<p dir="auto">Compiling the following <code class="notranslate">main.rs</code> with <code class="notranslate">rustc</code> <a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/rust-lang/rust/commit/d877e6540431d99b0945a3d27eeb466b0d693902/hovercard" href="https://github.com/rust-lang/rust/commit/d877e6540431d99b0945a3d27eeb466b0d693902"><tt>d877e65</tt></a> (driven by <a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/rust-lang/cargo/commit/1b902d4/hovercard" href="https://github.com/rust-lang/cargo/commit/1b902d4">rust-lang/cargo@<tt>1b902d4</tt></a>):</p>
<div class="highlight highlight-source-rust notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="#![feature(plugin)]
#![plugin(docopt_macros)]

docopt!(Args, &quot;
Usage: foo (--help | --version)

Options:
    -h, --help     Show this message
    --version      Show the version of foo
&quot;);"><pre class="notranslate"><span class="pl-c1">#!<span class="pl-kos">[</span>feature<span class="pl-kos">(</span>plugin<span class="pl-kos">)</span><span class="pl-kos">]</span></span>
<span class="pl-c1">#!<span class="pl-kos">[</span>plugin<span class="pl-kos">(</span>docopt_macros<span class="pl-kos">)</span><span class="pl-kos">]</span></span>

<span class="pl-en">docopt</span><span class="pl-en">!</span><span class="pl-kos">(</span><span class="pl-v">Args</span>, <span class="pl-s">"</span>
<span class="pl-s">Usage: foo (--help | --version)</span>
<span class="pl-s"></span>
<span class="pl-s">Options:</span>
<span class="pl-s">    -h, --help     Show this message</span>
<span class="pl-s">    --version      Show the version of foo</span>
<span class="pl-s">"</span><span class="pl-kos">)</span><span class="pl-kos">;</span></pre></div>
<p dir="auto">I get the following error and backtrace:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="       Fresh rustc-serialize v0.3.16
       Fresh libc v0.1.10
       Fresh byteorder v0.3.11
       Fresh strsim v0.3.0
       Fresh regex-syntax v0.2.1
       Fresh pcap v0.3.2
       Fresh memchr v0.1.5
       Fresh aho-corasick v0.3.0
       Fresh regex v0.1.41
       Fresh docopt v0.6.70
   Compiling rshark v0.0.1 (file:///Volumes/Dev/rust/rusty-shark)
     Running `rustc src/main.rs --crate-name rshark --crate-type bin -g --out-dir /Volumes/Dev/rust/rusty-shark/target/debug --emit=dep-info,link -L dependency=/Volumes/Dev/rust/rusty-shark/target/debug -L dependency=/Volumes/Dev/rust/rusty-shark/target/debug/deps --extern rustc_serialize=/Volumes/Dev/rust/rusty-shark/target/debug/deps/librustc_serialize-7ff5bfc027146194.rlib --extern byteorder=/Volumes/Dev/rust/rusty-shark/target/debug/deps/libbyteorder-4fce7f4e6a3a7971.rlib --extern docopt_macros=/Volumes/Dev/rust/rusty-shark/target/debug/deps/libdocopt_macros-a6de226da2d2dbee.dylib --extern docopt=/Volumes/Dev/rust/rusty-shark/target/debug/deps/libdocopt-faaff1fb4e49b8d3.rlib --extern pcap=/Volumes/Dev/rust/rusty-shark/target/debug/deps/libpcap-a15489e5f8e0ae99.rlib --extern rshark=/Volumes/Dev/rust/rusty-shark/target/debug/librshark.rlib`
       Fresh docopt_macros v0.6.70
thread 'rustc' panicked at 'index out of bounds: the len is 60 but the index is 65', src/libcollections/vec.rs:1261

