<p dir="auto">I get an ICE if I checkout <a href="https://github.com/andrew-d/tinycdb-rs/commit/a0f2ed6303bd389a2817e38851f1919b857eeec2">this commit</a> (note - library is a work in progress, but i committed exactly where I got the ICE) and run <code class="notranslate">cargo test</code>.  The error is:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="&lt;std macros&gt;:8:12: 154:35 error: cannot apply unary operator `!` to type `&amp;[u8]`
&lt;std macros&gt;:8         if !$cond {
&lt;std macros&gt;:9             fail!($($arg),+)
&lt;std macros&gt;:10         }
&lt;std macros&gt;:11     );
&lt;std macros&gt;:12 )
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://doc.rust-lang.org/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' failed at 'index out of bounds: the len is 12 but the index is 12', /home/rustbuild/src/rust-buildbot/slave/nightly-linux/build/src/libsyntax/lib.rs:1"><pre class="notranslate"><code class="notranslate">&lt;std macros&gt;:8:12: 154:35 error: cannot apply unary operator `!` to type `&amp;[u8]`
&lt;std macros&gt;:8         if !$cond {
&lt;std macros&gt;:9             fail!($($arg),+)
&lt;std macros&gt;:10         }
&lt;std macros&gt;:11     );
&lt;std macros&gt;:12 )
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://doc.rust-lang.org/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' failed at 'index out of bounds: the len is 12 but the index is 12', /home/rustbuild/src/rust-buildbot/slave/nightly-linux/build/src/libsyntax/lib.rs:1
</code></pre></div>
<p dir="auto">I'm running today's nightly build of rustc (<code class="notranslate">rustc 0.12.0-pre-nightly (d30001d04 2014-08-16 00:46:15 +0000)</code>), and using a recent-ish version of Cargo (<code class="notranslate">cargo 0.0.1-pre-nightly (b272701 2014-08-14 23:16:18 -0700)</code>).</p>
<p dir="auto">Running with <code class="notranslate">RUST_BACKTRACE=1</code> gives:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="stack backtrace:
   1:     0x7f196752fa60 - rt::backtrace::imp::write::h915f70b87af05b8cmxr
   2:     0x7f1967532b00 - failure::on_fail::h3bfbb66e809f10e63Sr
   3:     0x7f1967d09ee0 - unwind::begin_unwind_inner::hdda436f89ca4acd6Zhe
   4:     0x7f1967d09bd0 - unwind::begin_unwind_fmt::hb8e515de17081e67pfe
   5:     0x7f1967d09b90 - rust_begin_unwind
   6:     0x7f1967d4fa90 - failure::begin_unwind::h1c162896c5429cfbYDk
   7:     0x7f1967d53730 - failure::fail_bounds_check::h8e9ee7819434fe19aCk
   8:     0x7f1966142c80 - codemap::FileMap::get_line::h19b3f017dda66d96qzE
   9:     0x7f196614d950 - diagnostic::emit::h3e86c6133df605f2j0F
  10:     0x7f196614a1c0 - diagnostic::EmitterWriter.Emitter::emit::h58a90c7e6af80dd0QVF
  11:     0x7f19661485f0 - diagnostic::Handler::emit::h2e5607c086da9d01fDF
  12:     0x7f1966141480 - diagnostic::SpanHandler::span_err::ha9729a9b17106068urF
  13:     0x7f19686531a0 - middle::typeck::infer::InferCtxt&lt;'a&gt;::type_error_message_str_with_expected::hc33c9099d20b534atde
  14:     0x7f1968701930 - middle::typeck::infer::InferCtxt&lt;'a&gt;::type_error_message::h6af320b34ce8ad0eUke
  15:     0x7f1968735220 - middle::typeck::check::check_expr_with_unifier::check_user_unop::closure.123804
  16:     0x7f1968734760 - middle::typeck::check::check_expr_with_unifier::lookup_op_method::hb7de34575e112e04HbW
  17:     0x7f19687142c0 - middle::typeck::check::check_expr_with_unifier::check_user_unop::h7fb43db6395c7721BqW
