[INFO] cloning repository https://github.com/fhools/salmon-interp-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fhools/salmon-interp-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffhools%2Fsalmon-interp-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffhools%2Fsalmon-interp-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a88d146d79e21ed6b528c9d68e36611e8e0bf952
[INFO] checking fhools/salmon-interp-rs against master#d14d202262d13df896b0c624b0cec6e4bfde631a for pr-143028
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffhools%2Fsalmon-interp-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] started tweaking git repo https://github.com/fhools/salmon-interp-rs
[INFO] finished tweaking git repo https://github.com/fhools/salmon-interp-rs
[INFO] tweaked toml for git repo https://github.com/fhools/salmon-interp-rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/fhools/salmon-interp-rs on toolchain d14d202262d13df896b0c624b0cec6e4bfde631a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d14d202262d13df896b0c624b0cec6e4bfde631a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/fhools/salmon-interp-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" "+d14d202262d13df896b0c624b0cec6e4bfde631a" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+d14d202262d13df896b0c624b0cec6e4bfde631a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2616ca69c842e168df53611f8625036e590985519deaa5f77550b0a9c4824ed0
[INFO] running `Command { std: "docker" "start" "-a" "2616ca69c842e168df53611f8625036e590985519deaa5f77550b0a9c4824ed0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2616ca69c842e168df53611f8625036e590985519deaa5f77550b0a9c4824ed0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2616ca69c842e168df53611f8625036e590985519deaa5f77550b0a9c4824ed0", kill_on_drop: false }`
[INFO] [stdout] 2616ca69c842e168df53611f8625036e590985519deaa5f77550b0a9c4824ed0
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+d14d202262d13df896b0c624b0cec6e4bfde631a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8d9049cf50fd38731e9524f6c8486cee4535a37297fd4404e39462cfed58b8b
[INFO] running `Command { std: "docker" "start" "-a" "e8d9049cf50fd38731e9524f6c8486cee4535a37297fd4404e39462cfed58b8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking salmon-interp-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]    --> src/expr.rs:520:22
[INFO] [stdout]     |
[INFO] [stdout] 520 |     use super::lex::{TokenType};
[INFO] [stdout]     |                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::SalmonInterp`
[INFO] [stdout]  --> src/lex.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::SalmonInterp;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Scanner` and `TokenType`
[INFO] [stdout]    --> src/lex.rs:391:17
[INFO] [stdout]     |
[INFO] [stdout] 391 |     use super::{Scanner, TokenType};
[INFO] [stdout]     |                 ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `gen_tokens`
[INFO] [stdout]    --> src/parser.rs:649:49
[INFO] [stdout]     |
[INFO] [stdout] 649 |     use super::super::lex::{Scanner, TokenType, gen_tokens};
[INFO] [stdout]     |                                                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `do_expr`
[INFO] [stdout]  --> src/interp.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::parser::{do_expr, Parser};
[INFO] [stdout]   |                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/interp.rs:659:9
[INFO] [stdout]     |
[INFO] [stdout] 659 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::SalmonInterp`
[INFO] [stdout]  --> src/lex.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::SalmonInterp;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/expr.rs:259:9
[INFO] [stdout]     |
[INFO] [stdout] 258 |         todo!("called call() on LoxInstance");
[INFO] [stdout]     |         ------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 259 |         Ok(LoxValue::Nil)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/expr.rs:259:9
[INFO] [stdout]     |
[INFO] [stdout] 258 |         todo!("called call() on LoxInstance");
[INFO] [stdout]     |         ------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 259 |         Ok(LoxValue::Nil)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/expr.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interp`
[INFO] [stdout]    --> src/expr.rs:238:20
[INFO] [stdout]     |
[INFO] [stdout] 238 |     fn call(&self, interp: &mut Interpreter, arguments: &Vec<LoxValue>) -> Result<LoxValue, RuntimeError> {
[INFO] [stdout]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_interp`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arguments`
[INFO] [stdout]    --> src/expr.rs:238:46
[INFO] [stdout]     |
[INFO] [stdout] 238 |     fn call(&self, interp: &mut Interpreter, arguments: &Vec<LoxValue>) -> Result<LoxValue, RuntimeError> {
[INFO] [stdout]     |                                              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interp`
[INFO] [stdout]    --> src/expr.rs:257:20
