Rvest: How to set values on a form without names

Question

I have a form that has the following features -- with "text" being the box for username in this case.

form = html_form(read_html(url))[[1]]
print(form)

<form> 'login' (GET )
  <input text> '':
  <input password> '':
  <input submit> '': log in
>

I dug more into what the form looked like:

> form$fields[1]
$`NULL`
$`name`
NULL

$type
[1] "text"

$value
NULL

$checked
NULL

$disabled
NULL

$readonly
NULL

$required
[1] FALSE

attr(,"class")
[1] "input"

I'm not sure how to alter the text and password perameters without a specific name to reference. This didn't work, for reference:

filled_form = set_values(form,
                         '' = "email@email.com",
                         '' = "p@ssword")

Nor did this work:

filled_form = set_values(form,
                         form$fields[1]$value = "email@email.com",
                         form$fields[2]$value ="p@ssword")

Any thoughts? Apologies in advance that I can't share the URL.