var testing.failFast

3 uses

	testing (current package)
		testing.go#L452: 	failFast = flag.Bool("test.failfast", false, "do not start new tests after the first test failure")
		testing.go#L490: 	failFast             *bool
		testing.go#L2724: 	return *failFast && numFailed.Load() > 0