un-closed delimiter causes compiler to crash.

[Arzte]

I ran this code:

// External Crate Imports
extern crate clap;
extern crate diesel;

// Distro enum import
use super::distro::{Distro, which_distro};

// Imports needed to run each command
use std::process::Command;
// Std Lib Imports
use std::process::exit;
use std::collections::HashSet;

use db;

// Gets what distro is being used from distro.rs
// then sets that as a function.

pub fn getWhichDistro() {
    let opt_dist = which_distro();
    if opt_dist.is_none() {
        println!("Your distribution is not supported");
        exit(0);
}

/// Installs packages for what ever Distro is returned
/// from which_distro();
///
/// #Examples
///
/// ```
/// let mut packages: HashSet<&str> = HashSet::new();
/// packages.push("sudo");
/// packages.push("postgresql");
/// void_install(packages);
/// ```
///
pub fn opt_distro_install(packages: HashSet<String>) {
    let opt_distro_packages = convert_to_opt_distro(packages);
    if !opt_distro_packages.is_empty() {
        pac(opt_distro_packages);
    }
}

/// Convert package names from other distros to void
fn convert_to_opt_distro(input_packages: HashSet<String>) -> HashSet<String> {
    let results = db::pack_query(input_packages);
    let mut pac_converted: HashSet<String> = HashSet::new();

    // Using the querys store into the HashSet the actual
    // void package name for use later
    for i in results {
        // All querys will either be a string or '' in the db
        // allowing us to use is_empty()
        if !i.opt_distro.is_empty() {
            pac_converted.insert(i.opt_distro);
        }
    }

    pac_converted
}

// Figures out the current package manager based on Distro

pub fn setFunctionVaribles() {
    if opt_distro().contains("Ubuntu") {
        let opt_pac_install = "apt-get";
        let opt_pac_install_args = "install";
        let opt_pac_refresh = "apt-get";
        let opt_pac_refresh_args = "update";
        let opt_pac_upgrade = "apt-get";
        let opt_pac_upgrade_args = "upgrade";
    } else if opt_distro().contains("Void") {
        let opt_pac_install = "xbps-install";
        let opt_pac_install_args = "-S";
        let opt_pac_refresh = "xbps-install";
        let opt_pac_refresh_args = "-Sy";
        let opt_pac_upgrade = "xbps-install";
        let opt_pac_upgrade_args = "-Syu";
    } else if opt_distro().contains("Debian") {
        let opt_pac_install = "apt-get";
        let opt_pac_install_args = "install";
        let opt_pac_refresh = "apt-get";
        let opt_pac_refresh_args = "update";
        let opt_pac_upgrade = "apt-get";
        let opt_pac_upgrade_args = "upgrade";
    } else if opt_distro().contains("Mint") {
        let opt_pac_install = "apt-get";
        let opt_pac_install_args = "install";
        let opt_pac_refresh = "apt-get";
        let opt_pac_refresh_args = "update";
        let opt_pac_upgrade = "apt-get";
        let opt_pac_upgrade_args = "upgrade";
    } else if opt_distro().contains("FreeBSD") {
        let opt_pac_install = "pkg";
        let opt_pac_install_args = "install";
        let opt_pac_refresh = "pkg";
        let opt_pac_refresh_args = "update";
        let opt_pac_upgrade = "pkg";
        let opt_pac_upgrade_args = "upgrade";
    }
}

// Package Manager specific functions

/// Calls the package manager program to install packages
///
/// #Examples
///
/// ```
/// let mut packages: HashSet<String> = HashSet::new();
/// packages.push("sudo".to_owned());
/// pac(packages);
/// ```
///
pub fn pac(mut packages: HashSet<String>) {
    let mut child = match Command::new(opt_pac_install)
        .arg(opt_pac_install_args)
        .args(packages.drain()
            .collect::<Vec<String>>()
            .as_slice())
        .spawn() {
        Ok(child) => child,
        Err(e) => panic!("Failed to execute child: {}", e),
    };
    let _unused = child.wait();
}

/// Calls the xbps-install program to refresh the package list
///
/// #Examples
///
/// ```
/// refresh_list();
/// ```
///
pub fn refresh_list() {
    let mut child = match Command::new(opt_pac_refresh)
        .arg(opt_pac_refresh_args)
        .spawn() {
        Ok(child) => child,
        Err(e) => panic!("Failed to execute child: {}", e),
    };
    let _unused = child.wait();
}

/// Calls the xbps-install program to upgrage all packages
///
/// #Examples
///
/// ```
/// refresh_list();
/// ```
///
pub fn upgrade_packages() {
    let mut child = match Command::new(opt_pac_upgrade)
        .arg(opt_pac_upgrade_args)
        .spawn() {
        Ok(child) => child,
        Err(e) => panic!("Failed to execute child: {}", e),
    };
    let _unused = child.wait();
}

I expected it to tell me whats wrong with the code.
Instead it crashed with a un-closed delimiter error.

