Dec 02 08:00:35.068 INFO testing EmmaLa/MonkeyInterpreter against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 08:00:35.068 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt 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 02 08:00:35.463 INFO [stdout] d0eb3802a5d4b7fa8b903d1b7141f73ff256b15be5d424f17a96b62343b0b03f
Dec 02 08:00:35.467 INFO running `"docker" "start" "-a" "d0eb3802a5d4b7fa8b903d1b7141f73ff256b15be5d424f17a96b62343b0b03f"`
Dec 02 08:00:37.642 INFO [stderr] usermod: no changes
Dec 02 08:00:37.739 INFO [stderr]    Compiling monkey_int v0.1.0 (/source)
Dec 02 08:00:38.219 INFO [stderr] warning: unused import: `ast::Statement::*`
Dec 02 08:00:38.219 INFO [stderr]    --> src/parser/mod.rs:155:7
Dec 02 08:00:38.219 INFO [stderr]     |
Dec 02 08:00:38.220 INFO [stderr] 155 |         use ast::Statement::*;
Dec 02 08:00:38.220 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^
Dec 02 08:00:38.220 INFO [stderr]     |
Dec 02 08:00:38.220 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 02 08:00:38.220 INFO [stderr] 
Dec 02 08:00:38.220 INFO [stderr] warning: unused import: `repl::Repl`
Dec 02 08:00:38.220 INFO [stderr]  --> src/main.rs:6:5
Dec 02 08:00:38.220 INFO [stderr]   |
Dec 02 08:00:38.220 INFO [stderr] 6 | use repl::Repl;
Dec 02 08:00:38.220 INFO [stderr]   |     ^^^^^^^^^^
Dec 02 08:00:38.220 INFO [stderr] 
Dec 02 08:00:38.220 INFO [stderr] warning: unused import: `std::fs::File`
Dec 02 08:00:38.220 INFO [stderr]  --> src/main.rs:8:5
Dec 02 08:00:38.220 INFO [stderr]   |
Dec 02 08:00:38.220 INFO [stderr] 8 | use std::fs::File;
Dec 02 08:00:38.220 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 02 08:00:38.220 INFO [stderr] 
Dec 02 08:00:38.220 INFO [stderr] warning: unused import: `std::io::Read`
Dec 02 08:00:38.220 INFO [stderr]  --> src/main.rs:9:5
Dec 02 08:00:38.220 INFO [stderr]   |
Dec 02 08:00:38.220 INFO [stderr] 9 | use std::io::Read;
Dec 02 08:00:38.220 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 02 08:00:38.220 INFO [stderr] 
Dec 02 08:00:38.220 INFO [stderr] warning: unused import: `std::iter::Peekable`
Dec 02 08:00:38.220 INFO [stderr]   --> src/main.rs:10:5
Dec 02 08:00:38.220 INFO [stderr]    |
Dec 02 08:00:38.220 INFO [stderr] 10 | use std::iter::Peekable;
Dec 02 08:00:38.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:38.220 INFO [stderr] 
Dec 02 08:00:38.220 INFO [stderr] warning: unused import: `lexer::token::Token::*`
Dec 02 08:00:38.220 INFO [stderr]   --> src/main.rs:13:5
Dec 02 08:00:38.220 INFO [stderr]    |
Dec 02 08:00:38.221 INFO [stderr] 13 | use lexer::token::Token::*;
Dec 02 08:00:38.221 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:38.221 INFO [stderr] 
Dec 02 08:00:38.358 INFO [stderr] warning: unused variable: `n`
Dec 02 08:00:38.358 INFO [stderr]   --> src/repl/mod.rs:26:10
Dec 02 08:00:38.358 INFO [stderr]    |
Dec 02 08:00:38.358 INFO [stderr] 26 |             Ok(n) => buffer,
Dec 02 08:00:38.358 INFO [stderr]    |                ^ help: consider using `_n` instead
Dec 02 08:00:38.358 INFO [stderr]    |
Dec 02 08:00:38.358 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 02 08:00:38.358 INFO [stderr] 
Dec 02 08:00:38.358 INFO [stderr] warning: unused variable: `error`
