error: invalid use of incomplete type 'QDir'

\qt\work\install\mkspecs\android-clang -o .obj\armeabi-v7a\qmediaplayer.obj playback\qmediaplayer.cpp
agent:2020/02/19 10:10:57 build.go:220: playback\qmediaplayer.cpp:370:36: error: incomplete type 'QDir' named in nested name specifier
agent:2020/02/19 10:10:57 build.go:220: QString tempFileName = QDir::tempPath() + media.request().url().path();
agent:2020/02/19 10:10:57 build.go:220: ^~~~~~
agent:2020/02/19 10:10:57 build.go:220: C:\Users\qt\work\install\include\QtCore/qfileinfo.h:51:7: note: forward declaration of 'QDir'
agent:2020/02/19 10:10:57 build.go:220: class QDir;
agent:2020/02/19 10:10:57 build.go:220: ^
agent:2020/02/19 10:10:57 build.go:220: playback\qmediaplayer.cpp:371:13: error: invalid use of incomplete type 'QDir'
agent:2020/02/19 10:10:57 build.go:220: QDir().mkpath(QFileInfo(tempFileName).path());
agent:2020/02/19 10:10:57 build.go:220: ^~~~~~
agent:2020/02/19 10:10:57 build.go:220: C:\Users\qt\work\install\include\QtCore/qfileinfo.h:51:7: note: forward declaration of 'QDir'
agent:2020/02/19 10:10:57 build.go:220: class QDir;

The error was in "qt/qt5", revision: af4d55ad061b0b62a8e0101217362f008b14c2a5

Build log: https://testresults.qt.io/logs/qt/qt5/c60bf8cbcf43fa3dd2c1de9c472a3992da7d0d50/MacOSMacOS_10_13x86_64MacOSWebAssemblyx86_64Clangqtci-macos-10.13-x86_64-2-dc4a1eDisableTests/39a53fc647f571a015ddc9fb8e628f0fd1b3fdc0/build_1582101701/log.txt.gz

Details: https://testresults.qt.io/coin/integration/qt/qt5/tasks/1582101229
Tested changes (refs/builds/qtci/5.14/1582101215):
https://codereview.qt-project.org/c/qt/qt5/+/289952 Update submodules on '5.14' in qt/qt5