error: trailing attribute after generic parameter --> $DIR/attrs-with-no-formal-in-generics-3.rs:8:44 | LL | where Q: for <#[allow(unused)] 'a, 'b, #[oops]> Fn(RefIntPair<'a,'b>) -> &'b u32 | ^^^^^^^ attributes must go before parameters error: aborting due to previous error