  18:     0x7f1968706960 - middle::typeck::check::check_expr_with_unifier::h7f07d1d05896e44fSXV
  19:     0x7f1968706960 - middle::typeck::check::check_expr_with_unifier::h7f07d1d05896e44fSXV
  20:     0x7f19687656a0 - middle::typeck::check::check_stmt::h139e8f1cea959a0502X
  21:     0x7f19686cf610 - middle::typeck::check::check_block_with_expected::h32b2d067c318c94ad7X
  22:     0x7f1968706960 - middle::typeck::check::check_expr_with_unifier::h7f07d1d05896e44fSXV
  23:     0x7f19686cf610 - middle::typeck::check::check_block_with_expected::h32b2d067c318c94ad7X
  24:     0x7f19686cb3a0 - middle::typeck::check::check_fn::h11b95bd8147ec11f3dT
  25:     0x7f1968714de0 - middle::typeck::check::check_expr_with_unifier::check_expr_fn::h0589615023e0987dLvW
  26:     0x7f1968706960 - middle::typeck::check::check_expr_with_unifier::h7f07d1d05896e44fSXV
  27:     0x7f19687042c0 - middle::typeck::check::check_argument_types::ha6ecc6e8415348b0xmV
  28:     0x7f1968706960 - middle::typeck::check::check_expr_with_unifier::h7f07d1d05896e44fSXV
  29:     0x7f19687656a0 - middle::typeck::check::check_stmt::h139e8f1cea959a0502X
  30:     0x7f19686cf610 - middle::typeck::check::check_block_with_expected::h32b2d067c318c94ad7X
  31:     0x7f19686cb3a0 - middle::typeck::check::check_fn::h11b95bd8147ec11f3dT
  32:     0x7f19686cb0c0 - middle::typeck::check::check_bare_fn::h0b6077c308262260I2S
  33:     0x7f19686c4220 - middle::typeck::check::check_item::habadeb79d560f4d0QBT
  34:     0x7f19686c5f10 - visit::walk_item::h15187993146872906571
  35:     0x7f19686c5f10 - visit::walk_item::h15187993146872906571
  36:     0x7f19686caec0 - middle::typeck::check::check_item_types::h63a60aa7829eefedZ1S
  37:     0x7f19680e3300 - util::common::time::h2328891505148832078
  38:     0x7f19688d8b50 - middle::typeck::check_crate::h266f9d5cd5ece381vFk
  39:     0x7f19689a6180 - driver::driver::phase_3_run_analysis_passes::h53949348bfafe8ffJfz
  40:     0x7f19689a12c0 - driver::driver::compile_input::hd2d14ec13437de9cP1y
  41:     0x7f1968a4e150 - driver::run_compiler::he03a385a4310d17aJzC
  42:     0x7f1968a4e060 - driver::main_args::closure.137214
  43:     0x7f1968a60a30 - task::TaskBuilder&lt;S&gt;::try_future::closure.138375
  44:     0x7f1968a60830 - task::TaskBuilder&lt;S&gt;::spawn_internal::closure.138352
  45:     0x7f19694afb30 - task::spawn_opts::closure.8325
  46:     0x7f1967d61f70 - rust_try_inner
  47:     0x7f1967d61f60 - rust_try
  48:     0x7f1967d07540 - unwind::try::hc4ccde5733fe2f0cf6d
  49:     0x7f1967d072e0 - task::Task::run::h4d1bcb29f70db0c3xcd
  50:     0x7f19694af8f0 - task::spawn_opts::closure.8271
  51:     0x7f1967d09120 - thread::thread_start::h8729f7243e18bd84jBd
  52:     0x7f1966fbf060 - start_thread
  53:     0x7f19679d8489 - __clone
  54:                0x0 - &lt;unknown&gt;"><pre class="notranslate"><code class="notranslate">stack backtrace:
   1:     0x7f196752fa60 - rt::backtrace::imp::write::h915f70b87af05b8cmxr
   2:     0x7f1967532b00 - failure::on_fail::h3bfbb66e809f10e63Sr
   3:     0x7f1967d09ee0 - unwind::begin_unwind_inner::hdda436f89ca4acd6Zhe
   4:     0x7f1967d09bd0 - unwind::begin_unwind_fmt::hb8e515de17081e67pfe
   5:     0x7f1967d09b90 - rust_begin_unwind
   6:     0x7f1967d4fa90 - failure::begin_unwind::h1c162896c5429cfbYDk
   7:     0x7f1967d53730 - failure::fail_bounds_check::h8e9ee7819434fe19aCk