stack backtrace:
   1:        0x10892ad95 - sys::backtrace::write::hb66fe514ff57da79Yws
   2:        0x108933e9e - panicking::on_panic::h1391145d0b989950GXw
   3:        0x1088ed882 - rt::unwind::begin_unwind_inner::hb494f9df36a862c1RFw
   4:        0x1088ee75c - rt::unwind::begin_unwind_fmt::h52e6b4971e042d46XEw
   5:        0x108933a1c - rust_begin_unwind
   6:        0x1089853f5 - panicking::panic_fmt::hd75b6cee85f3afe4SgC
   7:        0x10897fb35 - panicking::panic_bounds_check::h75be7bf05a80539eYfC
   8:        0x10e1450f5 - parse::token::InternedString::new_from_name::h8111e5682fc45ad3FkT
   9:        0x10e20bf18 - parse::parser::Parser&lt;'a&gt;::lit_from_token::h0d07f04eeabf23bchNG
  10:        0x10e210757 - parse::parser::Parser&lt;'a&gt;::parse_lit::haa0eebf06d59b0d9lRG
  11:        0x10e2166f0 - parse::parser::Parser&lt;'a&gt;::parse_bottom_expr::h7495fdc246becf10smH
  12:        0x10e21c172 - parse::parser::Parser&lt;'a&gt;::parse_dot_or_call_expr::hf83bae54e6ee28e41PH
  13:        0x10e220253 - parse::parser::Parser&lt;'a&gt;::parse_prefix_expr::h6dcba969e9fcdfa6ejI
  14:        0x10e2210e2 - parse::parser::Parser&lt;'a&gt;::parse_binops::ha6fcf1d22eba030e5tI
  15:        0x10e221b0b - parse::parser::Parser&lt;'a&gt;::parse_assign_expr::h1237d11d5bcb411eXzI
  16:        0x10e1ef991 - parse::parser::Parser&lt;'a&gt;::parse_expr::hf4118a56a6da097cc6E
  17:        0x10d2b05df - MacParser&lt;'a, 'b&gt;::parse_str::hdb359ba5b83664ee8ra
  18:        0x10d232aa7 - MacParser&lt;'a, 'b&gt;::parse::h134ebf17f8af49ccuoa
  19:        0x10d2325c2 - expand::hb4b7305ba726be863aa
  20:        0x10dbc3d0e - ext::base::F.TTMacroExpander::expand::h15442948462285585430
  21:        0x10674e06a - ext::expand::expand_item_mac::h70316ca4f5b12b7dYRb
  22:        0x10673d820 - ext::expand::expand_annotatable::h670bc4d68c7340e44lc
  23:        0x106739e0d - ext::expand::expand_item::h1d57b59c88ed776dWOb
  24:        0x1067463eb - fold::noop_fold_mod::closure.66426
  25:        0x10674606c - iter::FlatMap&lt;I, U, F&gt;.Iterator::next::h7787021719063519280
  26:        0x106745ab5 - vec::Vec&lt;T&gt;.FromIterator&lt;T&gt;::from_iter::h8769822404114346174
  27:        0x106745845 - fold::Folder::fold_mod::h12688539743151791588
  28:        0x106740ad8 - ext::expand::expand_item_underscore::ha6887def1d44464dxPb
  29:        0x106793772 - fold::noop_fold_item_simple::h12171689993025331003
  30:        0x1067932f6 - fold::noop_fold_item::h236170770538799404
