Dec 01 06:31:30.167 INFO testing patallen/SlangVM against 1.30.1 for beta-1.31-5
Dec 01 06:31:30.168 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 06:31:30.562 INFO [stdout] a6a5bc415c728c5ec4971b0d3e7a49d4563e9935bf32596d10675807bafe1903
Dec 01 06:31:30.566 INFO running `"docker" "start" "-a" "a6a5bc415c728c5ec4971b0d3e7a49d4563e9935bf32596d10675807bafe1903"`
Dec 01 06:31:31.733 INFO [stderr] usermod: no changes
Dec 01 06:31:31.904 INFO [stderr]    Compiling serde v1.0.4
Dec 01 06:31:31.907 INFO [stderr]    Compiling miniz-sys v0.1.9
Dec 01 06:31:31.907 INFO [stderr]    Compiling humantime v1.0.0
Dec 01 06:31:31.907 INFO [stderr]    Compiling ordered-float v0.4.0
Dec 01 06:31:31.907 INFO [stderr]    Compiling chrono v0.3.1
Dec 01 06:31:31.907 INFO [stderr]    Compiling serde_derive v1.0.4
Dec 01 06:31:38.279 INFO [stderr]    Compiling flate2 v0.2.19
Dec 01 06:31:51.407 INFO [stderr]    Compiling serde_yaml v0.7.0
Dec 01 06:31:51.407 INFO [stderr]    Compiling serde_json v1.0.2
Dec 01 06:31:51.407 INFO [stderr]    Compiling serde-value v0.5.0
Dec 01 06:31:58.855 INFO [stderr]    Compiling log4rs v0.7.0
Dec 01 06:32:08.775 INFO [stderr]    Compiling slang v0.1.0 (/source)
Dec 01 06:32:10.923 INFO [stderr] warning: unused import: `assembler::lexer::Lexer`
Dec 01 06:32:10.924 INFO [stderr]   --> src/main.rs:23:5
Dec 01 06:32:10.924 INFO [stderr]    |
Dec 01 06:32:10.925 INFO [stderr] 23 | use assembler::lexer::Lexer;
Dec 01 06:32:10.925 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:10.925 INFO [stderr]    |
Dec 01 06:32:10.925 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 01 06:32:10.926 INFO [stderr] 
Dec 01 06:32:10.926 INFO [stderr] warning: unused imports: `Tokenizer`, `shunting_yard`
Dec 01 06:32:10.926 INFO [stderr]   --> src/main.rs:24:21
Dec 01 06:32:10.927 INFO [stderr]    |
Dec 01 06:32:10.927 INFO [stderr] 24 | use compiler::lex::{Tokenizer, shunting_yard};
Dec 01 06:32:10.927 INFO [stderr]    |                     ^^^^^^^^^  ^^^^^^^^^^^^^
Dec 01 06:32:10.928 INFO [stderr] 
Dec 01 06:32:11.279 INFO [stderr] warning: method is never used: `next_code`
Dec 01 06:32:11.279 INFO [stderr]   --> src/program.rs:28:5
Dec 01 06:32:11.279 INFO [stderr]    |
Dec 01 06:32:11.279 INFO [stderr] 28 |     pub fn next_code(&mut self) -> u16 {
Dec 01 06:32:11.279 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.279 INFO [stderr]    |
Dec 01 06:32:11.279 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 01 06:32:11.279 INFO [stderr] 
Dec 01 06:32:11.279 INFO [stderr] warning: method is never used: `reset`
Dec 01 06:32:11.279 INFO [stderr]   --> src/program.rs:41:5
Dec 01 06:32:11.279 INFO [stderr]    |
Dec 01 06:32:11.279 INFO [stderr] 41 |     pub fn reset(&mut self) {
Dec 01 06:32:11.279 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.279 INFO [stderr] 
Dec 01 06:32:11.279 INFO [stderr] warning: enum is never used: `Token`
Dec 01 06:32:11.279 INFO [stderr]  --> src/compiler/lex.rs:7:1
Dec 01 06:32:11.279 INFO [stderr]   |
Dec 01 06:32:11.279 INFO [stderr] 7 | pub enum Token {
Dec 01 06:32:11.279 INFO [stderr]   | ^^^^^^^^^^^^^^
Dec 01 06:32:11.279 INFO [stderr] 
Dec 01 06:32:11.279 INFO [stderr] warning: enum is never used: `ConsumeType`
Dec 01 06:32:11.279 INFO [stderr]   --> src/compiler/lex.rs:15:1
Dec 01 06:32:11.279 INFO [stderr]    |
Dec 01 06:32:11.279 INFO [stderr] 15 | enum ConsumeType { Ident, Number }
Dec 01 06:32:11.279 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 01 06:32:11.279 INFO [stderr] 
Dec 01 06:32:11.279 INFO [stderr] warning: struct is never constructed: `Tokenizer`
