--- /dev/null
+From: Simon McVittie <smcv@debian.org>
+Date: Thu, 31 Mar 2016 14:32:55 +0100
+Subject: Probe for GNU parallel more accurately
+
+moreutils parallel isn't compatible with the command-line syntax
+used here. Because it doesn't implement GNU-style --help and exits 1
+when that option is given, this test was correctly skipped when
+using moreutils parallel, but only by mistake.
+
+moreutils parallel might conceivably gain --help and --version in
+future, but hopefully nothing incompatible with GNU parallel is going
+to gain a --gnu option.
+
+Also use the --gnu option to force the new command-line semantics;
+some versions optionally supported an incompatible command-line syntax
+taken from moreutils parallel.
+
+Signed-off-by: Simon McVittie <smcv@debian.org>
+Applied-upstream: 2016.5, https://github.com/ostreedev/ostree/commit/9dafc820241ed6e663ad4093660fc255f549aa26
+---
+ tests/test-admin-locking.sh | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/tests/test-admin-locking.sh b/tests/test-admin-locking.sh
+index 564295d..01814f9 100755
+--- a/tests/test-admin-locking.sh
++++ b/tests/test-admin-locking.sh
+@@ -25,8 +25,8 @@ set -euo pipefail
+ setup_os_repository "archive-z2" "syslinux"
+
+ # If parallel is not installed, skip the test
+-if ! parallel --help >/dev/null 2>&1; then
+- echo "1..0 # SKIP no /usr/bin/parallel"
++if ! parallel --gnu /bin/true </dev/null >/dev/null 2>&1; then
++ echo "1..0 # SKIP GNU parallel not available"
+ exit 0
+ fi
+
+@@ -42,7 +42,7 @@ echo "rev=${rev}"
+ ${CMD_PREFIX} ostree admin deploy --karg=root=LABEL=MOO --karg=quiet --os=testos testos:testos/buildmaster/x86_64-runtime
+ assert_has_dir sysroot/boot/ostree/testos-${bootcsum}
+
+-parallel_cmd=parallel
++parallel_cmd="parallel --gnu"
+ if parallel --help | grep -q -e --no-notice; then
+ parallel_cmd="${parallel_cmd} --no-notice"
+ fi