test_expect_success "proc-receive: report unknown reference ($PROTOCOL/porcelain)" '
test_must_fail git -C workbench push --porcelain origin \
HEAD:refs/for/a/b/c/my/topic \
- >out 2>&1 &&
- make_user_friendly_and_stable_output <out >actual &&
+ >out-$test_count 2>&1 &&
+ make_user_friendly_and_stable_output <out-$test_count >actual &&
cat >expect <<-EOF &&
remote: # pre-receive hook
remote: pre-receive< <ZERO-OID> <COMMIT-A> refs/for/a/b/c/my/topic