Dec 01 06:32:11.279 INFO [stderr]   --> src/compiler/lex.rs:17:1
Dec 01 06:32:11.279 INFO [stderr]    |
Dec 01 06:32:11.279 INFO [stderr] 17 | pub struct Tokenizer<'a> {
Dec 01 06:32:11.279 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.279 INFO [stderr] 
Dec 01 06:32:11.279 INFO [stderr] warning: method is never used: `new`
Dec 01 06:32:11.279 INFO [stderr]   --> src/compiler/lex.rs:21:5
Dec 01 06:32:11.279 INFO [stderr]    |
Dec 01 06:32:11.279 INFO [stderr] 21 |     pub fn new(input: &'a str) -> Self {
Dec 01 06:32:11.279 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.279 INFO [stderr] 
Dec 01 06:32:11.279 INFO [stderr] warning: method is never used: `tokenize`
Dec 01 06:32:11.279 INFO [stderr]   --> src/compiler/lex.rs:26:5
Dec 01 06:32:11.279 INFO [stderr]    |
Dec 01 06:32:11.279 INFO [stderr] 26 |     pub fn tokenize(&mut self) -> Vec<Token> {
Dec 01 06:32:11.280 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.280 INFO [stderr] 
Dec 01 06:32:11.280 INFO [stderr] warning: function is never used: `consume_ident`
Dec 01 06:32:11.280 INFO [stderr]   --> src/compiler/lex.rs:48:1
Dec 01 06:32:11.280 INFO [stderr]    |
Dec 01 06:32:11.280 INFO [stderr] 48 | fn consume_ident(peekable: &mut Peekable<Chars>) -> Token {
Dec 01 06:32:11.280 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.280 INFO [stderr] 
Dec 01 06:32:11.280 INFO [stderr] warning: function is never used: `consume_number`
Dec 01 06:32:11.280 INFO [stderr]   --> src/compiler/lex.rs:53:1
Dec 01 06:32:11.280 INFO [stderr]    |
Dec 01 06:32:11.280 INFO [stderr] 53 | fn consume_number(peekable: &mut Peekable<Chars>) -> Token {
Dec 01 06:32:11.280 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.280 INFO [stderr] 
Dec 01 06:32:11.280 INFO [stderr] warning: function is never used: `valid_token_char`
Dec 01 06:32:11.280 INFO [stderr]   --> src/compiler/lex.rs:58:1
Dec 01 06:32:11.280 INFO [stderr]    |
Dec 01 06:32:11.280 INFO [stderr] 58 | fn valid_token_char(ch: &char, tt: ConsumeType) -> bool {
Dec 01 06:32:11.280 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.280 INFO [stderr] 
Dec 01 06:32:11.280 INFO [stderr] warning: function is never used: `shunting_yard`
Dec 01 06:32:11.280 INFO [stderr]   --> src/compiler/lex.rs:71:1
Dec 01 06:32:11.280 INFO [stderr]    |
Dec 01 06:32:11.280 INFO [stderr] 71 | pub fn shunting_yard(tokens: Vec<Token>) -> Vec<Token> {
Dec 01 06:32:11.280 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.280 INFO [stderr] 
Dec 01 06:32:11.280 INFO [stderr] warning: field is never used: `current_line`
Dec 01 06:32:11.280 INFO [stderr]   --> src/assembler/mod.rs:12:5
Dec 01 06:32:11.280 INFO [stderr]    |
Dec 01 06:32:11.280 INFO [stderr] 12 |     current_line: usize,
Dec 01 06:32:11.280 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.280 INFO [stderr] 
Dec 01 06:32:11.280 INFO [stderr] warning: field is never used: `errors`
Dec 01 06:32:11.280 INFO [stderr]   --> src/assembler/mod.rs:13:5
Dec 01 06:32:11.280 INFO [stderr]    |
Dec 01 06:32:11.280 INFO [stderr] 13 |     errors: Vec<String>,
Dec 01 06:32:11.280 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.280 INFO [stderr] 
Dec 01 06:32:11.299 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` which must be used
Dec 01 06:32:11.299 INFO [stderr]   --> src/compiler/lex.rs:38:73
Dec 01 06:32:11.299 INFO [stderr]    |
Dec 01 06:32:11.299 INFO [stderr] 38 |                     ')'             => {tokens.push(Token::RightParen); chars.take(1).collect::<String>();},
Dec 01 06:32:11.299 INFO [stderr]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.299 INFO [stderr]    |