   8:     0x7f1966142c80 - codemap::FileMap::get_line::h19b3f017dda66d96qzE
   9:     0x7f196614d950 - diagnostic::emit::h3e86c6133df605f2j0F
  10:     0x7f196614a1c0 - diagnostic::EmitterWriter.Emitter::emit::h58a90c7e6af80dd0QVF
  11:     0x7f19661485f0 - diagnostic::Handler::emit::h2e5607c086da9d01fDF
  12:     0x7f1966141480 - diagnostic::SpanHandler::span_err::ha9729a9b17106068urF
  13:     0x7f19686531a0 - middle::typeck::infer::InferCtxt&lt;'a&gt;::type_error_message_str_with_expected::hc33c9099d20b534atde
  14:     0x7f1968701930 - middle::typeck::infer::InferCtxt&lt;'a&gt;::type_error_message::h6af320b34ce8ad0eUke
  15:     0x7f1968735220 - middle::typeck::check::check_expr_with_unifier::check_user_unop::closure.123804
  16:     0x7f1968734760 - middle::typeck::check::check_expr_with_unifier::lookup_op_method::hb7de34575e112e04HbW
  17:     0x7f19687142c0 - middle::typeck::check::check_expr_with_unifier::check_user_unop::h7fb43db6395c7721BqW
  18:     0x7f1968706960 - middle::typeck::check::check_expr_with_unifier::h7f07d1d05896e44fSXV
  19:     0x7f1968706960 - middle::typeck::check::check_expr_with_unifier::h7f07d1d05896e44fSXV
  20:     0x7f19687656a0 - middle::typeck::check::check_stmt::h139e8f1cea959a0502X
  21:     0x7f19686cf610 - middle::typeck::check::check_block_with_expected::h32b2d067c318c94ad7X
  22:     0x7f1968706960 - middle::typeck::check::check_expr_with_unifier::h7f07d1d05896e44fSXV
  23:     0x7f19686cf610 - middle::typeck::check::check_block_with_expected::h32b2d067c318c94ad7X
  24:     0x7f19686cb3a0 - middle::typeck::check::check_fn::h11b95bd8147ec11f3dT
  25:     0x7f1968714de0 - middle::typeck::check::check_expr_with_unifier::check_expr_fn::h0589615023e0987dLvW
  26:     0x7f1968706960 - middle::typeck::check::check_expr_with_unifier::h7f07d1d05896e44fSXV
  27:     0x7f19687042c0 - middle::typeck::check::check_argument_types::ha6ecc6e8415348b0xmV
  28:     0x7f1968706960 - middle::typeck::check::check_expr_with_unifier::h7f07d1d05896e44fSXV
  29:     0x7f19687656a0 - middle::typeck::check::check_stmt::h139e8f1cea959a0502X
  30:     0x7f19686cf610 - middle::typeck::check::check_block_with_expected::h32b2d067c318c94ad7X
  31:     0x7f19686cb3a0 - middle::typeck::check::check_fn::h11b95bd8147ec11f3dT
  32:     0x7f19686cb0c0 - middle::typeck::check::check_bare_fn::h0b6077c308262260I2S
  33:     0x7f19686c4220 - middle::typeck::check::check_item::habadeb79d560f4d0QBT
  34:     0x7f19686c5f10 - visit::walk_item::h15187993146872906571
  35:     0x7f19686c5f10 - visit::walk_item::h15187993146872906571
  36:     0x7f19686caec0 - middle::typeck::check::check_item_types::h63a60aa7829eefedZ1S
  37:     0x7f19680e3300 - util::common::time::h2328891505148832078
  38:     0x7f19688d8b50 - middle::typeck::check_crate::h266f9d5cd5ece381vFk
  39:     0x7f19689a6180 - driver::driver::phase_3_run_analysis_passes::h53949348bfafe8ffJfz
  40:     0x7f19689a12c0 - driver::driver::compile_input::hd2d14ec13437de9cP1y
  41:     0x7f1968a4e150 - driver::run_compiler::he03a385a4310d17aJzC
  42:     0x7f1968a4e060 - driver::main_args::closure.137214
  43:     0x7f1968a60a30 - task::TaskBuilder&lt;S&gt;::try_future::closure.138375
  44:     0x7f1968a60830 - task::TaskBuilder&lt;S&gt;::spawn_internal::closure.138352
  45:     0x7f19694afb30 - task::spawn_opts::closure.8325
  46:     0x7f1967d61f70 - rust_try_inner
