--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/helper-runtests.sh Wed May 11 16:40:16 2016 +0000
@@ -0,0 +1,7 @@
+#
+# Avoid interference from actual test env:
+
+unset HGTEST_JOBS
+unset HGTEST_TIMEOUT
+unset HGTEST_PORT
+unset HGTEST_SHELL