Dec 01 06:32:11.299 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 01 06:32:11.299 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 01 06:32:11.299 INFO [stderr] 
Dec 01 06:32:11.299 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` which must be used
Dec 01 06:32:11.299 INFO [stderr]   --> src/compiler/lex.rs:39:72
Dec 01 06:32:11.299 INFO [stderr]    |
Dec 01 06:32:11.299 INFO [stderr] 39 |                     '('             => {tokens.push(Token::LeftParen); chars.take(1).collect::<String>();},
Dec 01 06:32:11.299 INFO [stderr]    |                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.299 INFO [stderr]    |
Dec 01 06:32:11.299 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 01 06:32:11.299 INFO [stderr] 
Dec 01 06:32:11.299 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` which must be used
Dec 01 06:32:11.299 INFO [stderr]   --> src/compiler/lex.rs:40:42
Dec 01 06:32:11.299 INFO [stderr]    |
Dec 01 06:32:11.299 INFO [stderr] 40 |                     ' '             => { chars.take(1).collect::<String>(); }
Dec 01 06:32:11.299 INFO [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:11.299 INFO [stderr]    |
Dec 01 06:32:11.299 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 01 06:32:11.299 INFO [stderr] 
Dec 01 06:32:14.471 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.72s
Dec 01 06:32:14.475 INFO [stderr] su: No module specific data is present
Dec 01 06:32:15.431 INFO running `"docker" "inspect" "a6a5bc415c728c5ec4971b0d3e7a49d4563e9935bf32596d10675807bafe1903"`
Dec 01 06:32:15.715 INFO running `"docker" "rm" "-f" "a6a5bc415c728c5ec4971b0d3e7a49d4563e9935bf32596d10675807bafe1903"`
Dec 01 06:32:15.900 INFO [stdout] a6a5bc415c728c5ec4971b0d3e7a49d4563e9935bf32596d10675807bafe1903
Dec 01 06:32:15.913 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 06:32:16.339 INFO [stdout] 5979c4130e8d5f7ebb1ac29e4bd3d192e4121fbbeb893921e45641a9911d5dda
Dec 01 06:32:16.341 INFO running `"docker" "start" "-a" "5979c4130e8d5f7ebb1ac29e4bd3d192e4121fbbeb893921e45641a9911d5dda"`
Dec 01 06:32:17.747 INFO [stderr] usermod: no changes
Dec 01 06:32:17.887 INFO [stderr]    Compiling slang v0.1.0 (/source)
Dec 01 06:32:19.255 INFO [stderr] warning: unused import: `assembler::lexer::Lexer`
Dec 01 06:32:19.255 INFO [stderr]   --> src/main.rs:23:5
Dec 01 06:32:19.256 INFO [stderr]    |
Dec 01 06:32:19.256 INFO [stderr] 23 | use assembler::lexer::Lexer;
Dec 01 06:32:19.256 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:19.257 INFO [stderr]    |
Dec 01 06:32:19.257 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 01 06:32:19.257 INFO [stderr] 
Dec 01 06:32:19.258 INFO [stderr] warning: unused imports: `Tokenizer`, `shunting_yard`
Dec 01 06:32:19.258 INFO [stderr]   --> src/main.rs:24:21
Dec 01 06:32:19.258 INFO [stderr]    |
Dec 01 06:32:19.259 INFO [stderr] 24 | use compiler::lex::{Tokenizer, shunting_yard};
Dec 01 06:32:19.259 INFO [stderr]    |                     ^^^^^^^^^  ^^^^^^^^^^^^^
Dec 01 06:32:19.259 INFO [stderr] 
Dec 01 06:32:19.691 INFO [stderr] warning: enum is never used: `Token`
Dec 01 06:32:19.691 INFO [stderr]  --> src/compiler/lex.rs:7:1
Dec 01 06:32:19.691 INFO [stderr]   |
Dec 01 06:32:19.691 INFO [stderr] 7 | pub enum Token {
Dec 01 06:32:19.691 INFO [stderr]   | ^^^^^^^^^^^^^^
Dec 01 06:32:19.691 INFO [stderr]   |
Dec 01 06:32:19.691 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 01 06:32:19.691 INFO [stderr] 
Dec 01 06:32:19.691 INFO [stderr] warning: enum is never used: `ConsumeType`
Dec 01 06:32:19.691 INFO [stderr]   --> src/compiler/lex.rs:15:1
Dec 01 06:32:19.691 INFO [stderr]    |