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn call(&self, interp: &mut Interpreter, arguments: &Vec<LoxValue>) -> Result<LoxValue, RuntimeError> {
[INFO] [stdout]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_interp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arguments`
[INFO] [stdout]    --> src/expr.rs:257:46
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn call(&self, interp: &mut Interpreter, arguments: &Vec<LoxValue>) -> Result<LoxValue, RuntimeError> {
[INFO] [stdout]     |                                              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logical_expr`
[INFO] [stdout]    --> src/expr.rs:421:31
[INFO] [stdout]     |
[INFO] [stdout] 421 |             ExprKind::Logical(logical_expr) => {
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `SetExpr`
[INFO] [stdout]    --> src/expr.rs:424:27
[INFO] [stdout]     |
[INFO] [stdout] 424 |             ExprKind::Set(SetExpr) => {String::new()},
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_SetExpr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ThisExpr`
[INFO] [stdout]    --> src/expr.rs:426:28
[INFO] [stdout]     |
[INFO] [stdout] 426 |             ExprKind::This(ThisExpr) => {"this".to_string()},
[INFO] [stdout]     |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ThisExpr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]    --> src/expr.rs:465:30
[INFO] [stdout]     |
[INFO] [stdout] 465 |     fn visit_stmt(&mut self, stmt: &Stmt) {
[INFO] [stdout]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logical_expr`
[INFO] [stdout]    --> src/expr.rs:481:31
[INFO] [stdout]     |
[INFO] [stdout] 481 |             ExprKind::Logical(logical_expr) => {
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `SetExpr`
[INFO] [stdout]    --> src/expr.rs:484:27
[INFO] [stdout]     |
[INFO] [stdout] 484 |             ExprKind::Set(SetExpr) => {},
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_SetExpr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ThisExpr`
[INFO] [stdout]    --> src/expr.rs:486:28
[INFO] [stdout]     |
[INFO] [stdout] 486 |             ExprKind::This(ThisExpr) => {},
[INFO] [stdout]     |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ThisExpr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `VariableExpr`
[INFO] [stdout]    --> src/expr.rs:488:32
[INFO] [stdout]     |
[INFO] [stdout] 488 |             ExprKind::Variable(VariableExpr) => {},
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_VariableExpr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/expr.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interp`
[INFO] [stdout]    --> src/expr.rs:238:20
[INFO] [stdout]     |
[INFO] [stdout] 238 |     fn call(&self, interp: &mut Interpreter, arguments: &Vec<LoxValue>) -> Result<LoxValue, RuntimeError> {
[INFO] [stdout]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_interp`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arguments`
[INFO] [stdout]    --> src/expr.rs:238:46
[INFO] [stdout]     |
[INFO] [stdout] 238 |     fn call(&self, interp: &mut Interpreter, arguments: &Vec<LoxValue>) -> Result<LoxValue, RuntimeError> {
[INFO] [stdout]     |                                              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `interp`
[INFO] [stdout]    --> src/expr.rs:257:20
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn call(&self, interp: &mut Interpreter, arguments: &Vec<LoxValue>) -> Result<LoxValue, RuntimeError> {
[INFO] [stdout]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_interp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arguments`
[INFO] [stdout]    --> src/expr.rs:257:46
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn call(&self, interp: &mut Interpreter, arguments: &Vec<LoxValue>) -> Result<LoxValue, RuntimeError> {
[INFO] [stdout]     |                                              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logical_expr`
[INFO] [stdout]    --> src/expr.rs:421:31
[INFO] [stdout]     |
[INFO] [stdout] 421 |             ExprKind::Logical(logical_expr) => {
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `SetExpr`
[INFO] [stdout]    --> src/expr.rs:424:27
[INFO] [stdout]     |
[INFO] [stdout] 424 |             ExprKind::Set(SetExpr) => {String::new()},
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_SetExpr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ThisExpr`
[INFO] [stdout]    --> src/expr.rs:426:28
[INFO] [stdout]     |
[INFO] [stdout] 426 |             ExprKind::This(ThisExpr) => {"this".to_string()},
[INFO] [stdout]     |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ThisExpr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]    --> src/expr.rs:465:30
[INFO] [stdout]     |
[INFO] [stdout] 465 |     fn visit_stmt(&mut self, stmt: &Stmt) {
[INFO] [stdout]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logical_expr`
[INFO] [stdout]    --> src/expr.rs:481:31
[INFO] [stdout]     |
[INFO] [stdout] 481 |             ExprKind::Logical(logical_expr) => {
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `SetExpr`
