Applying ports 174de7854349 to lang/mono6.8 breaks build: elfctl -i -e +wxneeded WRKSRC/mono/mini/mono-sgen elfctl: error opening file WRKSRC/mono/mini/mono-sgen: Text file busy
mono-sgen should be executing while you are trying to apply elfctl to it. Ensure that the file is not used as a process text.