Meta

rustc --version --verbose

rustc 1.10.0-nightly (d91f8ab0f 2016-05-07)
binary: rustc
commit-hash: d91f8ab0f58fa123857d96b9e151fc5185f5ff08
commit-date: 2016-05-07
host: x86_64-unknown-linux-gnu
release: 1.10.0-nightly

Backtrace:

   Compiling Alchemist v0.4.0 (file:///home/benjamin/git-projects/Alchemist)
src/alchemy/function.rs:163:3: 163:3 error: this file contains an un-closed delimiter
src/alchemy/function.rs:163:3: 163:3 error: this file contains an un-closed delimiter
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
note: run with `RUST_BACKTRACE=1` for a backtrace
thread 'rustc' panicked at 'no annotations resulted from: Line { line_index: 162, annotations: [Annotation { start_col: 2, end_col: 2, is_primary: true, label: None }] }', ../src/libsyntax/errors/snippet/mod.rs:495
stack backtrace:
   1:     0x7fdf604f8d20 - std::sys::backtrace::tracing::imp::write::h9fb600083204ae7f
   2:     0x7fdf6050656b - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hca543c34f11229ac
   3:     0x7fdf6050610c - std::panicking::default_hook::hc2c969e7453d080c
   4:     0x7fdf604cb8cf - std::sys_common::unwind::begin_unwind_inner::h30e12d15ce2b2e25
   5:     0x7fdf604cd9b8 - std::sys_common::unwind::begin_unwind_fmt::hb2de8a9968d38523
   6:     0x7fdf5bb3a3f0 - _<std..iter..FlatMap<I, U, F> as std..iter..Iterator>::next::h5f2bd9e6e7475c71
   7:     0x7fdf5bb2529d - syntax::errors::snippet::SnippetData::render_lines::hcf468c4f4b065b33
   8:     0x7fdf5bb1de5d - _<errors..emitter..EmitterWriter as errors..emitter..CoreEmitter>::emit_message::h90dab4fc68091626
   9:     0x7fdf5cdb581d - _<T as syntax..errors..emitter..Emitter>::emit_struct::h7b7bf4316e311f87
  10:     0x7fdf5bbfea79 - syntax::parse::parser::Parser::parse_token_tree::hd7887691a0224788
  11:     0x7fdf5bbecd8e - syntax::parse::parser::Parser::parse_all_token_trees::hd7d5e9405b2cb448
  12:     0x7fdf5bbedb06 - syntax::parse::filemap_to_tts::hef694d21976dabc3
  13:     0x7fdf5bbed222 - syntax::parse::filemap_to_parser::haaf76e155992a193
  14:     0x7fdf5bbed5a5 - syntax::parse::new_sub_parser_from_file::h958bfc7a4123d826
  15:     0x7fdf5bc66c0e - syntax::parse::parser::Parser::eval_src_mod::hc1b930270df2f2db
  16:     0x7fdf5bc46dfa - syntax::parse::parser::Parser::parse_item_::h42775dc76ed27882
  17:     0x7fdf5bbebea2 - syntax::parse::parser::Parser::parse_item::h10c52ea29e5c06b9
  18:     0x7fdf5bc64985 - syntax::parse::parser::Parser::parse_mod_items::h66337b460d5459b0
  19:     0x7fdf5bbea357 - syntax::parse::parser::Parser::parse_crate_mod::hab124b9c61eef337
  20:     0x7fdf5bbea0ee - syntax::parse::parse_crate_from_file::h9d8c63cd0dc10cd2
  21:     0x7fdf60a5ba7f - rustc_driver::driver::phase_1_parse_input::_$u7b$$u7b$closure$u7d$$u7d$::h356ebaf3d4ce86d0
  22:     0x7fdf60a36698 - rustc_driver::driver::phase_1_parse_input::h338b1890954f9a2c
  23:     0x7fdf60a11e97 - rustc_driver::driver::compile_input::h0629572e6f316b31
  24:     0x7fdf60a0857d - rustc_driver::run_compiler::h8902aebf8b1849a8
  25:     0x7fdf60a0583d - std::sys_common::unwind::try::try_fn::h4c74456035d0fcc7
  26:     0x7fdf604f64fb - __rust_try
  27:     0x7fdf604f648d - std::sys_common::unwind::inner_try::h47a4d9cd4a369dcd
  28:     0x7fdf60a0626a - _<F as std..boxed..FnBox<A>>::call_box::h27f542a39f1d61ef
  29:     0x7fdf605046d4 - std::sys::thread::Thread::new::thread_start::h6f266e069bf4ec2b
  30:     0x7fdf5829e3f3 - start_thread
                        at /builddir/glibc-2.23/nptl/pthread_create.c:333
  31:     0x7fdf60161bac - clone
                        at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
  32:                0x0 - <unknown>