  47:     0x7f1967d61f60 - rust_try
  48:     0x7f1967d07540 - unwind::try::hc4ccde5733fe2f0cf6d
  49:     0x7f1967d072e0 - task::Task::run::h4d1bcb29f70db0c3xcd
  50:     0x7f19694af8f0 - task::spawn_opts::closure.8271
  51:     0x7f1967d09120 - thread::thread_start::h8729f7243e18bd84jBd
  52:     0x7f1966fbf060 - start_thread
  53:     0x7f19679d8489 - __clone
  54:                0x0 - &lt;unknown&gt;
</code></pre></div>
<h2 dir="auto"><em>Believed</em> current test case</h2>
<p dir="auto">(pnkfelix says: "if you are looking at this bug, please try to keep this test up-to-date ... potentially by checking the newest linked dupes in the comment feed below.")</p>
<div class="highlight highlight-source-rust notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="// Very

// sensitive
pub struct BytePos(pub u32);

// to particular

// line numberings / offsets

fn main() {
    let x = BytePos(1);

    assert!(x, x);
}"><pre class="notranslate"><span class="pl-c">// Very</span>

<span class="pl-c">// sensitive</span>
<span class="pl-k">pub</span> <span class="pl-k">struct</span> <span class="pl-smi">BytePos</span><span class="pl-kos">(</span><span class="pl-k">pub</span> <span class="pl-smi">u32</span><span class="pl-kos">)</span><span class="pl-kos">;</span>

<span class="pl-c">// to particular</span>

<span class="pl-c">// line numberings / offsets</span>

<span class="pl-k">fn</span> <span class="pl-en">main</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">{</span>
    <span class="pl-k">let</span> x = <span class="pl-v">BytePos</span><span class="pl-kos">(</span><span class="pl-c1">1</span><span class="pl-kos">)</span><span class="pl-kos">;</span>

    <span class="pl-en">assert</span><span class="pl-en">!</span><span class="pl-kos">(</span>x, x<span class="pl-kos">)</span><span class="pl-kos">;</span>
<span class="pl-kos">}</span></pre></div>
<h2 dir="auto">Original Bug Filed</h2>
<p dir="auto">Script to reproduce:</p>
<div class="highlight highlight-source-rust notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="fn main() {
    // if any comment line is removed, the ICE disappears
    // adding more lines keep the ICE alive
    //
    //
    //
    //
    //
    //
    //
    //
    //
    assert!(vec!(1.0), vec!(1.0))
}"><pre class="notranslate"><span class="pl-k">fn</span> <span class="pl-en">main</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">{</span>
    <span class="pl-c">// if any comment line is removed, the ICE disappears</span>
    <span class="pl-c">// adding more lines keep the ICE alive</span>
    <span class="pl-c">//</span>
    <span class="pl-c">//</span>
    <span class="pl-c">//</span>
    <span class="pl-c">//</span>
    <span class="pl-c">//</span>
    <span class="pl-c">//</span>
    <span class="pl-c">//</span>
    <span class="pl-c">//</span>
    <span class="pl-c">//</span>
    <span class="pl-en">assert</span><span class="pl-en">!</span><span class="pl-kos">(</span>vec!<span class="pl-kos">(</span><span class="pl-c1">1.0</span><span class="pl-kos">)</span>, vec!<span class="pl-kos">(</span><span class="pl-c1">1.0</span><span class="pl-kos">)</span><span class="pl-kos">)</span>
<span class="pl-kos">}</span></pre></div>
<p dir="auto">Backtrace:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="$ RUST_BACKTRACE=1 rustc ice.rs
