v0.1.6 fails to build on nightly

[mhristache]

/Users/mX/.cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-0.1.6/src/sync/seg_queue.rs:34:29: 34:43 error: transmute called with differently sized types: [usize; 32] (2048 bits) to [std::sync::atomic::AtomicBool; 32] (256 bits) [E0512]
/Users/mX/.cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-0.1.6/src/sync/seg_queue.rs:34             ready: unsafe { mem::transmute([0usize; SEG_SIZE]) },
                                                                                                                               ^~~~~~~~~~~~~~
/Users/mX/.cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-0.1.6/src/sync/seg_queue.rs:34:29: 34:43 help: run `rustc --explain E0512` to see a detailed explanation
error: aborting due to previous error
Build failed, waiting for other jobs to finish...
error: Could not compile `crossbeam`.

$ rustc --version
rustc 1.10.0-nightly (267cde259 2016-05-25)

[mhristache]

I guess same as rust-lang/rust#33724, which is caused by rust-lang/rust#33579

[mhristache]

I know v0.1.6 is a quite an old version but it's used by simple_parallel

[antoyo]

Now, it does not even work on stable rust (1.10).

Is this still a problem that needs to be fixed?

[mhristache]

I removed my dependency on simple_parallel so I have no idea if this is still an issue.

[antoyo]

I still get this error when running the simple_parallel example:

error[E0512]: transmute called with differently sized types: [usize; 32] (2048 bits) to [std::sync::atomic::AtomicBool; 32] (256 bits)
  --> ~/.cargo/registry/src/github.com-1ecc6299db9ec823/crossbeam-0.1.6/src/sync/seg_queue.rs:34:29
   |
34 |             ready: unsafe { mem::transmute([0usize; SEG_SIZE]) },
   |                             ^^^^^^^^^^^^^^ transmuting between 2048 bits and 256 bits

error: aborting due to previous error(s)

The problem can be fixed by bumping the crossbeam dependency to version 0.2.x. There was an effort to do that here, but it seems like simple_parallel is totally abandoned and won't be maintained anymore. It's superseded by rayon anyway, which should be better in every way.

Crossbeam is going through a revamp right now. Version 0.1.x is really old and shouldn't be used, so I don't see a good motivation to patch it. For that reason I'm closing this issue, but if you'd really like to have this fixed, do let me know. :)