Dec 02 08:00:38.358 INFO [stderr]   --> src/repl/mod.rs:27:11
Dec 02 08:00:38.358 INFO [stderr]    |
Dec 02 08:00:38.358 INFO [stderr] 27 |             Err(error) => {
Dec 02 08:00:38.359 INFO [stderr]    |                 ^^^^^ help: consider using `_error` instead
Dec 02 08:00:38.359 INFO [stderr] 
Dec 02 08:00:38.365 INFO [stderr] warning: variable does not need to be mutable
Dec 02 08:00:38.365 INFO [stderr]   --> src/main.rs:51:9
Dec 02 08:00:38.365 INFO [stderr]    |
Dec 02 08:00:38.365 INFO [stderr] 51 |     let mut content = String::from("-4+2;");
Dec 02 08:00:38.365 INFO [stderr]    |         ----^^^^^^^
Dec 02 08:00:38.365 INFO [stderr]    |         |
Dec 02 08:00:38.365 INFO [stderr]    |         help: remove this `mut`
Dec 02 08:00:38.365 INFO [stderr]    |
Dec 02 08:00:38.366 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 02 08:00:38.366 INFO [stderr] 
Dec 02 08:00:38.408 INFO [stderr] warning: function is never used: `is_equal_sign`
Dec 02 08:00:38.408 INFO [stderr]   --> src/lexer/reader.rs:13:1
Dec 02 08:00:38.408 INFO [stderr]    |
Dec 02 08:00:38.408 INFO [stderr] 13 | fn is_equal_sign(character: &char) -> bool {
Dec 02 08:00:38.408 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:38.408 INFO [stderr]    |
Dec 02 08:00:38.408 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 02 08:00:38.408 INFO [stderr] 
Dec 02 08:00:38.408 INFO [stderr] warning: method is never used: `read_identifier`
Dec 02 08:00:38.408 INFO [stderr]   --> src/lexer/reader.rs:69:2
Dec 02 08:00:38.408 INFO [stderr]    |
Dec 02 08:00:38.408 INFO [stderr] 69 |     pub fn read_identifier(&mut self, character: char) -> Option<Token> {
Dec 02 08:00:38.408 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:38.408 INFO [stderr] 
Dec 02 08:00:38.408 INFO [stderr] warning: function is never used: `is_letter`
Dec 02 08:00:38.408 INFO [stderr]   --> src/lexer/mod.rs:13:1
Dec 02 08:00:38.408 INFO [stderr]    |
Dec 02 08:00:38.408 INFO [stderr] 13 | fn is_letter(character: &char) -> bool {
Dec 02 08:00:38.408 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:38.408 INFO [stderr] 
Dec 02 08:00:38.408 INFO [stderr] warning: struct is never constructed: `Repl`
Dec 02 08:00:38.408 INFO [stderr]  --> src/repl/mod.rs:6:1
Dec 02 08:00:38.408 INFO [stderr]   |
Dec 02 08:00:38.408 INFO [stderr] 6 | pub struct Repl;
Dec 02 08:00:38.408 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 02 08:00:38.408 INFO [stderr] 
Dec 02 08:00:38.408 INFO [stderr] warning: method is never used: `run`
Dec 02 08:00:38.408 INFO [stderr]  --> src/repl/mod.rs:9:2
Dec 02 08:00:38.408 INFO [stderr]   |
Dec 02 08:00:38.408 INFO [stderr] 9 |     pub fn run(){
Dec 02 08:00:38.408 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 02 08:00:38.408 INFO [stderr] 
Dec 02 08:00:38.408 INFO [stderr] warning: method is never used: `read_user_input`
Dec 02 08:00:38.408 INFO [stderr]   --> src/repl/mod.rs:23:2
Dec 02 08:00:38.408 INFO [stderr]    |
Dec 02 08:00:38.408 INFO [stderr] 23 |     fn read_user_input(&mut self) -> String {
Dec 02 08:00:38.408 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:38.408 INFO [stderr] 
Dec 02 08:00:38.409 INFO [stderr] warning: variant is never constructed: `Expression`
