Message:    fmt.Sprintf("signature loading failed for %v with %v", u, err),
				StatusCode: http.StatusInternalServerError,
			}
		}
		opts.Verifier = v
	}

	if err = selfupdate.PrepareAndCheckBinary(reader, opts); err != nil {
		var pathErr *os.PathError
		if errors.As(err, &pathErr) {
			return AdminError{
				Code: AdminUpdateApplyFailure,
				Message: fmt.Sprintf("Unable to update the binary at %s: %v",