[INFO] [stdout]    --> src/expr.rs:484:27
[INFO] [stdout]     |
[INFO] [stdout] 484 |             ExprKind::Set(SetExpr) => {},
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_SetExpr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ThisExpr`
[INFO] [stdout]    --> src/expr.rs:486:28
[INFO] [stdout]     |
[INFO] [stdout] 486 |             ExprKind::This(ThisExpr) => {},
[INFO] [stdout]     |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ThisExpr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `VariableExpr`
[INFO] [stdout]    --> src/expr.rs:488:32
[INFO] [stdout]     |
[INFO] [stdout] 488 |             ExprKind::Variable(VariableExpr) => {},
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_VariableExpr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interp.rs:213:21
[INFO] [stdout]     |
[INFO] [stdout] 213 |                 let mut loxclass_rc = Rc::new(RefCell::new(loxclass));
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/interp.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let mut env: &mut Environment = self.environments.get_mut(this_env).unwrap();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logical_expr`
[INFO] [stdout]    --> src/interp.rs:491:31
[INFO] [stdout]     |
[INFO] [stdout] 491 |             ExprKind::Logical(logical_expr) => self.visit_logical_expr(expr),
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interp.rs:647:13
[INFO] [stdout]     |
[INFO] [stdout] 647 |         let mut cursor_buff = Cursor::new(Vec::new());
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `TokenType` is more private than the item `lex::Token::token_type`
[INFO] [stdout]   --> src/lex.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub token_type: TokenType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ field `lex::Token::token_type` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `TokenType` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/lex.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub(crate) enum TokenType {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `TokenType` is more private than the item `lex::Token::new`
[INFO] [stdout]    --> src/lex.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn new(token_type: TokenType, lexeme: String, line: usize) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `lex::Token::new` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `TokenType` is only usable at visibility `pub(crate)`
[INFO] [stdout]    --> src/lex.rs:9:1
[INFO] [stdout]     |
[INFO] [stdout] 9   | pub(crate) enum TokenType {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/parser.rs:667:13
[INFO] [stdout]     |
[INFO] [stdout] 667 |         let t = parser.peek();
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `print_output`
[INFO] [stdout]    --> src/parser.rs:683:17
[INFO] [stdout]     |
[INFO] [stdout] 683 |             let print_output  = expr.as_ref().map(|e| {
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_print_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lox_num` is never used
[INFO] [stdout]    --> src/expr.rs:522:8
[INFO] [stdout]     |
[INFO] [stdout] 522 |     fn lox_num(n: f32) -> LoxValue {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `parse`, `parse_program`, and `clear_need_sync` are never used
[INFO] [stdout]    --> src/parser.rs:115:12
[INFO] [stdout]     |
[INFO] [stdout] 16  | impl Parser {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 115 |     pub fn parse(&mut self) -> Result<Vec<Stmt>, ParseError> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 121 |     fn parse_program(&mut self) -> Vec<Stmt> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 629 |     fn clear_need_sync(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_tokens` is never used
[INFO] [stdout]    --> src/parser.rs:652:8
[INFO] [stdout]     |
[INFO] [stdout] 652 |     fn create_tokens() -> Vec<Token> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num_tok` is never used
[INFO] [stdout]    --> src/parser.rs:657:8
[INFO] [stdout]     |
[INFO] [stdout] 657 |     fn num_tok(n: f32) -> Token {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `evaluate_expr` is never used
[INFO] [stdout]    --> src/interp.rs:619:4
[INFO] [stdout]     |
[INFO] [stdout] 619 | fn evaluate_expr(expr: &Expr) -> Result<LoxValue, RuntimeError> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LoxInterpreter` is never constructed
[INFO] [stdout]    --> src/interp.rs:632:8
[INFO] [stdout]     |
[INFO] [stdout] 632 | struct LoxInterpreter{}
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `interpret` and `interpret_capture_output` are never used
[INFO] [stdout]    --> src/interp.rs:635:8
[INFO] [stdout]     |
[INFO] [stdout] 634 | impl LoxInterpreter {
[INFO] [stdout]     | ------------------- methods in this implementation
[INFO] [stdout] 635 |     fn interpret(&mut self, source: &str) -> Result<LoxValue, RuntimeError> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 644 |     fn interpret_capture_output(&mut self, source: &str) -> Result<String, RuntimeError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `print_output`
