Suggest binding to a tuple if possible in the `useless_let_if_seq` lint

I could be missing something here, but it seems like clippy (0.0.212 (e3cb40e 2019-06-25)) is giving a false positive for this code (useless_let_if_seq)?

fn main() {
    
    let i = 1;
    
    let mut arr0 = vec![0,0,0];
    let mut more_arrs = vec![ vec![1,1,1], vec![2,2,2], vec![3,3,3] ];
    
    let first;
    let second;
    if i == 0 {
        first = &mut arr0;
        second = &mut more_arrs[0];
    } else {
        let (start, end) = more_arrs.split_at_mut(i);
        first = &mut start[start.len()-1]; 
        second = &mut end[0];
    }
    
    println!("{:?}", first);
    println!("{:?}", second);
    
}

https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=0cbbd72da8e9a800131ca458f1e76016

Might be similar to #2176 and #2918?

Reproduce the example in the linked Rust Playground, then inspect the implementation and tests for the useless_let_if_seq lint. The change is done when this valid conditional borrowing pattern is no longer reported incorrectly and tuple binding is suggested where appropriate.