  31:        0x10673ec75 - ext::expand::expand_annotatable::h670bc4d68c7340e44lc
  32:        0x106739e0d - ext::expand::expand_item::h1d57b59c88ed776dWOb
  33:        0x10679ad8f - ext::expand::expand_crate::h1cdd399411e3b25bUNc
  34:        0x105198815 - driver::phase_2_configure_and_expand::closure.22401
  35:        0x10514b5e3 - driver::phase_2_configure_and_expand::h2b5eb3aac7e23d4cita
  36:        0x10513c0c5 - driver::compile_input::h6ff6de4909e0ced5Tba
  37:        0x105220210 - run_compiler::h855428a6f31812ebA7b
  38:        0x10521dca0 - boxed::F.FnBox&lt;A&gt;::call_box::h1402838733596026107
  39:        0x10521d517 - rt::unwind::try::try_fn::h10520533051806862779
  40:        0x10893394f - __rust_try_inner
  41:        0x10893398a - __rust_try
  42:        0x10891d305 - rt::unwind::try::inner_try::hfce8c2a882970c4aKBw
  43:        0x10521d759 - boxed::F.FnBox&lt;A&gt;::call_box::h4757993596228899159
  44:        0x10893292d - sys::thread::Thread::new::thread_start::h477ee10709502668l0v
  45:     0x7fff94b9f267 - _pthread_body
  46:     0x7fff94b9f1e4 - _pthread_start"><pre class="notranslate"><code class="notranslate">       Fresh rustc-serialize v0.3.16
       Fresh libc v0.1.10
       Fresh byteorder v0.3.11
       Fresh strsim v0.3.0
       Fresh regex-syntax v0.2.1
       Fresh pcap v0.3.2
       Fresh memchr v0.1.5
       Fresh aho-corasick v0.3.0
       Fresh regex v0.1.41
       Fresh docopt v0.6.70
   Compiling rshark v0.0.1 (file:///Volumes/Dev/rust/rusty-shark)
     Running `rustc src/main.rs --crate-name rshark --crate-type bin -g --out-dir /Volumes/Dev/rust/rusty-shark/target/debug --emit=dep-info,link -L dependency=/Volumes/Dev/rust/rusty-shark/target/debug -L dependency=/Volumes/Dev/rust/rusty-shark/target/debug/deps --extern rustc_serialize=/Volumes/Dev/rust/rusty-shark/target/debug/deps/librustc_serialize-7ff5bfc027146194.rlib --extern byteorder=/Volumes/Dev/rust/rusty-shark/target/debug/deps/libbyteorder-4fce7f4e6a3a7971.rlib --extern docopt_macros=/Volumes/Dev/rust/rusty-shark/target/debug/deps/libdocopt_macros-a6de226da2d2dbee.dylib --extern docopt=/Volumes/Dev/rust/rusty-shark/target/debug/deps/libdocopt-faaff1fb4e49b8d3.rlib --extern pcap=/Volumes/Dev/rust/rusty-shark/target/debug/deps/libpcap-a15489e5f8e0ae99.rlib --extern rshark=/Volumes/Dev/rust/rusty-shark/target/debug/librshark.rlib`
       Fresh docopt_macros v0.6.70
thread 'rustc' panicked at 'index out of bounds: the len is 60 but the index is 65', src/libcollections/vec.rs:1261

