diff --git a/sub_scripts/launcher.sh b/sub_scripts/launcher.sh
index c5b3e3f..6e9b2e3 100755
--- a/sub_scripts/launcher.sh
+++ b/sub_scripts/launcher.sh
@@ -296,16 +296,21 @@ $(cat "$script_dir/sub_scripts/Build_lxc.log")"
 	COPY_LOG 1
 
     # Wait for apt to be available before the test.
+    apt_lock=0
     for try in `seq 1 17`
     do
             # Check if /var/lib/dpkg/lock is used by another process
             if sudo lxc-attach -n $lxc_name -- lsof /var/lib/dpkg/lock > /dev/null
             then
                 echo "apt is already in use..."
+                apt_lock=1
                 # Sleep an exponential time at each round
                 sleep $(( try * try ))
             fi
     done
+    if [ $apt_lock -eq 1 ]; then
+        echo "apt has released its lock."
+    fi
 
 	# Copy the package into the container.
 	rsync -rq --delete "$package_path" "$lxc_name": >> "$test_result" 2>&1