Dec 01 06:32:19.691 INFO [stderr] 15 | enum ConsumeType { Ident, Number }
Dec 01 06:32:19.691 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 01 06:32:19.691 INFO [stderr] 
Dec 01 06:32:19.691 INFO [stderr] warning: struct is never constructed: `Tokenizer`
Dec 01 06:32:19.691 INFO [stderr]   --> src/compiler/lex.rs:17:1
Dec 01 06:32:19.691 INFO [stderr]    |
Dec 01 06:32:19.691 INFO [stderr] 17 | pub struct Tokenizer<'a> {
Dec 01 06:32:19.691 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:19.691 INFO [stderr] 
Dec 01 06:32:19.691 INFO [stderr] warning: method is never used: `new`
Dec 01 06:32:19.691 INFO [stderr]   --> src/compiler/lex.rs:21:5
Dec 01 06:32:19.691 INFO [stderr]    |
Dec 01 06:32:19.691 INFO [stderr] 21 |     pub fn new(input: &'a str) -> Self {
Dec 01 06:32:19.691 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:19.691 INFO [stderr] 
Dec 01 06:32:19.691 INFO [stderr] warning: method is never used: `tokenize`
Dec 01 06:32:19.691 INFO [stderr]   --> src/compiler/lex.rs:26:5
Dec 01 06:32:19.691 INFO [stderr]    |
Dec 01 06:32:19.691 INFO [stderr] 26 |     pub fn tokenize(&mut self) -> Vec<Token> {
Dec 01 06:32:19.691 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:19.691 INFO [stderr] 
Dec 01 06:32:19.691 INFO [stderr] warning: function is never used: `consume_ident`
Dec 01 06:32:19.691 INFO [stderr]   --> src/compiler/lex.rs:48:1
Dec 01 06:32:19.691 INFO [stderr]    |
Dec 01 06:32:19.691 INFO [stderr] 48 | fn consume_ident(peekable: &mut Peekable<Chars>) -> Token {
Dec 01 06:32:19.691 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:19.691 INFO [stderr] 
Dec 01 06:32:19.691 INFO [stderr] warning: function is never used: `consume_number`
Dec 01 06:32:19.691 INFO [stderr]   --> src/compiler/lex.rs:53:1
Dec 01 06:32:19.691 INFO [stderr]    |
Dec 01 06:32:19.691 INFO [stderr] 53 | fn consume_number(peekable: &mut Peekable<Chars>) -> Token {
Dec 01 06:32:19.691 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:19.692 INFO [stderr] 
Dec 01 06:32:19.692 INFO [stderr] warning: function is never used: `valid_token_char`
Dec 01 06:32:19.692 INFO [stderr]   --> src/compiler/lex.rs:58:1
Dec 01 06:32:19.692 INFO [stderr]    |
Dec 01 06:32:19.692 INFO [stderr] 58 | fn valid_token_char(ch: &char, tt: ConsumeType) -> bool {
Dec 01 06:32:19.692 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:19.692 INFO [stderr] 
Dec 01 06:32:19.692 INFO [stderr] warning: function is never used: `shunting_yard`
Dec 01 06:32:19.692 INFO [stderr]   --> src/compiler/lex.rs:71:1
Dec 01 06:32:19.692 INFO [stderr]    |
Dec 01 06:32:19.692 INFO [stderr] 71 | pub fn shunting_yard(tokens: Vec<Token>) -> Vec<Token> {
Dec 01 06:32:19.692 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:19.692 INFO [stderr] 
Dec 01 06:32:19.696 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` which must be used
Dec 01 06:32:19.696 INFO [stderr]   --> src/compiler/lex.rs:38:73
Dec 01 06:32:19.696 INFO [stderr]    |
Dec 01 06:32:19.696 INFO [stderr] 38 |                     ')'             => {tokens.push(Token::RightParen); chars.take(1).collect::<String>();},
Dec 01 06:32:19.696 INFO [stderr]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:19.696 INFO [stderr]    |
Dec 01 06:32:19.697 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 01 06:32:19.697 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 01 06:32:19.697 INFO [stderr] 
Dec 01 06:32:19.697 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` which must be used
Dec 01 06:32:19.697 INFO [stderr]   --> src/compiler/lex.rs:39:72
Dec 01 06:32:19.697 INFO [stderr]    |
