[INFO] cloning repository https://github.com/hendrikmakait/monkey-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hendrikmakait/monkey-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhendrikmakait%2Fmonkey-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhendrikmakait%2Fmonkey-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8489127611357725f1e34b5fb2d2408ce89f427d
[INFO] checking hendrikmakait/monkey-rs against master#9bfa31f632912180dc742809bcc51a97f2d7079d for pr-140151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhendrikmakait%2Fmonkey-rs" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hendrikmakait/monkey-rs on toolchain 9bfa31f632912180dc742809bcc51a97f2d7079d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hendrikmakait/monkey-rs
[INFO] finished tweaking git repo https://github.com/hendrikmakait/monkey-rs
[INFO] tweaked toml for git repo https://github.com/hendrikmakait/monkey-rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hendrikmakait/monkey-rs 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" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5aebfe4026b3397d423fe9980f488249cd34fa1092e435be772941659b0b86d
[INFO] running `Command { std: "docker" "start" "-a" "d5aebfe4026b3397d423fe9980f488249cd34fa1092e435be772941659b0b86d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5aebfe4026b3397d423fe9980f488249cd34fa1092e435be772941659b0b86d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5aebfe4026b3397d423fe9980f488249cd34fa1092e435be772941659b0b86d", kill_on_drop: false }`
[INFO] [stdout] d5aebfe4026b3397d423fe9980f488249cd34fa1092e435be772941659b0b86d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c28c644b7a531942b826a5831f82fa3d088d146f5dbe4683953ea3a9305d37c
[INFO] running `Command { std: "docker" "start" "-a" "9c28c644b7a531942b826a5831f82fa3d088d146f5dbe4683953ea3a9305d37c", kill_on_drop: false }`
[INFO] [stderr]     Checking monkey-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Lexer` is never constructed
[INFO] [stdout]  --> src/lexer.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Lexer {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_char`, and `next_token` are never used
[INFO] [stdout]   --> src/lexer.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Lexer {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(input: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn read_char(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn next_token(&mut self) -> Token {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/token.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | pub enum Token {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 3  |     Illegal,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 4  |     EoF,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 5  |
[INFO] [stdout] 6  |     Ident(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 7  |     Int(i64),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 8  |
[INFO] [stdout] 9  |     Assign,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 10 |     Plus,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 11 |
[INFO] [stdout] 12 |     Comma,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 13 |     Semicolon,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 14 |
[INFO] [stdout] 15 |     LParen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 16 |     RParen,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 17 |     LBrace,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 18 |     RBrace,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |
[INFO] [stdout] 20 |     Function,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 21 |     Let,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lexer.rs:74:14
[INFO] [stdout]    |
[INFO] [stdout] 74 |         for (i, tt) in tests.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Illegal`, `Ident`, `Int`, `Function`, and `Let` are never constructed
[INFO] [stdout]   --> src/token.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | pub enum Token {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 3  |     Illegal,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 6  |     Ident(String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 7  |     Int(i64),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     Function,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 21 |     Let,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "9c28c644b7a531942b826a5831f82fa3d088d146f5dbe4683953ea3a9305d37c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c28c644b7a531942b826a5831f82fa3d088d146f5dbe4683953ea3a9305d37c", kill_on_drop: false }`
[INFO] [stdout] 9c28c644b7a531942b826a5831f82fa3d088d146f5dbe4683953ea3a9305d37c