stack backtrace:
   1:        0x10892ad95 - sys::backtrace::write::hb66fe514ff57da79Yws
   2:        0x108933e9e - panicking::on_panic::h1391145d0b989950GXw
   3:        0x1088ed882 - rt::unwind::begin_unwind_inner::hb494f9df36a862c1RFw
   4:        0x1088ee75c - rt::unwind::begin_unwind_fmt::h52e6b4971e042d46XEw
   5:        0x108933a1c - rust_begin_unwind
   6:        0x1089853f5 - panicking::panic_fmt::hd75b6cee85f3afe4SgC
   7:        0x10897fb35 - panicking::panic_bounds_check::h75be7bf05a80539eYfC
   8:        0x10e1450f5 - parse::token::InternedString::new_from_name::h8111e5682fc45ad3FkT
   9:        0x10e20bf18 - parse::parser::Parser&lt;'a&gt;::lit_from_token::h0d07f04eeabf23bchNG
  10:        0x10e210757 - parse::parser::Parser&lt;'a&gt;::parse_lit::haa0eebf06d59b0d9lRG
  11:        0x10e2166f0 - parse::parser::Parser&lt;'a&gt;::parse_bottom_expr::h7495fdc246becf10smH
  12:        0x10e21c172 - parse::parser::Parser&lt;'a&gt;::parse_dot_or_call_expr::hf83bae54e6ee28e41PH
  13:        0x10e220253 - parse::parser::Parser&lt;'a&gt;::parse_prefix_expr::h6dcba969e9fcdfa6ejI
  14:        0x10e2210e2 - parse::parser::Parser&lt;'a&gt;::parse_binops::ha6fcf1d22eba030e5tI
  15:        0x10e221b0b - parse::parser::Parser&lt;'a&gt;::parse_assign_expr::h1237d11d5bcb411eXzI
  16:        0x10e1ef991 - parse::parser::Parser&lt;'a&gt;::parse_expr::hf4118a56a6da097cc6E
  17:        0x10d2b05df - MacParser&lt;'a, 'b&gt;::parse_str::hdb359ba5b83664ee8ra
  18:        0x10d232aa7 - MacParser&lt;'a, 'b&gt;::parse::h134ebf17f8af49ccuoa
  19:        0x10d2325c2 - expand::hb4b7305ba726be863aa
  20:        0x10dbc3d0e - ext::base::F.TTMacroExpander::expand::h15442948462285585430
  21:        0x10674e06a - ext::expand::expand_item_mac::h70316ca4f5b12b7dYRb
  22:        0x10673d820 - ext::expand::expand_annotatable::h670bc4d68c7340e44lc
  23:        0x106739e0d - ext::expand::expand_item::h1d57b59c88ed776dWOb
  24:        0x1067463eb - fold::noop_fold_mod::closure.66426
  25:        0x10674606c - iter::FlatMap&lt;I, U, F&gt;.Iterator::next::h7787021719063519280
  26:        0x106745ab5 - vec::Vec&lt;T&gt;.FromIterator&lt;T&gt;::from_iter::h8769822404114346174
  27:        0x106745845 - fold::Folder::fold_mod::h12688539743151791588
  28:        0x106740ad8 - ext::expand::expand_item_underscore::ha6887def1d44464dxPb
  29:        0x106793772 - fold::noop_fold_item_simple::h12171689993025331003
  30:        0x1067932f6 - fold::noop_fold_item::h236170770538799404
  31:        0x10673ec75 - ext::expand::expand_annotatable::h670bc4d68c7340e44lc
  32:        0x106739e0d - ext::expand::expand_item::h1d57b59c88ed776dWOb
  33:        0x10679ad8f - ext::expand::expand_crate::h1cdd399411e3b25bUNc
  34:        0x105198815 - driver::phase_2_configure_and_expand::closure.22401
  35:        0x10514b5e3 - driver::phase_2_configure_and_expand::h2b5eb3aac7e23d4cita
  36:        0x10513c0c5 - driver::compile_input::h6ff6de4909e0ced5Tba
  37:        0x105220210 - run_compiler::h855428a6f31812ebA7b
  38:        0x10521dca0 - boxed::F.FnBox&lt;A&gt;::call_box::h1402838733596026107
  39:        0x10521d517 - rt::unwind::try::try_fn::h10520533051806862779
  40:        0x10893394f - __rust_try_inner
  41:        0x10893398a - __rust_try
  42:        0x10891d305 - rt::unwind::try::inner_try::hfce8c2a882970c4aKBw
  43:        0x10521d759 - boxed::F.FnBox&lt;A&gt;::call_box::h4757993596228899159
  44:        0x10893292d - sys::thread::Thread::new::thread_start::h477ee10709502668l0v
  45:     0x7fff94b9f267 - _pthread_body
  46:     0x7fff94b9f1e4 - _pthread_start
</code></pre></div>
<p dir="auto">This might be a duplicate of one of the "me too" reports on <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="70953269" data-permission-text="Title is private" data-url="https://github.com/rust-lang/rust/issues/24819" data-hovercard-type="issue" data-hovercard-url="/rust-lang/rust/issues/24819/hovercard" href="https://github.com/rust-lang/rust/issues/24819">#24819</a>, but I don't think it's a duplicate of originally-reported issue.</p>
<p dir="auto">the error reproduced <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="53978816" data-permission-text="Title is private" data-url="https://github.com/rust-lang/rust/issues/20913" data-hovercard-type="issue" data-hovercard-url="/rust-lang/rust/issues/20913/hovercard" href="https://github.com/rust-lang/rust/issues/20913">#20913</a></p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="#![feature(plugin)]
#![plugin(regex_macros)]

