[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 2)
[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 3)
[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 4)
[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 5)
[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 6)
[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 7)
[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 8)
[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 9)
[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 10)
[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 11)
[INFO] cloning repository https://github.com/bigdragon0610/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bigdragon0610/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 624d2f63d380d0c086eee91634819dccefeb53b0
[INFO] testing bigdragon0610/monkey_rust/624d2f63d380d0c086eee91634819dccefeb53b0 against nightly-2024-10-28 for randomize-layout
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbigdragon0610%2Fmonkey_rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bigdragon0610/monkey_rust on toolchain nightly-2024-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bigdragon0610/monkey_rust
[INFO] finished tweaking git repo https://github.com/bigdragon0610/monkey_rust
[INFO] tweaked toml for git repo https://github.com/bigdragon0610/monkey_rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bigdragon0610/monkey_rust 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" "+nightly-2024-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee662960c7bc1b41aea2d91264782be3c8167ccc99ebeae217f799b750181543
[INFO] running `Command { std: "docker" "start" "-a" "ee662960c7bc1b41aea2d91264782be3c8167ccc99ebeae217f799b750181543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee662960c7bc1b41aea2d91264782be3c8167ccc99ebeae217f799b750181543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee662960c7bc1b41aea2d91264782be3c8167ccc99ebeae217f799b750181543", kill_on_drop: false }`
[INFO] [stdout] ee662960c7bc1b41aea2d91264782be3c8167ccc99ebeae217f799b750181543
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c37f4ba394d53ba9a6c52fed7da1bd28c937b8c2b98397ee28d80bd651c6e67
[INFO] running `Command { std: "docker" "start" "-a" "5c37f4ba394d53ba9a6c52fed7da1bd28c937b8c2b98397ee28d80bd651c6e67", kill_on_drop: false }`
[INFO] [stderr]    Compiling monkey_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `precedence`
[INFO] [stdout]    --> src/parser.rs:129:36
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn parse_expression(&mut self, precedence: usize) -> Option<Expression> {
[INFO] [stdout]     |                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_precedence`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Program` is never constructed
[INFO] [stdout]  --> src/ast.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Program {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Program` 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] [stdout] warning: associated items `new`, `token_literal`, and `string` are never used
[INFO] [stdout]   --> src/ast.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Program {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 9  |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn token_literal(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn string(&self) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `LetStatement`, `ReturnStatement`, and `ExpressionStatement` are never constructed
[INFO] [stdout]   --> src/ast.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub enum Statement {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 31 |     LetStatement(LetStatement),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 32 |     ReturnStatement(ReturnStatement),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 33 |     ExpressionStatement(ExpressionStatement),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Statement` 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 `new` is never used
[INFO] [stdout]   --> src/ast.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | impl LetStatement {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 62 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/ast.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl ReturnStatement {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 93 |     pub fn new(token: Token) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Identifier` and `IntegerLiteral` are never constructed
[INFO] [stdout]    --> src/ast.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub enum Expression {
[INFO] [stdout]     |          ---------- variants in this enum
[INFO] [stdout] 137 |     Identifier(Identifier),
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 138 |     IntegerLiteral(IntegerLiteral),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expression` 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 `new` is never used
[INFO] [stdout]    --> src/ast.rs:164:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | impl Identifier {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 164 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]    --> src/ast.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 183 | pub struct IntegerLiteral {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] 184 |     pub token: Token,
[INFO] [stdout] 185 |     pub value: i64,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `IntegerLiteral` 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: enum `Operator` is never used
[INFO] [stdout]   --> src/parser.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Operator {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]   --> src/parser.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Parser<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/parser.rs:30:12
[INFO] [stdout]     |
