compiler-output.txt

$ RUST_BACKTRACE=1 rustc set_1.rs
set_1.rs:7:33: 7:36 error: mismatched types:
 expected `u16`,
    found `_`
(expected u16,
    found floating-point variable) [E0308]
set_1.rs:7     let mut final_score : u16 = 0.0;
                                           ^~~
error: internal compiler error: Impl DefId { krate: 2, node: 36957 } was matchable against Obligation(predicate=Binder(TraitPredicate(core::ops::Add<_>)),depth=1) but now is not
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
note: run with `RUST_BACKTRACE=1` for a backtrace
thread 'rustc' panicked at 'Box<Any>', /Users/rustbuild/src/rust-buildbot/slave/beta-dist-rustc-mac/build/src/libsyntax/diagnostic.rs:190

stack backtrace:
   1:        0x10ec74f77 - sys::backtrace::write::h799ab135045ca9ca1LC
   2:        0x10eca2e4d - panicking::on_panic::h9502e488a92fc8bcHAI
   3:        0x10ebc72de - rt::unwind::begin_unwind_inner::hf0537788ee16eadbiiI
   4:        0x10e39d5ae - rt::unwind::begin_unwind::h447731439410619827
   5:        0x10e39ddf9 - diagnostic::Handler::bug::hb6bac6e14e70580aZsB
   6:        0x10bec83be - middle::traits::select::SelectionContext<'cx, 'tcx>::rematch_impl::h00902254f92fe252QxT
   7:        0x10bec7d08 - middle::infer::InferCtxt<'a, 'tcx>::commit_if_ok::h14474907185931287891
   8:        0x10bea8e94 - middle::traits::select::SelectionContext<'cx, 'tcx>::confirm_candidate::h3f1d070f70ab815cMPS
   9:        0x10be7c9c6 - middle::traits::select::SelectionContext<'cx, 'tcx>::select::hc528f249f6251cb8OQQ
  10:        0x10be8c98a - middle::traits::project::project_type::h7ca468ea33bc79f1AwP
  11:        0x10be8a367 - middle::traits::project::opt_normalize_projection_type::h766518f8b1310230cpP
  12:        0x10be83d86 - middle::traits::project::poly_project_and_unify_type::closure.83535
  13:        0x10be81bc0 - middle::traits::project::poly_project_and_unify_type::h44012951a95c13e5l5O
  14:        0x10be79206 - middle::traits::fulfill::FulfillmentContext<'tcx>::select::h7d8cf023413c2180uHO
  15:        0x10be78848 - middle::traits::fulfill::FulfillmentContext<'tcx>::select_where_possible::h0397a49aa695a23cIGO
  16:        0x10b216433 - check::vtable::select_fcx_obligations_where_possible::h99330aa4e9f6a658d4b
  17:        0x10b25048d - check::FnCtxt<'a, 'tcx>::resolve_type_vars_if_possible::h7c8e59ec20a8f3b2qYo
  18:        0x10b2cca3e - check::op::check_binop::h7e7f29a781258fb2u5m
  19:        0x10b3103c3 - check::check_expr_with_unifier::h7970691808293538245
  20:        0x10b310c51 - check::check_expr_with_unifier::h7970691808293538245
  21:        0x10b2da9db - check::check_block_with_expected::h60bff5b1f9d55793fps
  22:        0x10b31e1fc - check::check_expr_with_unifier::h3387119839630377047
  23:        0x10b205225 - check::_match::check_match::closure.28878
  24:        0x10b204f31 - check::_match::check_match::h16ffe88f8d46da5fVmb
  25:        0x10b3109c9 - check::check_expr_with_unifier::h7970691808293538245
  26:        0x10b2da9db - check::check_block_with_expected::h60bff5b1f9d55793fps
  27:        0x10b2f5454 - check::check_block_no_value::hd753e3d237263edfgos
  28:        0x10b31e0f3 - check::check_expr_with_unifier::h3387119839630377047
  29:        0x10b205225 - check::_match::check_match::closure.28878
  30:        0x10b204f31 - check::_match::check_match::h16ffe88f8d46da5fVmb
  31:        0x10b3109c9 - check::check_expr_with_unifier::h7970691808293538245
  32:        0x10b33aef2 - check::check_decl_local::h3120cc1034f52b749is
  33:        0x10b2da6a1 - check::check_block_with_expected::h60bff5b1f9d55793fps
  34:        0x10b32b8bc - check::check_expr_with_unifier::h6698900367440735538
  35:        0x10b2da705 - check::check_block_with_expected::h60bff5b1f9d55793fps
  36:        0x10b2b6e05 - check::check_fn::h410d0ffafb47f675l1n
  37:        0x10b2d532e - check::check_bare_fn::h05c77be534ada2cfUQn
  38:        0x10b2ceee2 - check::check_item::h9d89bedf29e4fe82F9n
  39:        0x10b3ab676 - check_crate::closure.36302
  40:        0x10b3a5ae7 - check_crate::h09aa7856a322fd44bwC
  41:        0x10b0c4355 - driver::phase_3_run_analysis_passes::h1af60e7c926ca39dgGa
  42:        0x10b0a8a85 - driver::compile_input::h27cf4320fd56e5cbQba
  43:        0x10b166a15 - run_compiler::h93c68a2a3c26052bV4b
  44:        0x10b1641e2 - boxed::F.FnBox<A>::call_box::h4498816167135712709
  45:        0x10b1636d7 - rt::unwind::try::try_fn::h2387014819904265058
  46:        0x10ed2cea8 - rust_try_inner
  47:        0x10ed2ce95 - rust_try
  48:        0x10b1639ca - boxed::F.FnBox<A>::call_box::h4850138824497903476
  49:        0x10ec8c37d - sys::thread::create::thread_start::h42d6d904fce5365aihH
  50:     0x7fff927f6267 - _pthread_body
  51:     0x7fff927f61e4 - _pthread_start

set-1.rs

fn main() {
    let mut result : [u16; 26] = [0; 26];
    let idx : u8 = 1;
    result[idx as usize] = result[idx as usize ] + 1;

    let mut scores = [0.0; 26];
    let mut final_score : u16 = 0.0;
    for score in scores.iter() { final_score = final_score + *score };
}