extern crate regex;

static R : regex::Regex = regex!(r&quot;.+&quot;);

fn main() {
    println!(&quot;Hello, world!&quot;);
}"><pre class="notranslate"><code class="notranslate">#![feature(plugin)]
#![plugin(regex_macros)]

extern crate regex;

static R : regex::Regex = regex!(r".+");

fn main() {
    println!("Hello, world!");
}
</code></pre></div>
<p dir="auto">Cargo.toml</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="[package]
name = &quot;hello_world&quot;
version = &quot;0.0.1&quot;
authors = [ &quot;Your name &lt;you@example.com&gt;&quot; ]
[dependencies]
regex = &quot;0.1.41&quot;
regex_macros = &quot;0.1.21&quot;
'''

'''
RUST_BACKTRACE=1 cargo build
   Compiling regex-syntax v0.2.1
   Compiling libc v0.1.8
   Compiling memchr v0.1.3
   Compiling aho-corasick v0.3.0
   Compiling regex v0.1.41
   Compiling regex_macros v0.1.21
   Compiling hello_world v0.0.1 (file:///Users/edwin/Desktop/outofround)
error: internal compiler error: unexpected panic
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 'index out of bounds: the len is 60 but the index is 66', ../src/libcollections/vec.rs:1040

stack backtrace:
   1:        0x103ef0f50 - sys::backtrace::write::h06479201c280533dX8r
   2:        0x103ef8ff1 - panicking::on_panic::h708366cd9af58c5eeLw
   3:        0x103ebcd42 - rt::unwind::begin_unwind_inner::h3d24f7ebda310c3ergw
   4:        0x103ebdad7 - rt::unwind::begin_unwind_fmt::h390e14ebe566c38cxfw
   5:        0x103ef8be7 - rust_begin_unwind
   6:        0x103f3c790 - panicking::panic_fmt::h4d9c502ae8b21c5c41D
   7:        0x103f36890 - panicking::panic_bounds_check::h541f99073d46b27fa1D
   8:        0x108cd55e0 - parse::token::InternedString::new_from_name::h2118f79f5b2c5ff47uT
   9:        0x108d9401c - parse::parser::Parser&lt;'a&gt;::lit_from_token::h5e63eff71b0f496cBXG
  10:        0x108d98674 - parse::parser::Parser&lt;'a&gt;::parse_lit::h523e95e14437ffebF1G
  11:        0x108d9eba8 - parse::parser::Parser&lt;'a&gt;::parse_bottom_expr::h7354ec39bb561768MwH
  12:        0x108da2d4d - parse::parser::Parser&lt;'a&gt;::parse_dot_or_call_expr::h9bd3d87b8df34dbbl0H
  13:        0x108da70ff - parse::parser::Parser&lt;'a&gt;::parse_prefix_expr::h866df018931bf521ytI
  14:        0x108da808d - parse::parser::Parser&lt;'a&gt;::parse_binops::h2cda77ab17aa15f5pEI
  15:        0x108da8a8e - parse::parser::Parser&lt;'a&gt;::parse_assign_expr::h8c7c5e5fe0c2ab9ehKI
