no type for node 11004: expr 12 + x (id=11004) in fcx 0xb27f5338

[ristew]

While working with Cargo trying to bring piston up to date, the compiler broke.
Right before is

src/webp/vp8.rs:1177:9: 1177:37 error: the trait `core::ops::IndexMut<u32>` is not implemented for the type `[webp::vp8::MacroBlock]`
src/webp/vp8.rs:1177         self.top.as_mut_slice()[mbx].bpred = mb.bpred;

and backtrace:

thread 'rustc' panicked at 'Box<Any>', /build/buildd/rust-nightly-201501090408~44a287e~trusty/src/libsyntax/diagnostic.rs:182

stack backtrace:
   1: 0xb72b5cc0 - sys::backtrace::write::ha9a1ae195ebff231Czt
   2: 0xb72d6ef0 - <unknown>
   3: 0xb7246570 - rt::unwind::begin_unwind_inner::h5c6422a7f23efb212tz
   4: 0xb37c5820 - <unknown>
   5: 0xb37c6030 - diagnostic::Handler::bug::h37080b507ff1a298tWF
   6: 0xb61e13a0 - session::Session::bug::hf4cbf64e87a7e957iRq
   7: 0xb6e04830 - <unknown>
   8: 0xb6e36f50 - <unknown>
   9: 0xb6e37db0 - <unknown>
  10: 0xb6e7db90 - <unknown>
  11: 0xb6e7ae90 - <unknown>
  12: 0xb6e7aa30 - <unknown>
  13: 0xb6e7ae90 - <unknown>
  14: 0xb6e7db90 - <unknown>
  15: 0xb6e7aa30 - <unknown>
  16: 0xb6e7ae90 - <unknown>
  17: 0xb6e7db90 - <unknown>
  18: 0xb6e7aa30 - <unknown>
  19: 0xb6e7ae90 - <unknown>
  20: 0xb6e7db90 - <unknown>
  21: 0xb6e7aa30 - <unknown>
  22: 0xb6e7ae90 - <unknown>
  23: 0xb6e7db90 - <unknown>
  24: 0xb6e7aa30 - <unknown>
  25: 0xb6e742f0 - <unknown>
  26: 0xb6ea06e0 - <unknown>
  27: 0xb6ea4140 - <unknown>
  28: 0xb6e97c70 - <unknown>
  29: 0xb6ea0390 - <unknown>
  30: 0xb6e9eb20 - <unknown>
  31: 0xb6ea0390 - <unknown>
  32: 0xb6e9eb20 - <unknown>
  33: 0xb6f723a0 - <unknown>
  34: 0xb6f6c740 - check_crate::h7bd424b9d1e17a3723x
  35: 0xb75ed3a0 - driver::phase_3_run_analysis_passes::h812666c686a8a253gwa
  36: 0xb75d5a70 - driver::compile_input::h38c9a2fe74713aafxba
  37: 0xb76a8410 - <unknown>
  38: 0xb76a8270 - <unknown>
  39: 0xb76a70d0 - <unknown>
  40: 0xb7344ed0 - <unknown>
  41: 0xb7344ea0 - rust_try
  42: 0xb76a73b0 - <unknown>
  43: 0xb72c5940 - <unknown>
  44: 0xb35e8ea0 - start_thread
  45: 0xb7120472 - clone
  46:        0x0 - <unknown>

Could not compile `image`.

Caused by:
  Process didn't exit successfully: `rustc src/lib.rs --crate-name image --crate-type lib -g -C metadata=b2e8f75d1584c248 -C extra-filename=-b2e8f75d1584c248 --out-dir /home/riley/rust/image/target --emit=dep-info,link -L /home/riley/rust/image/target -L /home/riley/rust/image/target/deps --extern num=/home/riley/rust/image/target/deps/libnum-b8f97d4a5adf4c6e.rlib` (status=101)

and

rustc --version --verbose
rustc 1.0.0-nightly (44a287e6e 2015-01-08 17:03:40 -0800)
binary: rustc
commit-hash: 44a287e6eb22ec3c2a687fc156813577464017f7
commit-date: 2015-01-08 17:03:40 -0800
host: i686-unknown-linux-gnu
release: 1.0.0-nightly