[INFO] [stdout] 29  | impl Parser<'_> {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 30  |     pub fn new(l: Lexer) -> Parser {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44  |     fn errors(&self) -> &Vec<String> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48  |     fn peek_error(&self, t: TokenType) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55  |     fn next_token(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59  |     fn parse_program(&mut self) -> Program {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     fn parse_statement(&mut self) -> Option<Statement> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80  |     fn parse_let_statement(&mut self) -> Option<Statement> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |     fn parse_return_statement(&mut self) -> Option<Statement> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 116 |     fn parse_expression_statement(&mut self) -> Option<Statement> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 129 |     fn parse_expression(&mut self, precedence: usize) -> Option<Expression> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |     fn parse_identifier(&self) -> Option<Expression> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     fn parese_integer_literal(&mut self) -> Option<Expression> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 164 |     fn cur_token_is(&self, t: TokenType) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 168 |     fn peek_token_is(&self, t: TokenType) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 172 |     fn expect_peek(&mut self, t: TokenType) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "5c37f4ba394d53ba9a6c52fed7da1bd28c937b8c2b98397ee28d80bd651c6e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c37f4ba394d53ba9a6c52fed7da1bd28c937b8c2b98397ee28d80bd651c6e67", kill_on_drop: false }`
[INFO] [stdout] 5c37f4ba394d53ba9a6c52fed7da1bd28c937b8c2b98397ee28d80bd651c6e67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9da2be66eff0a3cc6774f46e6a12303eb156ee6d30cd78116c4371c1aefb1904
[INFO] running `Command { std: "docker" "start" "-a" "9da2be66eff0a3cc6774f46e6a12303eb156ee6d30cd78116c4371c1aefb1904", kill_on_drop: false }`
[INFO] [stderr]    Compiling monkey_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `precedence`
[INFO] [stdout]    --> src/parser.rs:129:36
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn parse_expression(&mut self, precedence: usize) -> Option<Expression> {
[INFO] [stdout]     |                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_precedence`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `token_literal` is never used
[INFO] [stdout]   --> src/ast.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Program {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn token_literal(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Equals`, `LessGrater`, `Sum`, `Product`, `Prefix`, and `Call` are never constructed
[INFO] [stdout]   --> src/parser.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Operator {
[INFO] [stdout]    |      -------- variants in this enum
[INFO] [stdout] 11 |     Lowest,
[INFO] [stdout] 12 |     Equals,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 13 |     LessGrater,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 14 |     Sum,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 15 |     Product,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 16 |     Prefix,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 17 |     Call,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "9da2be66eff0a3cc6774f46e6a12303eb156ee6d30cd78116c4371c1aefb1904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9da2be66eff0a3cc6774f46e6a12303eb156ee6d30cd78116c4371c1aefb1904", kill_on_drop: false }`
[INFO] [stdout] 9da2be66eff0a3cc6774f46e6a12303eb156ee6d30cd78116c4371c1aefb1904
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fe9eb94c9198797cda7d48be08271a806a71104f51f2f209c14b05540a6b5827
[INFO] running `Command { std: "docker" "start" "-a" "fe9eb94c9198797cda7d48be08271a806a71104f51f2f209c14b05540a6b5827", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `precedence`
[INFO] [stderr]    --> src/parser.rs:129:36
[INFO] [stderr]     |
[INFO] [stderr] 129 |     fn parse_expression(&mut self, precedence: usize) -> Option<Expression> {
[INFO] [stderr]     |                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_precedence`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `token_literal` is never used
[INFO] [stderr]   --> src/ast.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 8  | impl Program {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 15 |     pub fn token_literal(&self) -> &str {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Equals`, `LessGrater`, `Sum`, `Product`, `Prefix`, and `Call` are never constructed
[INFO] [stderr]   --> src/parser.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | enum Operator {
[INFO] [stderr]    |      -------- variants in this enum
[INFO] [stderr] 11 |     Lowest,
[INFO] [stderr] 12 |     Equals,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 13 |     LessGrater,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 14 |     Sum,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 15 |     Product,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 16 |     Prefix,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 17 |     Call,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `monkey_rust` (bin "monkey_rust" test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/monkey_rust-ccf1af0d72ca6f43)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test ast::tests::test_string ... ok
[INFO] [stdout] test parser::tests::test_identifier_expression ... ok
[INFO] [stdout] test parser::tests::test_integer_literal_expression ... ok
[INFO] [stdout] test parser::tests::test_let_statements ... ok
[INFO] [stdout] test parser::tests::test_return_statements ... ok
[INFO] [stdout] test lexer::tests::test_next_token ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fe9eb94c9198797cda7d48be08271a806a71104f51f2f209c14b05540a6b5827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe9eb94c9198797cda7d48be08271a806a71104f51f2f209c14b05540a6b5827", kill_on_drop: false }`
[INFO] [stdout] fe9eb94c9198797cda7d48be08271a806a71104f51f2f209c14b05540a6b5827