[INFO] [stdout]    --> src/parser.rs:695:17
[INFO] [stdout]     |
[INFO] [stdout] 695 |             let print_output  = expr.as_ref().map(|e| {
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_print_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr.rs:177:13
[INFO] [stdout]     |
[INFO] [stdout] 177 |             interp.define(&self.function.params.get(i).unwrap().lexeme, call_env, arg.clone());
[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] 177 |             let _ = interp.define(&self.function.params.get(i).unwrap().lexeme, call_env, arg.clone());
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr.rs:221:13
[INFO] [stdout]     |
[INFO] [stdout] 221 |             interp.define("this", bound_env_id, LoxValue::Instance(instance));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 221 |             let _ = interp.define("this", bound_env_id, LoxValue::Instance(instance));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `SetExpr` should have a snake case name
[INFO] [stdout]    --> src/expr.rs:424:27
[INFO] [stdout]     |
[INFO] [stdout] 424 |             ExprKind::Set(SetExpr) => {String::new()},
[INFO] [stdout]     |                           ^^^^^^^ help: convert the identifier to snake case: `set_expr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ThisExpr` should have a snake case name
[INFO] [stdout]    --> src/expr.rs:426:28
[INFO] [stdout]     |
[INFO] [stdout] 426 |             ExprKind::This(ThisExpr) => {"this".to_string()},
[INFO] [stdout]     |                            ^^^^^^^^ help: convert the identifier to snake case: `this_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `SetExpr` should have a snake case name
[INFO] [stdout]    --> src/expr.rs:484:27
[INFO] [stdout]     |
[INFO] [stdout] 484 |             ExprKind::Set(SetExpr) => {},
[INFO] [stdout]     |                           ^^^^^^^ help: convert the identifier to snake case: `set_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ThisExpr` should have a snake case name
[INFO] [stdout]    --> src/expr.rs:486:28
[INFO] [stdout]     |
[INFO] [stdout] 486 |             ExprKind::This(ThisExpr) => {},
[INFO] [stdout]     |                            ^^^^^^^^ help: convert the identifier to snake case: `this_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `VariableExpr` should have a snake case name
[INFO] [stdout]    --> src/expr.rs:488:32
[INFO] [stdout]     |
[INFO] [stdout] 488 |             ExprKind::Variable(VariableExpr) => {},
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: convert the identifier to snake case: `variable_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         self.consume(&LoxToken![LeftBrace], "expecting '{{' before class body");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let _ = self.consume(&LoxToken![LeftBrace], "expecting '{{' before class body");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         self.consume(&LoxToken![RightBrace], "expected '}' after class body ");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 177 |         let _ = self.consume(&LoxToken![RightBrace], "expected '}' after class body ");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         self.consume(&LoxToken![LeftParen], &format!("expecting '(' after {} name", kind)); 
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 188 |         let _ = self.consume(&LoxToken![LeftParen], &format!("expecting '(' after {} name", kind)); 
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:202:9
[INFO] [stdout]     |
[INFO] [stdout] 202 |         self.consume(&LoxToken![RightParen], "expecting ')' after parameters");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let _ = self.consume(&LoxToken![RightParen], "expecting ')' after parameters");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 203 |         self.consume(&LoxToken![LeftBrace], &format!("expecting '{{' before {} body", kind));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let _ = self.consume(&LoxToken![LeftBrace], &format!("expecting '{{' before {} body", kind));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:256:9
[INFO] [stdout]     |
[INFO] [stdout] 256 |         self.consume(&LoxToken![LeftParen], "expected '(' following 'if'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 256 |         let _ = self.consume(&LoxToken![LeftParen], "expected '(' following 'if'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:258:9
[INFO] [stdout]     |
[INFO] [stdout] 258 |         self.consume(&LoxToken![RightParen], "expected ')' following if condtional");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 258 |         let _ = self.consume(&LoxToken![RightParen], "expected ')' following if condtional");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:269:9
[INFO] [stdout]     |
[INFO] [stdout] 269 |         self.consume(&LoxToken![LeftParen], "expected '(' following 'while'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 269 |         let _ = self.consume(&LoxToken![LeftParen], "expected '(' following 'while'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:271:9
