indent-method-chain fails to indent in this case

[nikomatsakis]

    let llargs: Vec<_> =
        input_tys.iter()
                 .enumerate()
                 .map(|(i, _)| get_param(fcx.llfn, fcx.arg_pos(i+1) as u32))
                 .collect();

indents for me as

    let llargs: Vec<_> =
        input_tys.iter()
                 .enumerate()
                 .map(|(i, _)| get_param(fcx.llfn, fcx.arg_pos(i+1) as u32))
             .collect();

it also occurs to me that the impl will fail to indent properly if there is a // ... comment at the end of the previous line.

[nikomatsakis]

nm, wfm. I think I was using an outdated emacs session.