my $idles = $c->model('DB::BuildSteps')->search(
            { stoptime => { '!=', undef } },
            { select => [ 'machine', { max => 'stoptime', -as => 'max_stoptime' }], group_by => "machine" });
    while (my $idle = $idles->next) {
        ${$machines}{$idle->machine}{'idle'} = $idle->get_column('max_stoptime');

    # Add entry for localhost.
    ${$machines}{''} //= {};
    # Get the last finished build step for each machine.
    foreach my $m (keys %{$machines}) {
        my $idle = $c->model('DB::BuildSteps')->find(
            { machine => "$m", stoptime => { '!=', undef } },
            { order_by => 'stoptime desc', rows => 1 });
        ${$machines}{$m}{'idle'} = $idle ? $idle->stoptime : 0;

          [% IF !m.key || m.value.maxJobs %]
            Enabled:
          [% ELSE %]
            Disabled:
          [% END %] <tt>[% name %]</tt>

          <tt>[% name %]</tt>

          <tr><td colspan="5">Idle since [% INCLUDE renderDuration duration = curTime - m.value.idle %]</td></tr>

          <tr><td colspan="5">Idle for [% INCLUDE renderDuration duration = curTime - m.value.idle %]</td></tr>