Dec 01 06:32:19.697 INFO [stderr] 39 |                     '('             => {tokens.push(Token::LeftParen); chars.take(1).collect::<String>();},
Dec 01 06:32:19.697 INFO [stderr]    |                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:19.697 INFO [stderr]    |
Dec 01 06:32:19.697 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 01 06:32:19.697 INFO [stderr] 
Dec 01 06:32:19.697 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` which must be used
Dec 01 06:32:19.697 INFO [stderr]   --> src/compiler/lex.rs:40:42
Dec 01 06:32:19.697 INFO [stderr]    |
Dec 01 06:32:19.697 INFO [stderr] 40 |                     ' '             => { chars.take(1).collect::<String>(); }
Dec 01 06:32:19.697 INFO [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 06:32:19.697 INFO [stderr]    |
Dec 01 06:32:19.697 INFO [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 01 06:32:19.697 INFO [stderr] 
Dec 01 06:32:21.226 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.45s
Dec 01 06:32:21.233 INFO [stderr] su: No module specific data is present
Dec 01 06:32:22.135 INFO running `"docker" "inspect" "5979c4130e8d5f7ebb1ac29e4bd3d192e4121fbbeb893921e45641a9911d5dda"`
Dec 01 06:32:22.498 INFO running `"docker" "rm" "-f" "5979c4130e8d5f7ebb1ac29e4bd3d192e4121fbbeb893921e45641a9911d5dda"`
Dec 01 06:32:22.874 INFO [stdout] 5979c4130e8d5f7ebb1ac29e4bd3d192e4121fbbeb893921e45641a9911d5dda
Dec 01 06:32:22.883 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 06:32:23.314 INFO [stdout] 05ffb7d6b38d02929b7a9794a0aa3a849a4ff54e9f0ff6e9fb52f4ececd5b8ae
Dec 01 06:32:23.316 INFO running `"docker" "start" "-a" "05ffb7d6b38d02929b7a9794a0aa3a849a4ff54e9f0ff6e9fb52f4ececd5b8ae"`
Dec 01 06:32:24.919 INFO [stderr] usermod: no changes
Dec 01 06:32:25.075 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
Dec 01 06:32:25.091 INFO [stderr]      Running /target/debug/deps/slang-851da19e6faba3c2
Dec 01 06:32:25.116 INFO [stdout] 
Dec 01 06:32:25.116 INFO [stdout] running 15 tests
Dec 01 06:32:25.135 INFO [stdout] test assembler::test_to_bytes_32 ... ok
Dec 01 06:32:25.136 INFO [stdout] test program::test_jump_to ... ok
Dec 01 06:32:25.136 INFO [stdout] test program::test_next_byte ... ok
Dec 01 06:32:25.137 INFO [stdout] test program::test_load_bytes ... ok
Dec 01 06:32:25.137 INFO [stdout] test program::test_next_code ... ok
Dec 01 06:32:25.137 INFO [stdout] test assembler::test_new_assembler ... ok
Dec 01 06:32:25.137 INFO [stdout] test program::test_next_halfword ... ok
Dec 01 06:32:25.138 INFO [stdout] test vm::test_vm_new ... ok
Dec 01 06:32:25.138 INFO [stdout] test vm::test_swap_instruction ... ok
Dec 01 06:32:25.138 INFO [stdout] test vm::test_fetch_instruction ... ok
Dec 01 06:32:25.139 INFO [stdout] test stack::test_stack_pull ... ok
Dec 01 06:32:25.139 INFO [stdout] test stack::test_stack_init ... ok
Dec 01 06:32:25.139 INFO [stdout] test stack::test_stack_peek ... ok
Dec 01 06:32:25.151 INFO [stdout] test stack::test_stack_push ... ok
Dec 01 06:32:25.151 INFO [stdout] test program::test_reset ... ok
Dec 01 06:32:25.151 INFO [stdout] 
Dec 01 06:32:25.151 INFO [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 06:32:25.151 INFO [stdout] 
Dec 01 06:32:25.159 INFO [stderr] su: No module specific data is present
Dec 01 06:32:26.379 INFO running `"docker" "inspect" "05ffb7d6b38d02929b7a9794a0aa3a849a4ff54e9f0ff6e9fb52f4ececd5b8ae"`
Dec 01 06:32:26.747 INFO running `"docker" "rm" "-f" "05ffb7d6b38d02929b7a9794a0aa3a849a4ff54e9f0ff6e9fb52f4ececd5b8ae"`
Dec 01 06:32:27.119 INFO [stdout] 05ffb7d6b38d02929b7a9794a0aa3a849a4ff54e9f0ff6e9fb52f4ececd5b8ae
