Path failedFile = output + "/nix-support/failed";
        if (pathExists(failedFile)) res.failed = true;

    /* Whether this build has failed with output, i.e., the build
       finished with exit code 0 but produced a file
       $out/nix-support/failed. */
    bool failed = false;

    /* FIXME: distinguish between permanent failures (a matching
       machine doesn't exist) and temporary failures (a matching
       machine is not available). */

        // FIXME: handle failed-with-output

        ((int) bsSuccess)

        ((int) (res.failed ? bsFailedWithOutput : bsSuccess))

      <img src="[% c.uri_for("/static/images/error_${size}.png") %]" alt="Failed (with result)" class="build-status" />

      <img src="[% c.uri_for("/static/images/error_${size}.png") %]" alt="Failed with output" class="build-status" />

      <span class="error">Build failed (with result)</span>

      <span class="error">Build failed with output</span>