&lt;std macros&gt;:8:12: 13:23 error: cannot apply unary operator `!` to type `std::vec::Vec&lt;&lt;generic float #0&gt;&gt;`
&lt;std macros&gt;:8         if !$cond {
&lt;std macros&gt;:9             fail!($($arg),+)
&lt;std macros&gt;:10         }
&lt;std macros&gt;:11     );
&lt;std macros&gt;:12 )
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://static.rust-lang.org/doc/master/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' failed at 'index out of bounds: the len is 12 but the index is 12', /var/tmp/paludis/build/dev-lang-rust-scm/work/rust-scm/src/libsyntax/lib.rs:1
stack backtrace:
   1:     0x7f0c3dda8180 - rt::backtrace::imp::write::h706b65acfe967902xTF::v0.11.pre
   2:     0x7f0c3dd11730 - rt::unwind::begin_unwind_inner::hcc57db58853efcfdAtF::v0.11.pre
   3:     0x7f0c3dda7e10 - &lt;unknown&gt;
   4:     0x7f0c3dda7d30 - rust_fail_bounds_check
   5:     0x7f0c3ddb9a90 - failure::fail_bounds_check::h8ed58f060b870dd6EwF::v0.11.pre
   6:     0x7f0c3d1d80f0 - codemap::FileMap::get_line::hbf104ad3bfda6f77Drd::v0.11.pre
   7:     0x7f0c3d1d4e90 - &lt;unknown&gt;
   8:     0x7f0c3d1ccd40 - diagnostic::EmitterWriter.Emitter::emit::h7c42f3840a82760aQcc::v0.11.pre
   9:     0x7f0c3d1c9f90 - diagnostic::Handler::emit::h971cc5635478154dV0b::v0.11.pre
  10:     0x7f0c3d1c8ec0 - diagnostic::SpanHandler::span_err::h3735f152282993cc3Sb::v0.11.pre
  11:     0x7f0c3eadda90 - middle::typeck::infer::InferCtxt&lt;'a&gt;::type_error_message_str_with_expected::he1b302cd7901cc2apJq::v0.11.pre
  12:     0x7f0c3eb7f0e0 - middle::typeck::infer::InferCtxt&lt;'a&gt;::type_error_message::h6e536a01d806a7af7Qq::v0.11.pre
  13:     0x7f0c3eb8d9f0 - &lt;unknown&gt;
  14:     0x7f0c3eb8b250 - &lt;unknown&gt;
  15:     0x7f0c3eb8d650 - &lt;unknown&gt;
  16:     0x7f0c3eb7fb20 - &lt;unknown&gt;
  17:     0x7f0c3eb7fb20 - &lt;unknown&gt;
  18:     0x7f0c3eb5fd00 - middle::typeck::check::check_block_with_expected::hec61a0d86b711c5ck7c::v0.11.pre
  19:     0x7f0c3eb5af90 - &lt;unknown&gt;
  20:     0x7f0c3eb5ad30 - &lt;unknown&gt;
  21:     0x7f0c3eb53790 - middle::typeck::check::check_item::he7c19452bac809220R8::v0.11.pre
  22:     0x7f0c3eb5ab30 - middle::typeck::check::check_item_types::hca38e25e2d3c1969ek8::v0.11.pre
  23:     0x7f0c3ec9d280 - &lt;unknown&gt;
  24:     0x7f0c3ec9c090 - middle::typeck::check_crate::h540b9b663571145fQgw::v0.11.pre
  25:     0x7f0c3f0e8e90 - driver::driver::phase_3_run_analysis_passes::h129732fc31300f8bbei::v0.11.pre
  26:     0x7f0c3f0eef10 - driver::driver::compile_input::h36b4d97be6c65511gEi::v0.11.pre
  27:     0x7f0c3f1143c0 - run_compiler::hd111892d49d8dfe1saq::v0.11.pre
  28:     0x7f0c3f12ffb0 - &lt;unknown&gt;
  29:     0x7f0c3f12e860 - &lt;unknown&gt;
  30:     0x7f0c3f129020 - &lt;unknown&gt;
  31:     0x7f0c3e2ce670 - &lt;unknown&gt;
  32:     0x7f0c3dd9f430 - &lt;unknown&gt;
  33:     0x7f0c3ddc04a0 - rust_try
  34:     0x7f0c3dd9f270 - rt::task::Task::run::hd2e6ec18f16de5eeiiD::v0.11.pre
  35:     0x7f0c3e2ce440 - &lt;unknown&gt;
  36:     0x7f0c3dda6c60 - &lt;unknown&gt;
  37:     0x7f0c3ba9c000 - start_thread
  38:     0x7f0c3d9e43d9 - clone
  39:                0x0 - &lt;unknown&gt;"><pre class="notranslate"><code class="notranslate">$ RUST_BACKTRACE=1 rustc ice.rs
&lt;std macros&gt;:8:12: 13:23 error: cannot apply unary operator `!` to type `std::vec::Vec&lt;&lt;generic float #0&gt;&gt;`
&lt;std macros&gt;:8         if !$cond {
