I tried this code:

#[deprecated]
#[allow(unsafe_code)]
#[cfg(not(foo))]
use std::fs;

fn main() {}

I expected to see this happen: The suggestion should suggest removing use std::fs; and its attributes.

Instead, this happened: The suggestion span does not encompass the attributes. This causes cargo fix to remove the item, and leave the attributes applying to whatever happens to be next.

Meta

rustc 1.56.0-nightly (ccffcafd5 2021-08-11)

See also #56328 for a similar issue (although I think that one is subtly different).