  16:        0x108d75e7c - parse::parser::Parser&lt;'a&gt;::parse_expr::hd848c168e2afac06feF
  17:        0x1081120b5 - parse::hdcfa6cf9ed309efdpfe
  18:        0x10811187c - native::h07acbd776b19d433Oaa
  19:        0x10874f699 - ext::base::F.TTMacroExpander::expand::h8908149877291271609
  20:        0x101915613 - ext::expand::expand_expr::closure.67387
  21:        0x10190f4a5 - ext::expand::expand_expr::h7b5890896e16ac04xub
  22:        0x101926994 - ext::expand::expand_item_underscore::h1f92daaaefce98b920b
  23:        0x10197b5aa - fold::noop_fold_item_simple::h16842886341315843757
  24:        0x10197b139 - fold::noop_fold_item::h15896533011605023666
  25:        0x1019242e7 - ext::expand::expand_annotatable::h5ce15f3070d97e0bzxc
  26:        0x10191fc5c - ext::expand::expand_item::he31229fb52bb2447r0b
  27:        0x10192c715 - iter::FlatMap&lt;I, U, F&gt;.Iterator::next::h2562911406533808273
  28:        0x10192c24c - vec::Vec&lt;T&gt;.FromIterator&lt;T&gt;::from_iter::h8778905134923064386
  29:        0x10192bf7a - fold::noop_fold_mod::h8378389276969869859
  30:        0x101926d47 - ext::expand::expand_item_underscore::h1f92daaaefce98b920b
  31:        0x10197b5aa - fold::noop_fold_item_simple::h16842886341315843757
  32:        0x10197b139 - fold::noop_fold_item::h15896533011605023666
  33:        0x101924f1d - ext::expand::expand_annotatable::h5ce15f3070d97e0bzxc
  34:        0x10191fc5c - ext::expand::expand_item::he31229fb52bb2447r0b
  35:        0x101985690 - ext::expand::expand_crate::h6e83998778bd1651q1c
  36:        0x100402783 - driver::phase_2_configure_and_expand::closure.26008
  37:        0x1003b83c0 - driver::phase_2_configure_and_expand::h437db8579a2dc2e5ita
  38:        0x1003a8fcb - driver::compile_input::hd814df6f8348abfeTba
  39:        0x100487a4e - run_compiler::h283a07bbfde37a6dC7b
  40:        0x10048563b - boxed::F.FnBox&lt;A&gt;::call_box::h14577586819962330318
  41:        0x100484f92 - rt::unwind::try::try_fn::h5552038356682966148
  42:        0x103ef8b98 - __rust_try
  43:        0x103ee52f0 - rt::unwind::try::inner_try::h315b50009a67cb2ckcw
  44:        0x100485152 - boxed::F.FnBox&lt;A&gt;::call_box::h14301902851584304785
  45:        0x103ef7e4d - sys::thread::Thread::new::thread_start::h179ff9c79ff58b662Av
  46:     0x7fff9acba059 - _pthread_body
  47:     0x7fff9acb9fd6 - _pthread_start

