coverage.sh: test target directory with empty lost+found

coverage.sh

@@ -251,6 +251,25 @@ else
 	./run_null.sh SUDO
 fi
 
+print_header "mode=root,variant=apt: existing directory with lost+found"
+cat << END > shared/test.sh
+#!/bin/sh
+set -eu
+export LC_ALL=C.UTF-8
+mkdir /tmp/debian-unstable
+mkdir /tmp/debian-unstable/lost+found
+$CMD --mode=root --variant=apt unstable /tmp/debian-unstable $mirror
+rmdir /tmp/debian-unstable/lost+found
+tar -C /tmp/debian-unstable --one-file-system -c . | tar -t | sort > tar2.txt
+diff -u tar1.txt tar2.txt
+rm -r /tmp/debian-unstable
+END
+if [ "$HAVE_QEMU" = "yes" ]; then
+	./run_qemu.sh
+else
+	./run_null.sh SUDO
+fi
+
 print_header "mode=unshare,variant=apt: create gzip compressed tarball"
 cat << END > shared/test.sh
 #!/bin/sh