tst_QTcpSocket::suddenRemoteDisconnect() is flaky

QT_PLUGIN_PATH=/Users/liangqi/qt/qt5-build/qtbase/plugins DYLD_LIBRARY_PATH=/Users/liangqi/qt/qt5-build/qtbase/lib${DYLD_LIBRARY_PATH:+:$DYLD_LIBRARY_PATH} cd ../ &&  ./tst_qtcpsocket.app/Contents/MacOS/tst_qtcpsocket 
********* Start testing of tst_QTcpSocket *********
Config: Using QtTest library 5.2.2, Qt 5.2.2
QDEBUG : tst_QTcpSocket::initTestCase() "qt-test-server.qt-test-net" 
PASS   : tst_QTcpSocket::initTestCase()
...
FAIL!  : tst_QTcpSocket::suddenRemoteDisconnect(WithoutProxy:Qt4 Client <-> Qt4 Server) 'serverProcess.waitForStarted()' returned FALSE. (Could not start /Users/liangqi/qt/qt5/qtbase/tests/auto/network/socket/qtcpsocket/stressTest/stressTest: No such file or directory)
   Loc: [/Users/liangqi/qt/qt5/qtbase/tests/auto/network/socket/qtcpsocket/tst_qtcpsocket.cpp(2250)]
PASS   : tst_QTcpSocket::suddenRemoteDisconnect(WithSocks5Proxy:Qt4 Client <-> Qt4 Server)
PASS   : tst_QTcpSocket::suddenRemoteDisconnect(WithSocks5ProxyAuth:Qt4 Client <-> Qt4 Server)
PASS   : tst_QTcpSocket::suddenRemoteDisconnect(WithHttpProxy:Qt4 Client <-> Qt4 Server)
PASS   : tst_QTcpSocket::suddenRemoteDisconnect(WithHttpProxyBasicAuth:Qt4 Client <-> Qt4 Server)
PASS   : tst_QTcpSocket::suddenRemoteDisconnect(WithoutProxy SSL:Qt4 Client <-> Qt4 Server)
PASS   : tst_QTcpSocket::suddenRemoteDisconnect(WithSocks5Proxy SSL:Qt4 Client <-> Qt4 Server)
PASS   : tst_QTcpSocket::suddenRemoteDisconnect(WithSocks5AuthProxy SSL:Qt4 Client <-> Qt4 Server)
PASS   : tst_QTcpSocket::suddenRemoteDisconnect(WithHttpProxy SSL:Qt4 Client <-> Qt4 Server)
PASS   : tst_QTcpSocket::suddenRemoteDisconnect(WithHttpProxyBasicAuth SSL:Qt4 Client <-> Qt4 Server)
...
Totals: 831 passed, 1 failed, 1 skipped
********* Finished testing of tst_QTcpSocket *********