Could not compile `hello_world`.

To learn more, run the command again with --verbose."><pre class="notranslate"><code class="notranslate">[package]
name = "hello_world"
version = "0.0.1"
authors = [ "Your name &lt;you@example.com&gt;" ]
[dependencies]
regex = "0.1.41"
regex_macros = "0.1.21"
'''

'''
RUST_BACKTRACE=1 cargo build
   Compiling regex-syntax v0.2.1
   Compiling libc v0.1.8
   Compiling memchr v0.1.3
   Compiling aho-corasick v0.3.0
   Compiling regex v0.1.41
   Compiling regex_macros v0.1.21
   Compiling hello_world v0.0.1 (file:///Users/edwin/Desktop/outofround)
error: internal compiler error: unexpected panic
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 'index out of bounds: the len is 60 but the index is 66', ../src/libcollections/vec.rs:1040

stack backtrace:
   1:        0x103ef0f50 - sys::backtrace::write::h06479201c280533dX8r
   2:        0x103ef8ff1 - panicking::on_panic::h708366cd9af58c5eeLw
   3:        0x103ebcd42 - rt::unwind::begin_unwind_inner::h3d24f7ebda310c3ergw
   4:        0x103ebdad7 - rt::unwind::begin_unwind_fmt::h390e14ebe566c38cxfw
   5:        0x103ef8be7 - rust_begin_unwind
   6:        0x103f3c790 - panicking::panic_fmt::h4d9c502ae8b21c5c41D
   7:        0x103f36890 - panicking::panic_bounds_check::h541f99073d46b27fa1D
   8:        0x108cd55e0 - parse::token::InternedString::new_from_name::h2118f79f5b2c5ff47uT
   9:        0x108d9401c - parse::parser::Parser&lt;'a&gt;::lit_from_token::h5e63eff71b0f496cBXG
  10:        0x108d98674 - parse::parser::Parser&lt;'a&gt;::parse_lit::h523e95e14437ffebF1G
  11:        0x108d9eba8 - parse::parser::Parser&lt;'a&gt;::parse_bottom_expr::h7354ec39bb561768MwH
  12:        0x108da2d4d - parse::parser::Parser&lt;'a&gt;::parse_dot_or_call_expr::h9bd3d87b8df34dbbl0H
  13:        0x108da70ff - parse::parser::Parser&lt;'a&gt;::parse_prefix_expr::h866df018931bf521ytI
  14:        0x108da808d - parse::parser::Parser&lt;'a&gt;::parse_binops::h2cda77ab17aa15f5pEI
  15:        0x108da8a8e - parse::parser::Parser&lt;'a&gt;::parse_assign_expr::h8c7c5e5fe0c2ab9ehKI
  16:        0x108d75e7c - parse::parser::Parser&lt;'a&gt;::parse_expr::hd848c168e2afac06feF
  17:        0x1081120b5 - parse::hdcfa6cf9ed309efdpfe
  18:        0x10811187c - native::h07acbd776b19d433Oaa
  19:        0x10874f699 - ext::base::F.TTMacroExpander::expand::h8908149877291271609
  20:        0x101915613 - ext::expand::expand_expr::closure.67387
  21:        0x10190f4a5 - ext::expand::expand_expr::h7b5890896e16ac04xub
  22:        0x101926994 - ext::expand::expand_item_underscore::h1f92daaaefce98b920b
  23:        0x10197b5aa - fold::noop_fold_item_simple::h16842886341315843757
  24:        0x10197b139 - fold::noop_fold_item::h15896533011605023666
  25:        0x1019242e7 - ext::expand::expand_annotatable::h5ce15f3070d97e0bzxc
  26:        0x10191fc5c - ext::expand::expand_item::he31229fb52bb2447r0b
  27:        0x10192c715 - iter::FlatMap&lt;I, U, F&gt;.Iterator::next::h2562911406533808273
  28:        0x10192c24c - vec::Vec&lt;T&gt;.FromIterator&lt;T&gt;::from_iter::h8778905134923064386
  29:        0x10192bf7a - fold::noop_fold_mod::h8378389276969869859
  30:        0x101926d47 - ext::expand::expand_item_underscore::h1f92daaaefce98b920b
  31:        0x10197b5aa - fold::noop_fold_item_simple::h16842886341315843757
  32:        0x10197b139 - fold::noop_fold_item::h15896533011605023666
  33:        0x101924f1d - ext::expand::expand_annotatable::h5ce15f3070d97e0bzxc
  34:        0x10191fc5c - ext::expand::expand_item::he31229fb52bb2447r0b
  35:        0x101985690 - ext::expand::expand_crate::h6e83998778bd1651q1c
  36:        0x100402783 - driver::phase_2_configure_and_expand::closure.26008
  37:        0x1003b83c0 - driver::phase_2_configure_and_expand::h437db8579a2dc2e5ita
  38:        0x1003a8fcb - driver::compile_input::hd814df6f8348abfeTba
  39:        0x100487a4e - run_compiler::h283a07bbfde37a6dC7b
  40:        0x10048563b - boxed::F.FnBox&lt;A&gt;::call_box::h14577586819962330318
  41:        0x100484f92 - rt::unwind::try::try_fn::h5552038356682966148
  42:        0x103ef8b98 - __rust_try
  43:        0x103ee52f0 - rt::unwind::try::inner_try::h315b50009a67cb2ckcw
  44:        0x100485152 - boxed::F.FnBox&lt;A&gt;::call_box::h14301902851584304785
  45:        0x103ef7e4d - sys::thread::Thread::new::thread_start::h179ff9c79ff58b662Av
  46:     0x7fff9acba059 - _pthread_body
  47:     0x7fff9acb9fd6 - _pthread_start

Could not compile `hello_world`.

To learn more, run the command again with --verbose.
</code></pre></div>