try unicorn build without -j
MODIFY
unicorn_mode/build_unicorn_support.sh
unicorn_mode/build_unicorn_support.sh
@@ -182,7 +182,8 @@ echo "[+] Configuration complete."
echo "[*] Attempting to build unicornafl (fingers crossed!)..."
$MAKECMD clean # make doesn't seem to work for unicorn
-UNICORN_QEMU_FLAGS="--python=$PYTHONBIN" $MAKECMD -j$CORES || exit 1
+#UNICORN_QEMU_FLAGS="--python=$PYTHONBIN" $MAKECMD -j$CORES || exit 1
+UNICORN_QEMU_FLAGS="--python=$PYTHONBIN" $MAKECMD || exit 1
echo "[+] Build process successful!"

try unicorn build without -j