[INFO] [stdout]     |
[INFO] [stdout] 271 |         self.consume(&LoxToken![RightParen], "expected ')' following 'while'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 271 |         let _ = self.consume(&LoxToken![RightParen], "expected ')' following 'while'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:283:9
[INFO] [stdout]     |
[INFO] [stdout] 283 |         self.consume(&LoxToken![LeftParen], "expected '(' following 'for'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 283 |         let _ = self.consume(&LoxToken![LeftParen], "expected '(' following 'for'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         self.consume(&LoxToken![Semicolon], "expected ';' after condition for 'for'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 305 |         let _ = self.consume(&LoxToken![Semicolon], "expected ';' after condition for 'for'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:312:9
[INFO] [stdout]     |
[INFO] [stdout] 312 |         self.consume(&LoxToken![RightParen], "expected ')' following for clause");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 312 |         let _ = self.consume(&LoxToken![RightParen], "expected ')' following for clause");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:339:9
[INFO] [stdout]     |
[INFO] [stdout] 339 |         self.consume(&LoxToken![RightBrace], "expected right brace closing block");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 339 |         let _ = self.consume(&LoxToken![RightBrace], "expected right brace closing block");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:359:9
[INFO] [stdout]     |
[INFO] [stdout] 359 |         self.consume(&LoxToken![Semicolon], "expect ';' after return expression");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 359 |         let _ = self.consume(&LoxToken![Semicolon], "expect ';' after return expression");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 self.define(&function_stmt.name.lexeme, self.cur_env, loxval);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 let _ = self.define(&function_stmt.name.lexeme, self.cur_env, loxval);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:201:17
[INFO] [stdout]     |
[INFO] [stdout] 201 |                 self.define(&class_stmt.name.lexeme, self.cur_env, loxval);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 201 |                 let _ = self.define(&class_stmt.name.lexeme, self.cur_env, loxval);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:215:17
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 self.define(&class_stmt.name.lexeme, self.cur_env, LoxValue::Class(loxclass_rc));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 let _ = self.define(&class_stmt.name.lexeme, self.cur_env, LoxValue::Class(loxclass_rc));
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:652:9
[INFO] [stdout]     |
[INFO] [stdout] 652 |         interpreter.interpret(&stmts);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 652 |         let _ = interpreter.interpret(&stmts);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interp.rs:213:21
[INFO] [stdout]     |
[INFO] [stdout] 213 |                 let mut loxclass_rc = Rc::new(RefCell::new(loxclass));
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/interp.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let mut env: &mut Environment = self.environments.get_mut(this_env).unwrap();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logical_expr`
[INFO] [stdout]    --> src/interp.rs:491:31
[INFO] [stdout]     |
[INFO] [stdout] 491 |             ExprKind::Logical(logical_expr) => self.visit_logical_expr(expr),
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interp.rs:647:13
[INFO] [stdout]     |
[INFO] [stdout] 647 |         let mut cursor_buff = Cursor::new(Vec::new());
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `TokenType` is more private than the item `lex::Token::token_type`
[INFO] [stdout]   --> src/lex.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub token_type: TokenType,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ field `lex::Token::token_type` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `TokenType` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/lex.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub(crate) enum TokenType {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `TokenType` is more private than the item `lex::Token::new`
[INFO] [stdout]    --> src/lex.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn new(token_type: TokenType, lexeme: String, line: usize) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `lex::Token::new` is reachable at visibility `pub`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `TokenType` is only usable at visibility `pub(crate)`
[INFO] [stdout]    --> src/lex.rs:9:1
[INFO] [stdout]     |
[INFO] [stdout] 9   | pub(crate) enum TokenType {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `clear_need_sync` is never used
[INFO] [stdout]    --> src/parser.rs:629:8
