Does not work with the latest Rust nightlies

[frewsxcv]

Stopped working after rust-lang/rust@3fd5fdd

Output I get when I try to compile a Rust version after the change above: https://gist.githubusercontent.com/frewsxcv/ca3ef34cab9fd96edd44fc5de585044d/raw/837b8b6ccbfa682a34977233f535c186e4375c93/gistfile1.txt

A lot of errors like:

/root/.cargo/registry/src/github.com-1ecc6299db9ec823/rayon-0.4.2/src/par_iter/weight.rs:48: undefined reference to `__afl_prev_loc'

[frewsxcv]

For the record, one can reproduce this issue by building this crate: https://github.com/frewsxcv/rust-belt-rust-fuzzing-workshop/tree/master/exercise2/jpeg-decoder

[frewsxcv]

Added a branch with minimal changes to reproduce this issue. Just run ./reproduce-issue.sh

https://github.com/frewsxcv/afl.rs/compare/rust-issue?expand=1

[frewsxcv]

First nightly it fails on: 2016-09-15. Last nightly it works on: 2016-09-13.

[frewsxcv]

Might be related to rust-lang/rust#39782

Might be worth trying to use rustc's LLVM it builds instead of relying on the system one

[frewsxcv]

should be resolved with the new version https://users.rust-lang.org/t/announcing-afl-rs-0-2-bindings-for-american-fuzzy-lop/13981