Dec 02 08:00:38.409 INFO [stderr]   --> src/ast/mod.rs:51:2
Dec 02 08:00:38.409 INFO [stderr]    |
Dec 02 08:00:38.409 INFO [stderr] 51 |       Expression {
Dec 02 08:00:38.409 INFO [stderr]    |  _____^
Dec 02 08:00:38.409 INFO [stderr] 52 | |         token: Token,
Dec 02 08:00:38.409 INFO [stderr] 53 | |         value: Box<Statement>
Dec 02 08:00:38.409 INFO [stderr] 54 | |     },
Dec 02 08:00:38.409 INFO [stderr]    | |_____^
Dec 02 08:00:38.409 INFO [stderr] 
Dec 02 08:00:38.409 INFO [stderr] warning: variant is never constructed: `Call`
Dec 02 08:00:38.409 INFO [stderr]   --> src/parser/mod.rs:15:2
Dec 02 08:00:38.409 INFO [stderr]    |
Dec 02 08:00:38.409 INFO [stderr] 15 |     Call = 7
Dec 02 08:00:38.409 INFO [stderr]    |     ^^^^^^^^
Dec 02 08:00:38.409 INFO [stderr] 
Dec 02 08:00:38.409 INFO [stderr] warning: method is never used: `next_token_is_int`
Dec 02 08:00:38.409 INFO [stderr]    --> src/parser/mod.rs:236:2
Dec 02 08:00:38.409 INFO [stderr]     |
Dec 02 08:00:38.409 INFO [stderr] 236 |     fn next_token_is_int(&mut self) -> bool {
Dec 02 08:00:38.409 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:38.409 INFO [stderr] 
Dec 02 08:00:38.410 INFO [stderr] warning: variable `PROMPT` should have a snake case name such as `prompt`
Dec 02 08:00:38.410 INFO [stderr]   --> src/repl/mod.rs:11:7
Dec 02 08:00:38.410 INFO [stderr]    |
Dec 02 08:00:38.410 INFO [stderr] 11 |         let PROMPT = ">> ";
Dec 02 08:00:38.410 INFO [stderr]    |             ^^^^^^
Dec 02 08:00:38.410 INFO [stderr]    |
Dec 02 08:00:38.410 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 02 08:00:38.410 INFO [stderr] 
Dec 02 08:00:38.410 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:00:38.410 INFO [stderr]   --> src/repl/mod.rs:14:4
Dec 02 08:00:38.410 INFO [stderr]    |
Dec 02 08:00:38.410 INFO [stderr] 14 |             io::stdout().flush();
Dec 02 08:00:38.410 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:38.410 INFO [stderr]    |
Dec 02 08:00:38.410 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 02 08:00:38.410 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:00:38.410 INFO [stderr] 
Dec 02 08:00:40.243 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.56s
Dec 02 08:00:40.243 INFO [stderr] su: No module specific data is present
Dec 02 08:00:41.513 INFO running `"docker" "inspect" "d0eb3802a5d4b7fa8b903d1b7141f73ff256b15be5d424f17a96b62343b0b03f"`
Dec 02 08:00:41.881 INFO running `"docker" "rm" "-f" "d0eb3802a5d4b7fa8b903d1b7141f73ff256b15be5d424f17a96b62343b0b03f"`
Dec 02 08:00:42.255 INFO [stdout] d0eb3802a5d4b7fa8b903d1b7141f73ff256b15be5d424f17a96b62343b0b03f
Dec 02 08:00:42.261 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt 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 02 08:00:42.643 INFO [stdout] 68305758b145daa241cc2ecffd60a2aeb08789a378eff8255b5a4ccd1e8f2f6c
Dec 02 08:00:42.651 INFO running `"docker" "start" "-a" "68305758b145daa241cc2ecffd60a2aeb08789a378eff8255b5a4ccd1e8f2f6c"`
Dec 02 08:00:44.147 INFO [stderr] usermod: no changes
Dec 02 08:00:44.211 INFO [stderr]    Compiling monkey_int v0.1.0 (/source)
Dec 02 08:00:44.895 INFO [stderr] warning: unused import: `ast::Statement::*`
