Positioning rests in drum scores

[Sebastiano Vigna]

Apparently, rests cannot be positioned using notes in drum scores.
This does not compile:

\version "2.4.3"

\score {
\new DrumStaff <<
       \context DrumVoice = "1" { s1 }
       \drummode {
       <<
        { sn4\rest sn sn sn }
       >>
       }
>>
}

Is there any suggested workaround? I'm engraving a complex drum score
and the automatic rest positioning mechanism has completely gone amok. I
absolutely need absolute rest positioning.

-- 
Ciao,

                                        seba