[INFO] [stdout]     |
[INFO] [stdout] 16  | impl Parser {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 629 |     fn clear_need_sync(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr.rs:177:13
[INFO] [stdout]     |
[INFO] [stdout] 177 |             interp.define(&self.function.params.get(i).unwrap().lexeme, call_env, arg.clone());
[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] 177 |             let _ = interp.define(&self.function.params.get(i).unwrap().lexeme, call_env, arg.clone());
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/expr.rs:221:13
[INFO] [stdout]     |
[INFO] [stdout] 221 |             interp.define("this", bound_env_id, LoxValue::Instance(instance));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 221 |             let _ = interp.define("this", bound_env_id, LoxValue::Instance(instance));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `SetExpr` should have a snake case name
[INFO] [stdout]    --> src/expr.rs:424:27
[INFO] [stdout]     |
[INFO] [stdout] 424 |             ExprKind::Set(SetExpr) => {String::new()},
[INFO] [stdout]     |                           ^^^^^^^ help: convert the identifier to snake case: `set_expr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ThisExpr` should have a snake case name
[INFO] [stdout]    --> src/expr.rs:426:28
[INFO] [stdout]     |
[INFO] [stdout] 426 |             ExprKind::This(ThisExpr) => {"this".to_string()},
[INFO] [stdout]     |                            ^^^^^^^^ help: convert the identifier to snake case: `this_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `SetExpr` should have a snake case name
[INFO] [stdout]    --> src/expr.rs:484:27
[INFO] [stdout]     |
[INFO] [stdout] 484 |             ExprKind::Set(SetExpr) => {},
[INFO] [stdout]     |                           ^^^^^^^ help: convert the identifier to snake case: `set_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `ThisExpr` should have a snake case name
[INFO] [stdout]    --> src/expr.rs:486:28
[INFO] [stdout]     |
[INFO] [stdout] 486 |             ExprKind::This(ThisExpr) => {},
[INFO] [stdout]     |                            ^^^^^^^^ help: convert the identifier to snake case: `this_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `VariableExpr` should have a snake case name
[INFO] [stdout]    --> src/expr.rs:488:32
[INFO] [stdout]     |
[INFO] [stdout] 488 |             ExprKind::Variable(VariableExpr) => {},
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: convert the identifier to snake case: `variable_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         self.consume(&LoxToken![LeftBrace], "expecting '{{' before class body");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let _ = self.consume(&LoxToken![LeftBrace], "expecting '{{' before class body");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         self.consume(&LoxToken![RightBrace], "expected '}' after class body ");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 177 |         let _ = self.consume(&LoxToken![RightBrace], "expected '}' after class body ");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         self.consume(&LoxToken![LeftParen], &format!("expecting '(' after {} name", kind)); 
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 188 |         let _ = self.consume(&LoxToken![LeftParen], &format!("expecting '(' after {} name", kind)); 
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:202:9
[INFO] [stdout]     |
[INFO] [stdout] 202 |         self.consume(&LoxToken![RightParen], "expecting ')' after parameters");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let _ = self.consume(&LoxToken![RightParen], "expecting ')' after parameters");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 203 |         self.consume(&LoxToken![LeftBrace], &format!("expecting '{{' before {} body", kind));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let _ = self.consume(&LoxToken![LeftBrace], &format!("expecting '{{' before {} body", kind));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:256:9
[INFO] [stdout]     |
[INFO] [stdout] 256 |         self.consume(&LoxToken![LeftParen], "expected '(' following 'if'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 256 |         let _ = self.consume(&LoxToken![LeftParen], "expected '(' following 'if'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:258:9
[INFO] [stdout]     |
[INFO] [stdout] 258 |         self.consume(&LoxToken![RightParen], "expected ')' following if condtional");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 258 |         let _ = self.consume(&LoxToken![RightParen], "expected ')' following if condtional");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:269:9
[INFO] [stdout]     |
[INFO] [stdout] 269 |         self.consume(&LoxToken![LeftParen], "expected '(' following 'while'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 269 |         let _ = self.consume(&LoxToken![LeftParen], "expected '(' following 'while'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:271:9
[INFO] [stdout]     |
