qt/qtlocation Windows 10 x86_64 build has a race condition

agent:2019/10/30 06:32:06 build.go:220: 	C:\Utils\Jom\jom.exe -f Makefile.Release all
agent:2019/10/30 06:32:06 build.go:220: Cannot add commands to previously defined target ..\..\..\qml\QtLocation\Test\qmldir.
agent:2019/10/30 06:32:06 build.go:220: 	C:\Users\qt\work\install\bin\qmake.exe -install qinstall qmldir ..\..\..\qml\QtLocation\Test\qmldir
agent:2019/10/30 06:32:06 build.go:220: 	cl -BxC:\Users\qt\work\install\bin\qmake.exe -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -O2 -Zi -MD -utf-8 /wd4530 /wd4577 -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -E c:\Users\qt\work\install\mkspecs\features\data\dummy.cpp 2>NUL >.moc\release\moc_predefs.h
agent:2019/10/30 06:32:06 build.go:220: 	C:\Utils\Jom\jom.exe -f Makefile.Debug all
agent:2019/10/30 06:32:06 build.go:220: 	C:\Users\qt\work\install\bin\qmake.exe -install qinstall qmldir ..\..\..\qml\QtLocation\Test\qmldir
agent:2019/10/30 06:32:06 build.go:220: Error copying qmldir to ..\..\..\qml\QtLocation\Test\qmldir: Cannot create ..\..\..\qml\QtLocation\Test\qmldir for output
agent:2019/10/30 06:32:06 build.go:220: jom: C:\Users\qt\work\qt\qtlocation\tests\plugins\declarativetestplugin\Makefile.Debug [..\..\..\qml\QtLocation\Test\qmldir] Error 3