./startcts
Android CTS version 2.3_r4
Device(emulator-5554) connected
cts_host > start --plan CTS -t android.example.cts.ExampleSecondaryTest#testZorch
	(repeat this about an hour)

..and this happens:

01:36:50 E/ddms: ADB rejected shell command (am instrument -w -e bundle true android.tests.devicesetup/android.tests.getinfo.DeviceInfoInstrument): closed CTS_ERROR >>> Failed to execute shell command am instrument -w -e bundle true
android.tests.devicesetup/android.tests.getinfo.DeviceInfoInstrument on device emulator-5554 com.android.ddmlib.AdbCommandRejectedException: closed CTS_ERROR >>> Timeout: getDeviceInfo start test android.example.cts.ExampleSecondaryTest#testZorch
============================================================== Test package: android.example
01:38:50 E/ddms: ADB rejected shell command (am broadcast -a android.tests.util.disablekeyguard): closed CTS_ERROR >>> Failed to execute shell command am broadcast -a android.tests.util.disablekeyguard on device emulator-5554 com.android.ddmlib.AdbCommandRejectedException: closed CTS_ERROR >>> Installing met timeout due to Unknown reason. Time: 130.9s

Can be any test case for example same loop for android.sax.cts.ElementTest#testAndroidTestCaseSetupProperly results same error:

11:56:46 E/ddms: ADB rejected shell command (am instrument -w -e bundle true android.tests.devicesetup/android.tests.getinfo.DeviceInfoInstrument): closed CTS_ERROR >>> Failed to execute shell command am instrument -w -e bundle true android.tests.devicesetup/android.tests.getinfo.DeviceInfoInstrument on device emulator-5554 com.android.ddmlib.AdbCommandRejectedException: closed CTS_ERROR >>> Timeout: getDeviceInfo
11:58:46 E/ddms: ADB rejected shell command (am broadcast -a android.tests.util.disablekeyguard): closed CTS_ERROR >>> Failed to execute shell command am broadcast -a android.tests.util.disablekeyguard on device emulator-5554 com.android.ddmlib.AdbCommandRejectedException: closed start test android.sax.cts.ElementTest#testAndroidTestCaseSetupProperly
============================================================== Test package: android.sax CTS_ERROR >>> Installing met timeout due to Unknown reason. Time: 130.3s

#!/bin/bash
while [ true ]; do
        ./startcts start --plan CTS -t android.example.cts.ExampleSecondaryTest#testZorch
done;

CTS_DEBUG >>> 1309508649902 searchTest(): testName=android.sax.cts.ElementTest#testAndroidTestCaseSetupProperly,caseFullName=android.provider.cts.Contacts_OrganizationsTest

CTS_DEBUG >>> 1309508649902 searchTest(): testName=android.sax.cts.ElementTest#testAndroidTestCaseSetupProperly,caseFullName=android.provider.cts.MediaStore_Audio_MediaTest

CTS_DEBUG >>> 1309508649902 searchTest(): testName=android.sax.cts.ElementTest#testAndroidTestCaseSetupProperly,caseFullName=android.provider.cts.BrowserTest

CTS_DEBUG >>> 1309508649902 searchTest(): testName=android.sax.cts.ElementTest#testAndroidTestCaseSetupProperly,caseFullName=android.provider.cts.ContactsContract_DataTest

CTS_DEBUG >>> 1309508649902 searchTest(): testName=android.sax.cts.ElementTest#testAndroidTestCaseSetupProperly,caseFullName=android.provider.cts.UserDictionary_WordsTest

CTS_DEBUG >>> 1309508649902 searchTest(): testName=android.sax.cts.ElementTest#testAndroidTestCaseSetupProperly,caseFullName=android.sax.cts.ElementTest
start test android.sax.cts.ElementTest#testAndroidTestCaseSetupProperly

CTS_DEBUG >>> 1309508649911 Start a test session.
==============================================================
Test package: android.sax

CTS_DEBUG >>> 1309508649911 installAPK /home/digia/android-cts//tools/../repository/testcases/CtsSaxTestCases.apk ...

CTS_DEBUG >>> 1309508649911 adb -s emulator-5554 install -r /home/digia/android-cts//tools/../repository/testcases/CtsSaxTestCases.apk

CTS_DEBUG >>> 1309508649911 start(), action=install,mTimer=java.util.Timer@19106c7,timeout=120000

CTS_DEBUG >>> 1309508649931 Enter waitPackageActionComplete()

CTS_ERROR >>> Failed to execute shell command am broadcast -a android.tests.util.disablekeyguard on device emulator-5554

CTS_ERROR >>> Failed to execute shell command am broadcast -a android.tests.util.disablekeyguard on device emulator-5554
com.android.ddmlib.AdbCommandRejectedException: closed

CTS_DEBUG >>> 1309508649938 device emulator-5554 changed with changeMask=2

CTS_DEBUG >>> 1309508649938 Device state:ONLINE

CTS_DEBUG >>> 1309508650097 device emulator-5554 changed with changeMask=2

CTS_DEBUG >>> 1309508650097 Device state:ONLINE

CTS_DEBUG >>> 1309508650242 device emulator-5554 changed with changeMask=2

CTS_DEBUG >>> 1309508650242 Device state:ONLINE

CTS_DEBUG >>> 1309508769918 PackageActionTimeoutTask.run(): mAction=install

CTS_DEBUG >>> 1309508769918 ObjectSync.sendNotify() is called, mNotifySent=false

CTS_DEBUG >>> 1309508769918 TestPackage.notifyInstallingTimeout() is called

CTS_ERROR >>> Installing met timeout due to Unknown reason.

CTS_ERROR >>> Installing met timeout due to Unknown reason.

CTS_DEBUG >>> 1309508779918 Leave waitPackageActionComplete()

CTS_DEBUG >>> 1309508779918 installAPK /home/digia/android-cts//tools/../repository/testcases/CtsSaxTestCases.apk finish
Time: 130.12s