// "goroutine running on other thread; stack unavailable".
	out := outbuf.Bytes()
	n := bytes.Count(out, []byte("main.crashDumpsAllThreadsLoop("))
	if n != 4 {
		t.Errorf("found %d instances of main.crashDumpsAllThreadsLoop; expected 4", n)
		t.Logf("%s", out)
	}
}

func TestPanicSystemstack(t *testing.T) {
	// Test that GOTRACEBACK=crash prints both the system and user