There might be false positives if a port has a GO option and also
USES=go after the introduction of GO_TEST_TARGET in rP517831.
/!\ knot-resolver-4.1.0_2: Makefile errors /!\ The following options helpers are incorrectly set after bsd.port.options.mk and are ineffective: GO_TEST_TARGET *** Error code 1
Alternatively, we could rename GO_TEST_TARGET to something else
that does not overlap with an options helper since it is still new.