Dec 02 08:00:44.895 INFO [stderr]    --> src/parser/mod.rs:155:7
Dec 02 08:00:44.895 INFO [stderr]     |
Dec 02 08:00:44.895 INFO [stderr] 155 |         use ast::Statement::*;
Dec 02 08:00:44.895 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^
Dec 02 08:00:44.895 INFO [stderr]     |
Dec 02 08:00:44.895 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 02 08:00:44.895 INFO [stderr] 
Dec 02 08:00:44.895 INFO [stderr] warning: unused import: `repl::Repl`
Dec 02 08:00:44.895 INFO [stderr]  --> src/main.rs:6:5
Dec 02 08:00:44.895 INFO [stderr]   |
Dec 02 08:00:44.895 INFO [stderr] 6 | use repl::Repl;
Dec 02 08:00:44.895 INFO [stderr]   |     ^^^^^^^^^^
Dec 02 08:00:44.895 INFO [stderr] 
Dec 02 08:00:44.895 INFO [stderr] warning: unused import: `std::fs::File`
Dec 02 08:00:44.895 INFO [stderr]  --> src/main.rs:8:5
Dec 02 08:00:44.895 INFO [stderr]   |
Dec 02 08:00:44.895 INFO [stderr] 8 | use std::fs::File;
Dec 02 08:00:44.895 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 02 08:00:44.895 INFO [stderr] 
Dec 02 08:00:44.895 INFO [stderr] warning: unused import: `std::io::Read`
Dec 02 08:00:44.895 INFO [stderr]  --> src/main.rs:9:5
Dec 02 08:00:44.895 INFO [stderr]   |
Dec 02 08:00:44.895 INFO [stderr] 9 | use std::io::Read;
Dec 02 08:00:44.895 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 02 08:00:44.895 INFO [stderr] 
Dec 02 08:00:44.895 INFO [stderr] warning: unused import: `std::iter::Peekable`
Dec 02 08:00:44.895 INFO [stderr]   --> src/main.rs:10:5
Dec 02 08:00:44.895 INFO [stderr]    |
Dec 02 08:00:44.895 INFO [stderr] 10 | use std::iter::Peekable;
Dec 02 08:00:44.895 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:44.895 INFO [stderr] 
Dec 02 08:00:44.895 INFO [stderr] warning: unused import: `lexer::token::Token::*`
Dec 02 08:00:44.895 INFO [stderr]   --> src/main.rs:13:5
Dec 02 08:00:44.895 INFO [stderr]    |
Dec 02 08:00:44.895 INFO [stderr] 13 | use lexer::token::Token::*;
Dec 02 08:00:44.895 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:44.895 INFO [stderr] 
Dec 02 08:00:45.095 INFO [stderr] warning: unused variable: `n`
Dec 02 08:00:45.095 INFO [stderr]   --> src/repl/mod.rs:26:10
Dec 02 08:00:45.095 INFO [stderr]    |
Dec 02 08:00:45.095 INFO [stderr] 26 |             Ok(n) => buffer,
Dec 02 08:00:45.095 INFO [stderr]    |                ^ help: consider using `_n` instead
Dec 02 08:00:45.095 INFO [stderr]    |
Dec 02 08:00:45.095 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 02 08:00:45.095 INFO [stderr] 
Dec 02 08:00:45.095 INFO [stderr] warning: unused variable: `error`
Dec 02 08:00:45.095 INFO [stderr]   --> src/repl/mod.rs:27:11
Dec 02 08:00:45.095 INFO [stderr]    |
Dec 02 08:00:45.095 INFO [stderr] 27 |             Err(error) => {
Dec 02 08:00:45.095 INFO [stderr]    |                 ^^^^^ help: consider using `_error` instead
Dec 02 08:00:45.095 INFO [stderr] 
Dec 02 08:00:45.107 INFO [stderr] warning: variable does not need to be mutable
Dec 02 08:00:45.107 INFO [stderr]   --> src/main.rs:51:9
Dec 02 08:00:45.107 INFO [stderr]    |
Dec 02 08:00:45.107 INFO [stderr] 51 |     let mut content = String::from("-4+2;");
Dec 02 08:00:45.107 INFO [stderr]    |         ----^^^^^^^
Dec 02 08:00:45.107 INFO [stderr]    |         |
