When parsing a (Qt 5.15.0 based) qmake based project, this appears in the General Messages pane:
C:/Qt/5.15.0/android/mkspecs/features/android/android_deployment_settings.prf(78): contains(): Encountered invalid regular expression '.*\qmake_qmake_immediate.qrc$'.
Has it to do with our porting of the (forked) qmake parser from QRegExp to QRegularExpression? Plain qmake does not emit that message.