exit(255);
};
require PublicInbox::OnDestroy;
-my $auto_unlink = PublicInbox::OnDestroy->new(sub { unlink $lockfile });
+my $auto_unlink = PublicInbox::OnDestroy->new($$, sub { unlink $lockfile });
my ($perm, %seen);
if (-e $pi_config) {
open(my $oh, '<', $pi_config) or die "unable to read $pi_config: $!\n";