var testing.numFailed

3 uses

	testing (current package)
		testing.go#L335: 	numFailed uint32 // number of test failures
		testing.go#L1088: 			atomic.AddUint32(&numFailed, 1)
		testing.go#L1731: 	return *failFast && atomic.LoadUint32(&numFailed) > 0

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