Internal Compiler Error on OSX Sierra

[trevoranderson]

Test case created with cargo new --bin on rustc 1.15.0-nightly (ebeee0e 2016-12-04)

fn repro()
{
    let q = Some(str);
}
fn main() {
    println!("Hello, world!");
}

Compiler Output:

   Compiling repro v0.1.0 (**censored**)
error: internal compiler error: ../src/librustc_typeck/check/mod.rs:4396: unexpected definition: PrimTy(TyStr)

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

thread 'rustc' panicked at 'Box<Any>', ../src/librustc_errors/lib.rs:423
note: Run with `RUST_BACKTRACE=1` for a backtrace.

error: Could not compile `repro`.

To learn more, run the command again with --verbose.

[est31]

This is a duplicate of #38155

[est31]

Should be fixed by the next time we have a nightly.

[sanxiyn]

Closing as a duplicate.