tst_Dialogs failed on macOS 10.13/10.14

agent:2019/06/20 17:50:15 build.go:207: /Users/qt/work/qt/qtwebengine/tests/auto/quick/dialogs/target_wrapper.sh  ./tst_dialogs -o /Users/qt/work/testresults/tests/auto/quick/dialogs571575818,xml -o -,txt
agent:2019/06/20 17:50:15 build.go:207: ********* Start testing of tst_Dialogs *********
agent:2019/06/20 17:50:15 build.go:207: Config: Using QtTest library 5.14.0, Qt 5.14.0 (x86_64-little_endian-lp64 shared (dynamic) release build; by Clang 10.0.0 (clang-1000.11.45.5) (Apple))
agent:2019/06/20 17:50:15 build.go:207: QWARN  : tst_Dialogs::initTestCase() Attribute Qt::AA_ShareOpenGLContexts must be set before QCoreApplication is created.
agent:2019/06/20 17:50:16 build.go:207: PASS   : tst_Dialogs::initTestCase()
agent:2019/06/20 17:50:16 build.go:207: QDEBUG : tst_Dialogs::contextMenuRequested() qml: Wooohooo loading page from qrc failed !
agent:2019/06/20 17:51:38 build.go:207: FAIL!  : tst_Dialogs::contextMenuRequested() Compared values are not the same
agent:2019/06/20 17:51:38 build.go:207:    Actual   ((m_listner->ready())): 0
agent:2019/06/20 17:51:38 build.go:207:    Expected (true)                : 1
agent:2019/06/20 17:51:38 build.go:207:    Loc: [tst_dialogs.cpp(119)]
agent:2019/06/20 17:52:00 build.go:207: FAIL!  : tst_Dialogs::javaScriptDialogRequested(AlertDialog) Compared values are not the same
agent:2019/06/20 17:52:00 build.go:207:    Actual   (((dialogSpy.count()))): 0
agent:2019/06/20 17:52:00 build.go:207:    Expected (1)                    : 1
agent:2019/06/20 17:52:00 build.go:207:    Loc: [tst_dialogs.cpp(221)]
agent:2019/06/20 17:52:20 build.go:207: FAIL!  : tst_Dialogs::javaScriptDialogRequested(PromptDialog) Compared values are not the same
agent:2019/06/20 17:52:20 build.go:207:    Actual   (((dialogSpy.count()))): 0
agent:2019/06/20 17:52:20 build.go:207:    Expected (1)                    : 1
agent:2019/06/20 17:52:20 build.go:207:    Loc: [tst_dialogs.cpp(221)]
agent:2019/06/20 17:52:41 build.go:207: FAIL!  : tst_Dialogs::javaScriptDialogRequested(ConfirmDialog) Compared values are not the same
agent:2019/06/20 17:52:41 build.go:207:    Actual   (((dialogSpy.count()))): 0
agent:2019/06/20 17:52:41 build.go:207:    Expected (1)                    : 1
agent:2019/06/20 17:52:41 build.go:207:    Loc: [tst_dialogs.cpp(221)]
agent:2019/06/20 17:53:02 build.go:207: FAIL!  : tst_Dialogs::colorDialogRequested() '(m_listner->ready())' returned FALSE. ()
agent:2019/06/20 17:53:02 build.go:207:    Loc: [tst_dialogs.cpp(95)]
agent:2019/06/20 17:53:23 build.go:207: FAIL!  : tst_Dialogs::fileDialogRequested() '(m_listner->ready())' returned FALSE. ()
agent:2019/06/20 17:53:23 build.go:207:    Loc: [tst_dialogs.cpp(95)]
agent:2019/06/20 17:53:23 build.go:207: QDEBUG : tst_Dialogs::authenticationDialogRequested(Http Authentication Dialog) qml: Wooohooo loading page from qrc failed !
agent:2019/06/20 17:53:24 build.go:207: PASS   : tst_Dialogs::authenticationDialogRequested(Http Authentication Dialog)
agent:2019/06/20 17:53:24 build.go:207: QDEBUG : tst_Dialogs::authenticationDialogRequested(Proxy Authentication Dialog) qml: Wooohooo loading page from qrc failed !
agent:2019/06/20 17:53:24 build.go:207: QDEBUG : tst_Dialogs::authenticationDialogRequested(Proxy Authentication Dialog) qml: Wooohooo loading page from qrc failed !
agent:2019/06/20 17:53:24 build.go:207: PASS   : tst_Dialogs::authenticationDialogRequested(Proxy Authentication Dialog)
agent:2019/06/20 17:53:24 build.go:207: PASS   : tst_Dialogs::cleanupTestCase()
agent:2019/06/20 17:53:24 build.go:207: Totals: 4 passed, 6 failed, 0 skipped, 0 blacklisted, 188892ms