dep-info + -Z no-analysis no longer ignore extern crates

[SiegeLord]

Compiling this code:

extern crate doesnt_exist;

fn main() {}

With:

rustc -Z no-analysis --emit dep-info -o test.d test.rs

Used to work (and still works with rust 1.7), but recently has started failing (circa rustc 1.10.0-nightly (bd93816 2016-04-25)) with this error:

test.rs:1:1: 1:27 error: can't find crate for `doesnt_exist` [E0463]
test.rs:1 extern crate doesnt_exist;
          ^~~~~~~~~~~~~~~~~~~~~~~~~~
error: aborting due to previous error

This makes that useful combination of flags no longer work. I suspect -Z no-analysis broke again.

[SiegeLord]

So this is broken again. Can this be reopened?