predicate `get_all_messages'/6:
thread_test_utils.m:129:   error: undefined predicate `empty'/1.
make[3]: *** [/tmp/mmake.iFstHO:4019: thread_test_utils.optdate] Error 1
make[3]: Target 'thread_barrier_test.runtest' not remade because of errors.
make[3]: Leaving directory '/mnt/testing/run/build/mercury-srcdist-rotd-2022-04-13/tests/hard_coded'