make: Unknown modifier ":Z"
	while evaluating "${:Z}" with value ""
	in command "@echo ${:Z}"
	in target "provoke-error" from varname-make_stack_trace.mk:42
	in make[2] in directory "<curdir>"
*** Error code 2 (continuing)

Stop.
make: stopped making "disabled-compat" in unit-tests
make: Unknown modifier ":Z"
	while evaluating "${:Z}" with value ""
	in command "@echo ${:Z}"
	in target "provoke-error" from varname-make_stack_trace.mk:42
	in make[2] in directory "<curdir>"
*** [disabled-parallel] Error code 2

make: stopped making "disabled-parallel" in unit-tests
make: Unknown modifier ":Z"
	while evaluating "${:Z}" with value ""
	in command "@echo ${:Z}"
	in target "provoke-error" from varname-make_stack_trace.mk:42
	in make[2] in directory "<curdir>"
	in command "make -f varname-make_stack_trace.mk provoke-error"
	in target "enabled-compat" from varname-make_stack_trace.mk:35
	in make[1] in directory "<curdir>"
*** Error code 2 (continuing)

Stop.
make: stopped making "enabled-compat" in unit-tests
make: Unknown modifier ":Z"
	while evaluating "${:Z}" with value ""
	in command "@echo ${:Z}"
	in target "provoke-error" from varname-make_stack_trace.mk:42
	in make[2] in directory "<curdir>"
	in target "enabled-parallel" from varname-make_stack_trace.mk:39
	in make[1] in directory "<curdir>"
*** [enabled-parallel] Error code 2

make: stopped making "enabled-parallel" in unit-tests
.make[5]: warning: Invalid internal option "-J" in "<curdir>"; see the manual page
	in .make[5] in directory "<curdir>"
	in target "multi-stage-4" from varname-make_stack_trace.mk:56
	in make[4] in directory "<curdir>"
	in target "multi-stage-3" from varname-make_stack_trace.mk:54
	in make[3] in directory "<curdir>"
	in target "multi-stage-2" from varname-make_stack_trace.mk:52
	in make[2] in directory "<curdir>"
	in target "multi-stage-1" from varname-make_stack_trace.mk:50
	in make[1] in directory "<curdir>"
exit status 0