[INFO] cloning repository https://github.com/WilliamTakeshi/rust-monkey-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WilliamTakeshi/rust-monkey-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWilliamTakeshi%2Frust-monkey-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWilliamTakeshi%2Frust-monkey-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ff22d45423737313075141910ddc7a2c3d76350
[INFO] checking WilliamTakeshi/rust-monkey-interpreter/7ff22d45423737313075141910ddc7a2c3d76350 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWilliamTakeshi%2Frust-monkey-interpreter" "/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/WilliamTakeshi/rust-monkey-interpreter on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/WilliamTakeshi/rust-monkey-interpreter
[INFO] finished tweaking git repo https://github.com/WilliamTakeshi/rust-monkey-interpreter
[INFO] tweaked toml for git repo https://github.com/WilliamTakeshi/rust-monkey-interpreter written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/WilliamTakeshi/rust-monkey-interpreter 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e639887691c0513a3593ec0c90e22bb3b5d129dac07ef241b609ea877dbb0c41
[INFO] running `Command { std: "docker" "start" "-a" "e639887691c0513a3593ec0c90e22bb3b5d129dac07ef241b609ea877dbb0c41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e639887691c0513a3593ec0c90e22bb3b5d129dac07ef241b609ea877dbb0c41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e639887691c0513a3593ec0c90e22bb3b5d129dac07ef241b609ea877dbb0c41", kill_on_drop: false }`
[INFO] [stdout] e639887691c0513a3593ec0c90e22bb3b5d129dac07ef241b609ea877dbb0c41
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea1c1be8c62f4d5b64ef115c783a75821b233527a0ed1016c5a625b10d2e2bbc
[INFO] running `Command { std: "docker" "start" "-a" "ea1c1be8c62f4d5b64ef115c783a75821b233527a0ed1016c5a625b10d2e2bbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling anyhow v1.0.82
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]     Checking rust-monkey-interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias `ModifyFn` is never used
[INFO] [stdout]  --> src/ast/modify.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub type ModifyFn<'a> = &'a dyn Fn(Expression) -> Expression;
[INFO] [stdout]   |          ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modify_program` is never used
[INFO] [stdout]  --> src/ast/modify.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn modify_program(program: Program, func: ModifyFn) -> Program {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modify_statements` is never used
[INFO] [stdout]   --> src/ast/modify.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn modify_statements(statements: Vec<Statement>, func: ModifyFn) -> Vec<Statement> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modify_statement` is never used
[INFO] [stdout]   --> src/ast/modify.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn modify_statement(statement: Statement, func: ModifyFn) -> Statement {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modify_exprs` is never used
[INFO] [stdout]   --> src/ast/modify.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn modify_exprs(exprs: Vec<Expression>, func: ModifyFn) -> Vec<Expression> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modify_expr` is never used
[INFO] [stdout]   --> src/ast/modify.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn modify_expr(expr: Expression, func: ModifyFn) -> Expression {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/code/code.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub struct Definition {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 79 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Definition` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string` is never used
[INFO] [stdout]   --> src/code/code.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub fn string(instructions: Instructions) -> String {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `format_instruction` is never used
[INFO] [stdout]    --> src/code/code.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 | pub fn format_instruction(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_operands` is never used
[INFO] [stdout]    --> src/code/code.rs:252:8
[INFO] [stdout]     |
[INFO] [stdout] 252 | pub fn read_operands(def: Definition, instructions: Instructions) -> (Vec<u16>, usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/compiler/compiler.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 53 | impl Compiler {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 54 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Evaluator` is never constructed
[INFO] [stdout]   --> src/evaluator/eval.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Evaluator {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/evaluator/eval.rs:18:12
[INFO] [stdout]     |
[INFO] [stdout] 17  | impl Evaluator {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] 18  |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24  |     pub fn new_with_env(environment: Environment) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30  |     pub fn eval_program(&mut self, program: Program) -> Object {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44  |     fn eval_statements(&mut self, statements: Vec<Statement>) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59  |     fn eval_block(&mut self, statements: Vec<Statement>) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74  |     fn eval_statement(&mut self, statement: Statement) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96  |     pub fn eval_expr(&mut self, expr: Expression) -> Object {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     fn eval_hash_literal(&mut self, nodes: Vec<(Expression, Expression)>) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 176 |     fn eval_ident(&mut self, ident: String) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 190 |     fn eval_prefix_expression(&mut self, op: Prefix, right: Object) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 |     fn eval_infix_expression(&mut self, op: Infix, left: Object, right: Object) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 221 |     fn eval_string_infix_expression(&self, op: Infix, left: String, right: String) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 231 |     fn eval_integer_infix_expression(&self, op: Infix, left: i64, right: i64) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 244 |     fn eval_bool_infix_expression(&self, op: Infix, left: bool, right: bool) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 255 |     fn eval_if_expression(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 272 |     fn eval_call_expression(&mut self, function: Expression, args: Vec<Expression>) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 292 |     fn apply_function(&mut self, function: Object, args: Vec<Object>) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 326 |     fn extend_function_env(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 346 |     fn eval_expressions(&mut self, exprs: Vec<Expression>) -> Vec<Object> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 361 |     fn eval_index_expression(&self, left: Object, index: Object) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 383 |     fn unwrap_return_value(&self, obj: Object) -> Object {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 390 |     fn is_truthy(&self, obj: Object) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 398 |     fn is_error(&self, obj: &Object) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `define_macros` is never used