Build failed, waiting for other jobs to finish...
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
note: run with `RUST_BACKTRACE=1` for a backtrace
thread 'rustc' panicked at 'no annotations resulted from: Line { line_index: 162, annotations: [Annotation { start_col: 2, end_col: 2, is_primary: true, label: None }] }', ../src/libsyntax/errors/snippet/mod.rs:495
stack backtrace:
   1:     0x7f1398831d20 - std::sys::backtrace::tracing::imp::write::h9fb600083204ae7f
   2:     0x7f139883f56b - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::hca543c34f11229ac
   3:     0x7f139883f10c - std::panicking::default_hook::hc2c969e7453d080c
   4:     0x7f13988048cf - std::sys_common::unwind::begin_unwind_inner::h30e12d15ce2b2e25
   5:     0x7f13988069b8 - std::sys_common::unwind::begin_unwind_fmt::hb2de8a9968d38523
   6:     0x7f1393e733f0 - _<std..iter..FlatMap<I, U, F> as std..iter..Iterator>::next::h5f2bd9e6e7475c71
   7:     0x7f1393e5e29d - syntax::errors::snippet::SnippetData::render_lines::hcf468c4f4b065b33
   8:     0x7f1393e56e5d - _<errors..emitter..EmitterWriter as errors..emitter..CoreEmitter>::emit_message::h90dab4fc68091626
   9:     0x7f13950ee81d - _<T as syntax..errors..emitter..Emitter>::emit_struct::h7b7bf4316e311f87
  10:     0x7f1393f37a79 - syntax::parse::parser::Parser::parse_token_tree::hd7887691a0224788
  11:     0x7f1393f25d8e - syntax::parse::parser::Parser::parse_all_token_trees::hd7d5e9405b2cb448
  12:     0x7f1393f26b06 - syntax::parse::filemap_to_tts::hef694d21976dabc3
  13:     0x7f1393f26222 - syntax::parse::filemap_to_parser::haaf76e155992a193
  14:     0x7f1393f265a5 - syntax::parse::new_sub_parser_from_file::h958bfc7a4123d826
  15:     0x7f1393f9fc0e - syntax::parse::parser::Parser::eval_src_mod::hc1b930270df2f2db
  16:     0x7f1393f7fdfa - syntax::parse::parser::Parser::parse_item_::h42775dc76ed27882
  17:     0x7f1393f24ea2 - syntax::parse::parser::Parser::parse_item::h10c52ea29e5c06b9
  18:     0x7f1393f9d985 - syntax::parse::parser::Parser::parse_mod_items::h66337b460d5459b0
  19:     0x7f1393f23357 - syntax::parse::parser::Parser::parse_crate_mod::hab124b9c61eef337
  20:     0x7f1393f230ee - syntax::parse::parse_crate_from_file::h9d8c63cd0dc10cd2
  21:     0x7f1398d94a7f - rustc_driver::driver::phase_1_parse_input::_$u7b$$u7b$closure$u7d$$u7d$::h356ebaf3d4ce86d0
  22:     0x7f1398d6f698 - rustc_driver::driver::phase_1_parse_input::h338b1890954f9a2c
  23:     0x7f1398d4ae97 - rustc_driver::driver::compile_input::h0629572e6f316b31
  24:     0x7f1398d4157d - rustc_driver::run_compiler::h8902aebf8b1849a8
  25:     0x7f1398d3e83d - std::sys_common::unwind::try::try_fn::h4c74456035d0fcc7
  26:     0x7f139882f4fb - __rust_try
  27:     0x7f139882f48d - std::sys_common::unwind::inner_try::h47a4d9cd4a369dcd
  28:     0x7f1398d3f26a - _<F as std..boxed..FnBox<A>>::call_box::h27f542a39f1d61ef
  29:     0x7f139883d6d4 - std::sys::thread::Thread::new::thread_start::h6f266e069bf4ec2b
  30:     0x7f13905d73f3 - start_thread
                        at /builddir/glibc-2.23/nptl/pthread_create.c:333
  31:     0x7f139849abac - clone
                        at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
  32:                0x0 - <unknown>

error: Could not compile `Alchemist`.

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

[TimNN]

This seems to have been fixed on the latest nightly.

[TimNN]

More specifically, this was probably fixed by #33369.

[alexcrichton]

Yay!

[Arzte]

Cool!