&lt;std macros&gt;:9             fail!($($arg),+)
&lt;std macros&gt;:10         }
&lt;std macros&gt;:11     );
&lt;std macros&gt;:12 )
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://static.rust-lang.org/doc/master/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' failed at 'index out of bounds: the len is 12 but the index is 12', /var/tmp/paludis/build/dev-lang-rust-scm/work/rust-scm/src/libsyntax/lib.rs:1
stack backtrace:
   1:     0x7f0c3dda8180 - rt::backtrace::imp::write::h706b65acfe967902xTF::v0.11.pre
   2:     0x7f0c3dd11730 - rt::unwind::begin_unwind_inner::hcc57db58853efcfdAtF::v0.11.pre
   3:     0x7f0c3dda7e10 - &lt;unknown&gt;
   4:     0x7f0c3dda7d30 - rust_fail_bounds_check
   5:     0x7f0c3ddb9a90 - failure::fail_bounds_check::h8ed58f060b870dd6EwF::v0.11.pre
   6:     0x7f0c3d1d80f0 - codemap::FileMap::get_line::hbf104ad3bfda6f77Drd::v0.11.pre
   7:     0x7f0c3d1d4e90 - &lt;unknown&gt;
   8:     0x7f0c3d1ccd40 - diagnostic::EmitterWriter.Emitter::emit::h7c42f3840a82760aQcc::v0.11.pre
   9:     0x7f0c3d1c9f90 - diagnostic::Handler::emit::h971cc5635478154dV0b::v0.11.pre
  10:     0x7f0c3d1c8ec0 - diagnostic::SpanHandler::span_err::h3735f152282993cc3Sb::v0.11.pre
  11:     0x7f0c3eadda90 - middle::typeck::infer::InferCtxt&lt;'a&gt;::type_error_message_str_with_expected::he1b302cd7901cc2apJq::v0.11.pre
  12:     0x7f0c3eb7f0e0 - middle::typeck::infer::InferCtxt&lt;'a&gt;::type_error_message::h6e536a01d806a7af7Qq::v0.11.pre
  13:     0x7f0c3eb8d9f0 - &lt;unknown&gt;
  14:     0x7f0c3eb8b250 - &lt;unknown&gt;
  15:     0x7f0c3eb8d650 - &lt;unknown&gt;
  16:     0x7f0c3eb7fb20 - &lt;unknown&gt;
  17:     0x7f0c3eb7fb20 - &lt;unknown&gt;
  18:     0x7f0c3eb5fd00 - middle::typeck::check::check_block_with_expected::hec61a0d86b711c5ck7c::v0.11.pre
  19:     0x7f0c3eb5af90 - &lt;unknown&gt;
  20:     0x7f0c3eb5ad30 - &lt;unknown&gt;
  21:     0x7f0c3eb53790 - middle::typeck::check::check_item::he7c19452bac809220R8::v0.11.pre
  22:     0x7f0c3eb5ab30 - middle::typeck::check::check_item_types::hca38e25e2d3c1969ek8::v0.11.pre
  23:     0x7f0c3ec9d280 - &lt;unknown&gt;
  24:     0x7f0c3ec9c090 - middle::typeck::check_crate::h540b9b663571145fQgw::v0.11.pre
  25:     0x7f0c3f0e8e90 - driver::driver::phase_3_run_analysis_passes::h129732fc31300f8bbei::v0.11.pre
  26:     0x7f0c3f0eef10 - driver::driver::compile_input::h36b4d97be6c65511gEi::v0.11.pre
  27:     0x7f0c3f1143c0 - run_compiler::hd111892d49d8dfe1saq::v0.11.pre
  28:     0x7f0c3f12ffb0 - &lt;unknown&gt;
  29:     0x7f0c3f12e860 - &lt;unknown&gt;
  30:     0x7f0c3f129020 - &lt;unknown&gt;
  31:     0x7f0c3e2ce670 - &lt;unknown&gt;
  32:     0x7f0c3dd9f430 - &lt;unknown&gt;
  33:     0x7f0c3ddc04a0 - rust_try
  34:     0x7f0c3dd9f270 - rt::task::Task::run::hd2e6ec18f16de5eeiiD::v0.11.pre
  35:     0x7f0c3e2ce440 - &lt;unknown&gt;
  36:     0x7f0c3dda6c60 - &lt;unknown&gt;
  37:     0x7f0c3ba9c000 - start_thread
  38:     0x7f0c3d9e43d9 - clone
  39:                0x0 - &lt;unknown&gt;
</code></pre></div>
<p dir="auto">Version:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="$ rustc --version
rustc 0.11-pre (1001635 2014-05-10 09:56:34 -0700)
host: x86_64-unknown-linux-gnu"><pre class="notranslate"><code class="notranslate">$ rustc --version
rustc 0.11-pre (1001635 2014-05-10 09:56:34 -0700)
host: x86_64-unknown-linux-gnu
</code></pre></div>