qtconnectivity compilations fails in qt5.git#dev

src/bluetooth/qbluetoothserver.cpp
agent:2021/04/21 06:35:48 build.go:379: In file included from src/bluetooth/qbluetoothserver.cpp:42:
agent:2021/04/21 06:35:48 build.go:379: src/bluetooth/qbluetoothserver_p.h:186:12: error: unknown type name 'QMutex'
agent:2021/04/21 06:35:48 build.go:379:     static QMutex &channelMapMutex();
agent:2021/04/21 06:35:48 build.go:379:            ^
agent:2021/04/21 06:35:48 build.go:379: 1 error generated.