[INFO] cloning repository https://github.com/kazukousen/rust-monkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kazukousen/rust-monkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazukousen%2Frust-monkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazukousen%2Frust-monkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f5731a6606fc4c0273954dee20d94a967cbb132
[INFO] checking kazukousen/rust-monkey against master#0e517d38ad0e72f93c734b14fabd4bb9b7441de6 for pr-140557-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazukousen%2Frust-monkey" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kazukousen/rust-monkey on toolchain 0e517d38ad0e72f93c734b14fabd4bb9b7441de6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0e517d38ad0e72f93c734b14fabd4bb9b7441de6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kazukousen/rust-monkey
[INFO] finished tweaking git repo https://github.com/kazukousen/rust-monkey
[INFO] tweaked toml for git repo https://github.com/kazukousen/rust-monkey written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kazukousen/rust-monkey already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0e517d38ad0e72f93c734b14fabd4bb9b7441de6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+0e517d38ad0e72f93c734b14fabd4bb9b7441de6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c9151696231309e5fe4ab609dee2697a58cb06bc5700b6fb248d92d1b238e64
[INFO] running `Command { std: "docker" "start" "-a" "6c9151696231309e5fe4ab609dee2697a58cb06bc5700b6fb248d92d1b238e64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c9151696231309e5fe4ab609dee2697a58cb06bc5700b6fb248d92d1b238e64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c9151696231309e5fe4ab609dee2697a58cb06bc5700b6fb248d92d1b238e64", kill_on_drop: false }`
[INFO] [stdout] 6c9151696231309e5fe4ab609dee2697a58cb06bc5700b6fb248d92d1b238e64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+0e517d38ad0e72f93c734b14fabd4bb9b7441de6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b334c496955840a3f22c5ef9920f6b88f07abc81ee1823283f4c7200b75c62cd
[INFO] running `Command { std: "docker" "start" "-a" "b334c496955840a3f22c5ef9920f6b88f07abc81ee1823283f4c7200b75c62cd", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `prompt`
[INFO] [stdout]  --> src/repl.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let prompt = ">> ";
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_prompt`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_letter` is never used
[INFO] [stdout]  --> src/utils.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn is_letter(s: &String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prompt`
[INFO] [stdout]  --> src/repl.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let prompt = ">> ";
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_prompt`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_digit` is never used
[INFO] [stdout]  --> src/utils.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn is_digit(s: &String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/lexer/token.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub enum TokenType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 5  |     ILLEGAL,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 6  |     EOF,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 7  |     IDENT(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 8  |     INT(String),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 9  |     STRING(String),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 10 |     ASSIGN,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 11 |     PLUS,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 12 |     MINUS,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 13 |     MULTIPLY,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 14 |     DIVIDE,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 15 |     LT,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 16 |     GT,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 17 |     BANG,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 18 |     COMMA,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 19 |     COLON,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 20 |     SEMICOLON,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 21 |     LPAREN,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 22 |     RPAREN,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 23 |     LBRACE,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 24 |     RBRACE,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 25 |     LBRACKET,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 26 |     RBRACKET,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 27 |     FUNCTION,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 28 |     LET,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 29 |     TRUE,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 30 |     FALSE,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 31 |     IF,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 32 |     ELSE,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 33 |     RETURN,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 34 |     EQ,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 35 |     NOTEQ,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_string` is never used
[INFO] [stdout]   --> src/lexer/token.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl TokenType {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 39 |     pub fn from_string(s: &String) -> TokenType {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `new_string` are never used
[INFO] [stdout]   --> src/lexer/token.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 83 | impl Token {
[INFO] [stdout]    | ---------- associated functions in this implementation
[INFO] [stdout] 84 |     pub fn new(s: String, is_string: bool, line_num: u8, column_num: u8) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |     fn new_string(s: String, line_num: u8, column_num: u8) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lexer` is never constructed
[INFO] [stdout]  --> src/lexer/lexer.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Lexer {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Lexer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `EMPTY_STR` is never used
[INFO] [stdout]   --> src/lexer/lexer.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub static EMPTY_STR: &'static str = "";
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/lexer/lexer.rs:17:12
[INFO] [stdout]     |
[INFO] [stdout] 16  | impl Lexer {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] 17  |     pub fn new(input: String) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30  |     fn read_char(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37  |     fn get_char(&self, pos: i32) -> String {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44  |     fn peek_char(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48  |     pub fn next_token(&mut self) -> token::Token {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 78  |     fn read_string(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 94  |     fn read_identifier(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     fn read_digit(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     fn skip_whitespace(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "b334c496955840a3f22c5ef9920f6b88f07abc81ee1823283f4c7200b75c62cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b334c496955840a3f22c5ef9920f6b88f07abc81ee1823283f4c7200b75c62cd", kill_on_drop: false }`
[INFO] [stdout] b334c496955840a3f22c5ef9920f6b88f07abc81ee1823283f4c7200b75c62cd