Dec 02 08:00:45.107 INFO [stderr]    |         help: remove this `mut`
Dec 02 08:00:45.107 INFO [stderr]    |
Dec 02 08:00:45.107 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 02 08:00:45.107 INFO [stderr] 
Dec 02 08:00:45.158 INFO [stderr] warning: function is never used: `is_equal_sign`
Dec 02 08:00:45.158 INFO [stderr]   --> src/lexer/reader.rs:13:1
Dec 02 08:00:45.158 INFO [stderr]    |
Dec 02 08:00:45.158 INFO [stderr] 13 | fn is_equal_sign(character: &char) -> bool {
Dec 02 08:00:45.158 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:45.158 INFO [stderr]    |
Dec 02 08:00:45.158 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 02 08:00:45.158 INFO [stderr] 
Dec 02 08:00:45.158 INFO [stderr] warning: method is never used: `read_identifier`
Dec 02 08:00:45.158 INFO [stderr]   --> src/lexer/reader.rs:69:2
Dec 02 08:00:45.158 INFO [stderr]    |
Dec 02 08:00:45.158 INFO [stderr] 69 |     pub fn read_identifier(&mut self, character: char) -> Option<Token> {
Dec 02 08:00:45.158 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:45.158 INFO [stderr] 
Dec 02 08:00:45.158 INFO [stderr] warning: function is never used: `is_letter`
Dec 02 08:00:45.158 INFO [stderr]   --> src/lexer/mod.rs:13:1
Dec 02 08:00:45.158 INFO [stderr]    |
Dec 02 08:00:45.158 INFO [stderr] 13 | fn is_letter(character: &char) -> bool {
Dec 02 08:00:45.158 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:45.158 INFO [stderr] 
Dec 02 08:00:45.158 INFO [stderr] warning: struct is never constructed: `Repl`
Dec 02 08:00:45.158 INFO [stderr]  --> src/repl/mod.rs:6:1
Dec 02 08:00:45.158 INFO [stderr]   |
Dec 02 08:00:45.158 INFO [stderr] 6 | pub struct Repl;
Dec 02 08:00:45.158 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 02 08:00:45.158 INFO [stderr] 
Dec 02 08:00:45.158 INFO [stderr] warning: method is never used: `run`
Dec 02 08:00:45.158 INFO [stderr]  --> src/repl/mod.rs:9:2
Dec 02 08:00:45.158 INFO [stderr]   |
Dec 02 08:00:45.158 INFO [stderr] 9 |     pub fn run(){
Dec 02 08:00:45.158 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 02 08:00:45.158 INFO [stderr] 
Dec 02 08:00:45.158 INFO [stderr] warning: method is never used: `read_user_input`
Dec 02 08:00:45.158 INFO [stderr]   --> src/repl/mod.rs:23:2
Dec 02 08:00:45.158 INFO [stderr]    |
Dec 02 08:00:45.158 INFO [stderr] 23 |     fn read_user_input(&mut self) -> String {
Dec 02 08:00:45.158 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:45.158 INFO [stderr] 
Dec 02 08:00:45.158 INFO [stderr] warning: variant is never constructed: `Expression`
Dec 02 08:00:45.158 INFO [stderr]   --> src/ast/mod.rs:51:2
Dec 02 08:00:45.158 INFO [stderr]    |
Dec 02 08:00:45.158 INFO [stderr] 51 |       Expression {
Dec 02 08:00:45.158 INFO [stderr]    |  _____^
Dec 02 08:00:45.158 INFO [stderr] 52 | |         token: Token,
Dec 02 08:00:45.158 INFO [stderr] 53 | |         value: Box<Statement>
Dec 02 08:00:45.158 INFO [stderr] 54 | |     },
Dec 02 08:00:45.158 INFO [stderr]    | |_____^
Dec 02 08:00:45.158 INFO [stderr] 
Dec 02 08:00:45.158 INFO [stderr] warning: variant is never constructed: `Call`
Dec 02 08:00:45.158 INFO [stderr]   --> src/parser/mod.rs:15:2
Dec 02 08:00:45.158 INFO [stderr]    |