[INFO] [stdout] 271 |         self.consume(&LoxToken![RightParen], "expected ')' following 'while'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 271 |         let _ = self.consume(&LoxToken![RightParen], "expected ')' following 'while'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:283:9
[INFO] [stdout]     |
[INFO] [stdout] 283 |         self.consume(&LoxToken![LeftParen], "expected '(' following 'for'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 283 |         let _ = self.consume(&LoxToken![LeftParen], "expected '(' following 'for'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         self.consume(&LoxToken![Semicolon], "expected ';' after condition for 'for'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 305 |         let _ = self.consume(&LoxToken![Semicolon], "expected ';' after condition for 'for'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:312:9
[INFO] [stdout]     |
[INFO] [stdout] 312 |         self.consume(&LoxToken![RightParen], "expected ')' following for clause");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 312 |         let _ = self.consume(&LoxToken![RightParen], "expected ')' following for clause");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:339:9
[INFO] [stdout]     |
[INFO] [stdout] 339 |         self.consume(&LoxToken![RightBrace], "expected right brace closing block");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 339 |         let _ = self.consume(&LoxToken![RightBrace], "expected right brace closing block");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:359:9
[INFO] [stdout]     |
[INFO] [stdout] 359 |         self.consume(&LoxToken![Semicolon], "expect ';' after return expression");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 359 |         let _ = self.consume(&LoxToken![Semicolon], "expect ';' after return expression");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 self.define(&function_stmt.name.lexeme, self.cur_env, loxval);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 let _ = self.define(&function_stmt.name.lexeme, self.cur_env, loxval);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:201:17
[INFO] [stdout]     |
[INFO] [stdout] 201 |                 self.define(&class_stmt.name.lexeme, self.cur_env, loxval);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 201 |                 let _ = self.define(&class_stmt.name.lexeme, self.cur_env, loxval);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:215:17
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 self.define(&class_stmt.name.lexeme, self.cur_env, LoxValue::Class(loxclass_rc));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 let _ = self.define(&class_stmt.name.lexeme, self.cur_env, LoxValue::Class(loxclass_rc));
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:652:9
[INFO] [stdout]     |
[INFO] [stdout] 652 |         interpreter.interpret(&stmts);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 652 |         let _ = interpreter.interpret(&stmts);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:719:9
[INFO] [stdout]     |
[INFO] [stdout] 719 | /         do_interpreter.interpret(
[INFO] [stdout] 720 | |             r"print 1 + 2;
[INFO] [stdout] 721 | |               print 4 + 6;
[INFO] [stdout] 722 | |               print 10 + 5;
[INFO] [stdout] 723 | |               ",
[INFO] [stdout] 724 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 719 |         let _ = do_interpreter.interpret(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:732:9
[INFO] [stdout]     |
[INFO] [stdout] 732 | /         do_interpreter.interpret(
[INFO] [stdout] 733 | |             r"var a = 10;
[INFO] [stdout] 734 | |               var b = a + 12;
[INFO] [stdout] 735 | |               var c;
[INFO] [stdout] ...   |
[INFO] [stdout] 740 | |               ",
[INFO] [stdout] 741 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 732 |         let _ = do_interpreter.interpret(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interp.rs:747:9
[INFO] [stdout]     |
[INFO] [stdout] 747 | /         do_interpreter.interpret(
[INFO] [stdout] 748 | |             r"var a = true;
[INFO] [stdout] 749 | |               print a;
[INFO] [stdout] ...   |
[INFO] [stdout] 755 | |               ",
[INFO] [stdout] 756 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 747 |         let _ = do_interpreter.interpret(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `interp::SalmonInterp`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use interp::SalmonInterp; 
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `interp::SalmonInterp`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use interp::SalmonInterp; 
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.45s
[INFO] running `Command { std: "docker" "inspect" "e8d9049cf50fd38731e9524f6c8486cee4535a37297fd4404e39462cfed58b8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8d9049cf50fd38731e9524f6c8486cee4535a37297fd4404e39462cfed58b8b", kill_on_drop: false }`
[INFO] [stdout] e8d9049cf50fd38731e9524f6c8486cee4535a37297fd4404e39462cfed58b8b