warning C4834: discarding return value of function with [[nodiscard]] attribute

C:\Users\qt\work\qt\qtactiveqt\tools\dumpdoc\main.cpp(72): error C2220: the following warning is treated as an error
C:\Users\qt\work\qt\qtactiveqt\tools\dumpdoc\main.cpp(72): warning C4834: discarding return value of function with [[nodiscard]] attribute
ninja: build stopped: subcommand failed.
Process finished with error: exit status 1