Dec 02 08:00:45.158 INFO [stderr] 15 |     Call = 7
Dec 02 08:00:45.158 INFO [stderr]    |     ^^^^^^^^
Dec 02 08:00:45.158 INFO [stderr] 
Dec 02 08:00:45.158 INFO [stderr] warning: method is never used: `next_token_is_int`
Dec 02 08:00:45.158 INFO [stderr]    --> src/parser/mod.rs:236:2
Dec 02 08:00:45.158 INFO [stderr]     |
Dec 02 08:00:45.158 INFO [stderr] 236 |     fn next_token_is_int(&mut self) -> bool {
Dec 02 08:00:45.158 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:45.158 INFO [stderr] 
Dec 02 08:00:45.163 INFO [stderr] warning: variable `PROMPT` should have a snake case name such as `prompt`
Dec 02 08:00:45.163 INFO [stderr]   --> src/repl/mod.rs:11:7
Dec 02 08:00:45.163 INFO [stderr]    |
Dec 02 08:00:45.163 INFO [stderr] 11 |         let PROMPT = ">> ";
Dec 02 08:00:45.163 INFO [stderr]    |             ^^^^^^
Dec 02 08:00:45.163 INFO [stderr]    |
Dec 02 08:00:45.163 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 02 08:00:45.163 INFO [stderr] 
Dec 02 08:00:45.163 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 08:00:45.163 INFO [stderr]   --> src/repl/mod.rs:14:4
Dec 02 08:00:45.163 INFO [stderr]    |
Dec 02 08:00:45.163 INFO [stderr] 14 |             io::stdout().flush();
Dec 02 08:00:45.163 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
Dec 02 08:00:45.163 INFO [stderr]    |
Dec 02 08:00:45.163 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 02 08:00:45.163 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 08:00:45.163 INFO [stderr] 
Dec 02 08:00:45.648 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
Dec 02 08:00:45.650 INFO [stderr] su: No module specific data is present
Dec 02 08:00:46.664 INFO running `"docker" "inspect" "68305758b145daa241cc2ecffd60a2aeb08789a378eff8255b5a4ccd1e8f2f6c"`
Dec 02 08:00:46.977 INFO running `"docker" "rm" "-f" "68305758b145daa241cc2ecffd60a2aeb08789a378eff8255b5a4ccd1e8f2f6c"`
Dec 02 08:00:47.386 INFO [stdout] 68305758b145daa241cc2ecffd60a2aeb08789a378eff8255b5a4ccd1e8f2f6c
Dec 02 08:00:47.395 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt 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 02 08:00:47.942 INFO [stdout] 93cfb57ede04176dbd9c7ed95e914307f486ef04930ffa0a41654daf480258cf
Dec 02 08:00:47.944 INFO running `"docker" "start" "-a" "93cfb57ede04176dbd9c7ed95e914307f486ef04930ffa0a41654daf480258cf"`
Dec 02 08:00:50.159 INFO [stderr] usermod: no changes
Dec 02 08:00:50.231 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 02 08:00:50.243 INFO [stderr]      Running /target/debug/deps/monkey_int-a5441ff8dae6e13c
Dec 02 08:00:50.251 INFO [stdout] 
Dec 02 08:00:50.251 INFO [stdout] running 0 tests
Dec 02 08:00:50.251 INFO [stdout] 
Dec 02 08:00:50.251 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 02 08:00:50.251 INFO [stdout] 
Dec 02 08:00:50.253 INFO [stderr] su: No module specific data is present
Dec 02 08:00:51.690 INFO running `"docker" "inspect" "93cfb57ede04176dbd9c7ed95e914307f486ef04930ffa0a41654daf480258cf"`
Dec 02 08:00:51.931 INFO running `"docker" "rm" "-f" "93cfb57ede04176dbd9c7ed95e914307f486ef04930ffa0a41654daf480258cf"`
Dec 02 08:00:52.237 INFO [stdout] 93cfb57ede04176dbd9c7ed95e914307f486ef04930ffa0a41654daf480258cf
