[INFO] cloning repository https://github.com/bluretrece/lox_port
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bluretrece/lox_port" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluretrece%2Flox_port", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluretrece%2Flox_port'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 184a7157004dcc0f0e30381ed0141b0e27df5677
[INFO] checking bluretrece/lox_port against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluretrece%2Flox_port" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bluretrece/lox_port on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bluretrece/lox_port
[INFO] finished tweaking git repo https://github.com/bluretrece/lox_port
[INFO] tweaked toml for git repo https://github.com/bluretrece/lox_port written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/bluretrece/lox_port already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48a97d889042fba1e1f40512cb0216b16648c007be911e7b20ac348393b14de8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "48a97d889042fba1e1f40512cb0216b16648c007be911e7b20ac348393b14de8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48a97d889042fba1e1f40512cb0216b16648c007be911e7b20ac348393b14de8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48a97d889042fba1e1f40512cb0216b16648c007be911e7b20ac348393b14de8", kill_on_drop: false }`
[INFO] [stdout] 48a97d889042fba1e1f40512cb0216b16648c007be911e7b20ac348393b14de8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 316c18a7917c5e7546b50c0961d581d0986eeada5b5f46fc78fd2a205f5cc04b
[INFO] running `Command { std: "docker" "start" "-a" "316c18a7917c5e7546b50c0961d581d0986eeada5b5f46fc78fd2a205f5cc04b", kill_on_drop: false }`
[INFO] [stderr]     Checking lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::lox_error::*`
[INFO] [stdout]  --> src/environment.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::lox_error::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::expression`
[INFO] [stdout]  --> src/expression.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::expression;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/expression.rs:89:36
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn accept(&self, visitor: &mut ExprVisitor<Value = Object>) -> Result<Object, LoxError>;
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ExprVisitor<Value = Object>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/expression.rs:94:33
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn accept(&self, expr: &mut ExprVisitor<Value=Object>) -> Result<Object, LoxError> {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ExprVisitor<Value=Object>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Neg`, `Not`
[INFO] [stdout]  --> src/object.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Add, Div, Mul, Neg, Not, Sub};
[INFO] [stdout]   |                               ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::object::*`
[INFO] [stdout]  --> src/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::object::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/parser.rs:406:9
[INFO] [stdout]     |
[INFO] [stdout] 406 | /         /// a primary expression is reached.
[INFO] [stdout] 407 | |         /// where
[INFO] [stdout] 408 | |         /// primary → NUMBER | STRING | "false" | "true" | "nil"
[INFO] [stdout] 409 | |         ///         | "(" expression ")" ;
[INFO] [stdout]     | |__________________________________________^
[INFO] [stdout] 410 |           self.primary()
[INFO] [stdout]     |           -------------- rustdoc does not generate documentation for expressions
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lox_error::*`
[INFO] [stdout]  --> src/statement.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lox_error::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/statement.rs:65:33
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn accept(&self, expr: &mut StmtVisitor<Value = Object>) -> Option<Object>;
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StmtVisitor<Value = Object>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/statement.rs:69:36
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn accept(&self, visitor: &mut StmtVisitor<Value = Object>) -> Option<Object> {
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StmtVisitor<Value = Object>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LEFT_PAREN` should have an upper camel case name
[INFO] [stdout]  --> src/token_type.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     LEFT_PAREN,
[INFO] [stdout]   |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `LeftParen`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `RIGHT_PAREN` should have an upper camel case name
[INFO] [stdout]  --> src/token_type.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     RIGHT_PAREN,
[INFO] [stdout]   |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `RightParen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LEFT_BRACE` should have an upper camel case name
[INFO] [stdout]  --> src/token_type.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     LEFT_BRACE,
[INFO] [stdout]   |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `LeftBrace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `RIGHT_BRACE` should have an upper camel case name
[INFO] [stdout]  --> src/token_type.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     RIGHT_BRACE,
[INFO] [stdout]   |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `RightBrace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `BANG_EQUAL` should have an upper camel case name
[INFO] [stdout]   --> src/token_type.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     BANG_EQUAL,
[INFO] [stdout]    |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `BangEqual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `EQUAL_EQUAL` should have an upper camel case name
[INFO] [stdout]   --> src/token_type.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     EQUAL_EQUAL,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `EqualEqual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `GREATER_EQUAL` should have an upper camel case name
[INFO] [stdout]   --> src/token_type.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     GREATER_EQUAL,
[INFO] [stdout]    |     ^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `GreaterEqual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LESS_EQUAL` should have an upper camel case name
[INFO] [stdout]   --> src/token_type.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     LESS_EQUAL,
[INFO] [stdout]    |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `LessEqual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `literal::*`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use literal::*;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parser::*`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use parser::*;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::fmt;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::*`
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use token::*;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lox_error::*`
[INFO] [stdout]  --> src/environment.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::lox_error::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::expression`
[INFO] [stdout]  --> src/expression.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::expression;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/expression.rs:89:36
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn accept(&self, visitor: &mut ExprVisitor<Value = Object>) -> Result<Object, LoxError>;
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ExprVisitor<Value = Object>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/expression.rs:94:33
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn accept(&self, expr: &mut ExprVisitor<Value=Object>) -> Result<Object, LoxError> {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ExprVisitor<Value=Object>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Neg`, `Not`
[INFO] [stdout]  --> src/object.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::{Add, Div, Mul, Neg, Not, Sub};
[INFO] [stdout]   |                               ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::object::*`
[INFO] [stdout]  --> src/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::object::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/parser.rs:406:9
[INFO] [stdout]     |
[INFO] [stdout] 406 | /         /// a primary expression is reached.