[INFO] [stdout]   --> src/evaluator/macro_expansion.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn define_macros(mut program: Program, mut env: Environment) -> (Program, Environment) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_macro_definition` is never used
[INFO] [stdout]   --> src/evaluator/macro_expansion.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn is_macro_definition(stmt: &Statement) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_macro` is never used
[INFO] [stdout]   --> src/evaluator/macro_expansion.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn add_macro(stmt: Statement, mut env: Environment) -> Environment {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expand_macros` is never used
[INFO] [stdout]   --> src/evaluator/macro_expansion.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn expand_macros(program: Program, env: Environment) -> Vec<Statement> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_macro_call` is never used
[INFO] [stdout]   --> src/evaluator/macro_expansion.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn is_macro_call(expr: Expression, env: Environment) -> (Object, bool) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quote_args` is never used
[INFO] [stdout]    --> src/evaluator/macro_expansion.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn quote_args(expr: Expression) -> Vec<Object> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `extend_macro_env` is never used
[INFO] [stdout]    --> src/evaluator/macro_expansion.rs:142:4
[INFO] [stdout]     |
[INFO] [stdout] 142 | fn extend_macro_env(macro_obj: Object, args: Vec<Object>) -> Environment {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `quote` is never used
[INFO] [stdout]   --> src/evaluator/quote_unquote.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn quote(expr: Expression, env: Ref<Environment>) -> Object {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eval_unquote_calls` is never used
[INFO] [stdout]   --> src/evaluator/quote_unquote.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn eval_unquote_calls(quoted: Expression, env: Ref<Environment>) -> Expression {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_unquote_call` is never used
[INFO] [stdout]   --> src/evaluator/quote_unquote.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn is_unquote_call(expr: &Expression) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_object_to_ast_node` is never used
[INFO] [stdout]   --> src/evaluator/quote_unquote.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn convert_object_to_ast_node(obj: Object) -> Expression {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `new_enclosed_environment`, `get`, and `set` are never used
[INFO] [stdout]   --> src/object/environment.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Environment {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn new_enclosed_environment(outer: Rc<RefCell<Self>>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn get(&self, key: String) -> Option<Object> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn set(&mut self, key: String, val: Object) -> Object {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quote`, `Return`, `Fn`, and `Macro` are never constructed
[INFO] [stdout]   --> src/object/object.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Object {
[INFO] [stdout]    |          ------ variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 18 |     Quote(Expression),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 19 |     Null,
[INFO] [stdout] 20 |     Return(Box<Object>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 21 |     Err(String),
[INFO] [stdout] 22 |     Fn {
[INFO] [stdout]    |     ^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     Macro {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Object` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PROMPT` is never used
[INFO] [stdout]  --> src/repl/repl_interpreter.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const PROMPT: &str = ">> ";
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start` is never used
[INFO] [stdout]   --> src/repl/repl_interpreter.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn start() -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `stack_top` are never used
[INFO] [stdout]    --> src/vm/vm.rs:38:12
[INFO] [stdout]     |
[INFO] [stdout] 37  | impl Vm {
[INFO] [stdout]     | ------- associated items in this implementation
[INFO] [stdout] 38  |     pub fn new(bytecode: Bytecode) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn stack_top(&self) -> &Object {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compiler/symbol_table.rs:171:13
[INFO] [stdout]     |
[INFO] [stdout] 171 |         let mut global = Rc::new(RefCell::new(SymbolTable::new()));
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_macro_literal_parsing` is never used
[INFO] [stdout]     --> src/parser.rs:1452:8
[INFO] [stdout]      |
[INFO] [stdout] 1452 |     fn test_macro_literal_parsing() {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PROMPT` is never used
[INFO] [stdout]  --> src/repl/repl_interpreter.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const PROMPT: &str = ">> ";
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start` is never used
[INFO] [stdout]   --> src/repl/repl_interpreter.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn start() -> Result<()> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `stack_top` is never used
[INFO] [stdout]    --> src/vm/vm.rs:101:12
[INFO] [stdout]     |
[INFO] [stdout] 37  | impl Vm {
[INFO] [stdout]     | ------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn stack_top(&self) -> &Object {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler/compiler.rs:442:13
[INFO] [stdout]     |
[INFO] [stdout] 442 |             compiler.compile_program(program);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 442 |             let _ = compiler.compile_program(program);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.41s
[INFO] running `Command { std: "docker" "inspect" "ea1c1be8c62f4d5b64ef115c783a75821b233527a0ed1016c5a625b10d2e2bbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea1c1be8c62f4d5b64ef115c783a75821b233527a0ed1016c5a625b10d2e2bbc", kill_on_drop: false }`
[INFO] [stdout] ea1c1be8c62f4d5b64ef115c783a75821b233527a0ed1016c5a625b10d2e2bbc