Function scope_safeguard_fallback 

pub async fn scope_safeguard_fallback<F>(future: F) -> <F as Future>::Output
where
    F: Future,

Run the given future within a safeguard-fallback scope. Both commit_safeguard_fallback (inside the accepted-response owner) and take_last_safeguard_fallback (the runtime turn boundary) must execute within this scope for the data to be visible.