Minor fix.

uploader.sh

@@ -1,6 +1,7 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+echo "Checking upload queue dir..."
 export UPLOAD_QUEUE="${UPLOAD_QUEUE:-/data/upload-queue/}"
 mkdir -p "${UPLOAD_QUEUE}"
 
@@ -10,7 +11,7 @@ do
 	echo "Starting new loop..."
 	for pack in */; do
 		echo "Trying claim ${pack}..."
-		flock --verbose -x -nb "$pack" /upload-single.sh "$pack" || echo "Could not claim pack!"
+		flock --verbose -x --nonblock "$pack" /upload-single.sh "$pack" || echo "Could not claim pack!"
 	done
 	sleep 30
 done