tst_QQmlDebugJS::stepIn() is flaky

Config: Using QtTest library 5.2.0, Qt 5.2.0
PASS : tst_QQmlDebugJS::initTestCase()
PASS : tst_QQmlDebugJS::connect()
PASS : tst_QQmlDebugJS::interrupt()
PASS : tst_QQmlDebugJS::getVersion()
PASS : tst_QQmlDebugJS::disconnect()
PASS : tst_QQmlDebugJS::setBreakpointInScriptOnCompleted()
PASS : tst_QQmlDebugJS::setBreakpointInScriptOnComponentCreated()
PASS : tst_QQmlDebugJS::setBreakpointInScriptOnTimerCallback()
PASS : tst_QQmlDebugJS::setBreakpointInScriptInDifferentFile()
QWARN : tst_QQmlDebugJS::setBreakpointInScriptOnComment() waitForSignal 2stopped() timed out after 1 ms
XFAIL : tst_QQmlDebugJS::setBreakpointInScriptOnComment() Relocation of breakpoints is disabled right now
Loc: [tst_qqmldebugjs.cpp(1031)]
PASS : tst_QQmlDebugJS::setBreakpointInScriptOnComment()
QWARN : tst_QQmlDebugJS::setBreakpointInScriptOnEmptyLine() waitForSignal 2stopped() timed out after 1 ms
XFAIL : tst_QQmlDebugJS::setBreakpointInScriptOnEmptyLine() Relocation of breakpoints is disabled right now
Loc: [tst_qqmldebugjs.cpp(1053)]
PASS : tst_QQmlDebugJS::setBreakpointInScriptOnEmptyLine()
PASS : tst_QQmlDebugJS::setBreakpointInScriptOnOptimizedBinding()
PASS : tst_QQmlDebugJS::setBreakpointInScriptThatQuits()
PASS : tst_QQmlDebugJS::clearBreakpoint()
PASS : tst_QQmlDebugJS::setExceptionBreak()
PASS : tst_QQmlDebugJS::stepNext()
QWARN : tst_QQmlDebugJS::stepIn() waitForSignal 2stopped() timed out after 5000 ms
FAIL! : tst_QQmlDebugJS::stepIn() 'QQmlDebugTest::waitForSignal(client, SIGNAL(stopped()))' returned FALSE. ()
Loc: [tst_qqmldebugjs.cpp(1286)]
QDEBUG : tst_QQmlDebugJS::stepIn()
DEBUGGEE OUTPUT:
"QML Debugger: Waiting for connection on port 3771...
"
QDEBUG : tst_QQmlDebugJS::stepIn() Process State: "running"
QDEBUG : tst_QQmlDebugJS::stepIn() Application Output: "QML Debugger: Waiting for connection on port 3771...
"
PASS : tst_QQmlDebugJS::stepOut()
PASS : tst_QQmlDebugJS::continueDebugging()
PASS : tst_QQmlDebugJS::backtrace()
PASS : tst_QQmlDebugJS::getFrameDetails()
PASS : tst_QQmlDebugJS::getScopeDetails()
PASS : tst_QQmlDebugJS::getScripts()
PASS : tst_QQmlDebugJS::cleanupTestCase()
Totals: 23 passed, 1 failed, 0 skipped