}
		ift2, err := Interfaces()
		if err != nil {
			ti.teardown()
			t.Fatal(err)
		}
		if len(ift2) <= len(ift1) {
			for _, ifi := range ift1 {
				t.Logf("before: %v", ifi)
			}
			for _, ifi := range ift2 {
				t.Logf("after: %v", ifi)
			}
			ti.teardown()
			t.Fatalf("got %v; want gt %v", len(ift2), len(ift1))
		}
		for _, ifi := range ift2 {
			if ti.name != ifi.Name {
				continue

	}
	rt.reqBody.Close()
	io.ReadAll(rt.res.Body)
	rt.res.Body.Close()
	rt.t.Logf("RoundTrip %v: closed request body", rt.roundTripID)
}

// wantDial waits for the Transport to start a Dial.
func (dt *transportDialTester) wantDial() *transportDialTesterConn {
	c := <-dt.dials
	c.connID = dt.dialCount
	dt.dialCount++
	dt.t.Logf("Dial %v: started", c.connID)
	return c
}

// finish completes a Dial.

		mls, err := liveness.MakeMergeLocalsState(testcase.partition, testcase.vars)
		t.Logf("tc %d err is %v\n", k, err)
		if testcase.experr && err == nil {
			t.Fatalf("tc:%d missing error mls %v", k, mls)
		} else if !testcase.experr && err != nil {
			t.Fatalf("tc:%d unexpected error mls %v", k, err)
		}
		if mls != nil {
			t.Logf("tc %d: mls: %v\n", k, mls.String())
		}
	}
}

			}
			return nonStmtLines[i].Line < nonStmtLines[j].Line
		})
		for _, l := range nonStmtLines {
			t.Logf("%s:%d has no DWARF is_stmt mark\n", l.File, l.Line)
		}
	}
	t.Logf("total=%d, nostmt=%d\n", len(lines), len(nonStmtLines))

	// 	_testmain.go:71 +0x170
	data, err := os.ReadFile(crashOutput)
	if err != nil {
		t.Fatalf("child process failed to write crash report: %v", err)
	}
	crash := string(data)
	t.Logf("crash = <<%s>>", crash)
	t.Logf("stderr = <<%s>>", stderr)

	// Check that the crash file and the stderr both contain the panic and stack trace.
	for _, want := range []string{
		"panic: oops",
		"goroutine 1",

		t.Logf("got span %+v, want span %+v", got, want)
		return false
	}
	if len(got.ChildSpans) < len(want.ChildSpans) {
		t.Logf("got %d child spans from, want %d child spans, maybe trace has not be fully reported",
			len(got.ChildSpans), len(want.ChildSpans))
		return false
	} else if len(got.ChildSpans) > len(want.ChildSpans) {

				cagain++
				if cagain > 20 {
					t.Error("looping on EAGAIN")
					return nil
				}
				if err = ss.conn.fd.pfd.WaitWrite(); err != nil {
					t.Logf("client WaitWrite: %v", err)
					return nil
				}
			default:
				// We expect to eventually get an error.
				t.Logf("client WriteOnce: %v", err)
				return nil
			}
		}
	}
	withTCPConnPair(t, client, server)

	close(afterSubTest)
	<-afterSecondLog // Delay the "PASS: TestInterruptor" line until after "CONT  TestLog".
}

func TestLog(t *testing.T) {
	t.Parallel()

	t.Logf("this is the first TestLog log")
	close(afterFirstLog)
	<-afterSubTest
	t.Logf("this is the second TestLog log")
	close(afterSecondLog)

func (c *kubeComponent) InvokeOrFail(t test.Failer, args []string) (string, string) {
	output, stderr, err := c.Invoke(args)
	if err != nil {
		t.Logf("Unwanted exception for 'istioctl %s': %v", strings.Join(args, " "), err)
		t.Logf("Output:\n%v", output)
		t.Logf("Error:\n%v", stderr)
		t.FailNow()
	}
	return output, stderr

}

func (d TestFrontend) Logf(msg string, args ...interface{}) { d.t.Logf(msg, args...) }
func (d TestFrontend) Log() bool                            { return true }

func (d TestFrontend) Fatalf(_ src.XPos, msg string, args ...interface{}) { d.t.Fatalf(msg, args...) }
func (d TestFrontend) Warnl(_ src.XPos, msg string, args ...interface{})  { d.t.Logf(msg, args...) }