var testing.numFailed

4 uses

	testing (current package)
		fuzz.go#L652: 			numFailed.Add(1)
		testing.go#L514: 	numFailed atomic.Uint32 // number of test failures
		testing.go#L1654: 			numFailed.Add(1)
		testing.go#L2526: 	return *failFast && numFailed.Load() > 0