diff --git a/tests/test-check-code-hg.t b/tests/test-check-code-hg.t
--- a/tests/test-check-code-hg.t
+++ b/tests/test-check-code-hg.t
@@ -8,7 +8,8 @@
 
 New errors are not allowed. Warnings are strongly discouraged.
 
-  $ hg manifest | xargs "$check_code" --warnings --nolineno --per-file=0
+  $ hg manifest | xargs "$check_code" --warnings --nolineno --per-file=0 \
+  > || false
   tests/test-hgweb-raw.t:0:
    >   $ while kill `cat hg.pid` 2>/dev/null; do sleep 0; done
    don't use kill, use killdaemons.py