The UncrustifyCheck plugin passes os.stat.S_IWRITE to os.chmod, when attempting to change file permissions. os.stat.S_IWRITE does not exist as os.stat is a function. The correct value is stat.S_IWRITE. Signed-off-by: Joey Vagedes <joey.vagedes@gmail.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Sean Brogan <sean.brogan@microsoft.com> Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>