MERCURY_OPTIONS= --deep-random-write=25 --mdb-disable-progress
make[3]: Entering directory '/mnt/testing/run/build/mercury-srcdist-rotd-2024-05-07/tests/valid'
/mnt/testing/run/build/mercury-srcdist-rotd-2024-05-07/stage2/scripts/mmc --generate-dependencies --grade hlc.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS     preferred_switch_var > preferred_switch_var.dep_err 2>&1
make[3]: Leaving directory '/mnt/testing/run/build/mercury-srcdist-rotd-2024-05-07/tests/valid'
make[3]: Entering directory '/mnt/testing/run/build/mercury-srcdist-rotd-2024-05-07/tests/valid'
/mnt/testing/run/build/mercury-srcdist-rotd-2024-05-07/stage2/scripts/mmc --make-interface --grade hlc.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS     preferred_switch_var
make[3]: *** [/tmp/mmake.Z8i6uj:3471: preferred_switch_var.date] Segmentation fault (core dumped)
make[3]: Target 'preferred_switch_var.runtest' not remade because of errors.
make[3]: Leaving directory '/mnt/testing/run/build/mercury-srcdist-rotd-2024-05-07/tests/valid'