if you encounter this error
out/host/linux-x86/bin/jack: line 131: 31049 Killed $SERVER_PRG $SERVER_PORT_SERVICE $SERVER_PORT_ADMIN $SERVER_COUNT $SERVER_NB_COMPILE $SERVER_TIMEOUT >> $SERVER_LOG 2>&1
ERROR: Cannot launch Jack server
make: *** [out/target/common/obj/JAVA_LIBRARIES/framework_intermediates/with-local/classes.dex] Error 41
make: *** Waiting for unfinished jobs....its because ~/.jack has an incorrect permission you can fix it with
chmod 777 ~/.jack