[INFO] [stdout] 407 | |         /// where
[INFO] [stdout] 408 | |         /// primary → NUMBER | STRING | "false" | "true" | "nil"
[INFO] [stdout] 409 | |         ///         | "(" expression ")" ;
[INFO] [stdout]     | |__________________________________________^
[INFO] [stdout] 410 |           self.primary()
[INFO] [stdout]     |           -------------- rustdoc does not generate documentation for expressions
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lox_error::*`
[INFO] [stdout]  --> src/statement.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lox_error::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/statement.rs:65:33
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn accept(&self, expr: &mut StmtVisitor<Value = Object>) -> Option<Object>;
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StmtVisitor<Value = Object>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/statement.rs:69:36
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn accept(&self, visitor: &mut StmtVisitor<Value = Object>) -> Option<Object> {
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StmtVisitor<Value = Object>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LEFT_PAREN` should have an upper camel case name
[INFO] [stdout]  --> src/token_type.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     LEFT_PAREN,
[INFO] [stdout]   |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `LeftParen`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `RIGHT_PAREN` should have an upper camel case name
[INFO] [stdout]  --> src/token_type.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     RIGHT_PAREN,
[INFO] [stdout]   |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `RightParen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LEFT_BRACE` should have an upper camel case name
[INFO] [stdout]  --> src/token_type.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     LEFT_BRACE,
[INFO] [stdout]   |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `LeftBrace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `RIGHT_BRACE` should have an upper camel case name
[INFO] [stdout]  --> src/token_type.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     RIGHT_BRACE,
[INFO] [stdout]   |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `RightBrace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `BANG_EQUAL` should have an upper camel case name
[INFO] [stdout]   --> src/token_type.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     BANG_EQUAL,
[INFO] [stdout]    |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `BangEqual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `EQUAL_EQUAL` should have an upper camel case name
[INFO] [stdout]   --> src/token_type.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     EQUAL_EQUAL,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `EqualEqual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `GREATER_EQUAL` should have an upper camel case name
[INFO] [stdout]   --> src/token_type.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     GREATER_EQUAL,
[INFO] [stdout]    |     ^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `GreaterEqual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LESS_EQUAL` should have an upper camel case name
[INFO] [stdout]   --> src/token_type.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     LESS_EQUAL,
[INFO] [stdout]    |     ^^^^^^^^^^ help: convert the identifier to upper camel case: `LessEqual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parser::*`
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use parser::*;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::fmt;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lox_error::*`
[INFO] [stdout]   --> src/main.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     use crate::lox_error::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::scanner`
[INFO] [stdout]   --> src/main.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |     use crate::scanner;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::statement::*`
[INFO] [stdout]   --> src/main.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     use crate::statement::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token_type::*`
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | use token_type::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let mut input = "(+);".to_string();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expression`
[INFO] [stdout]   --> src/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let mut expression = parser.expression();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/interpreter.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         stmt: &Statement,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/interpreter.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/interpreter.rs:165:9
[INFO] [stdout]     |
[INFO] [stdout] 165 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/interpreter.rs:173:9
[INFO] [stdout]     |
[INFO] [stdout] 173 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/parser.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |             let mut expr = Expr::Logical {
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/parser.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |             let mut expr = Expr::Logical {
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `equals`
[INFO] [stdout]   --> src/parser.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |             let mut equals = self.previous();
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_equals`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/parser.rs:451:54
[INFO] [stdout]     |
[INFO] [stdout] 451 |     pub fn consume(&mut self, token_type: TokenType, message: String) -> Result<Token, LoxError> {
[INFO] [stdout]     |                                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let mut input = "(+);".to_string();
[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/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let mut expression = parser.expression();
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut left_expr = self.evaluate(left).unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let mut value = self.evaluate(expr)?;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |         let mut left = self.evaluate(left)?;
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut right = self.evaluate(right)?;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 |         let mut previous = Rc::clone(&self.environment);
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let mut input = "(+);".to_string();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expression`
[INFO] [stdout]   --> src/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let mut expression = parser.expression();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]   --> src/interpreter.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         stmt: &Statement,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/interpreter.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/interpreter.rs:165:9
[INFO] [stdout]     |
[INFO] [stdout] 165 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/interpreter.rs:173:9
[INFO] [stdout]     |
[INFO] [stdout] 173 |         expr: &Expr,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/parser.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |             let mut expr = Expr::Logical {
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/parser.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |             let mut expr = Expr::Logical {
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `equals`
[INFO] [stdout]   --> src/parser.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |             let mut equals = self.previous();
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_equals`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]    --> src/parser.rs:451:54
[INFO] [stdout]     |
[INFO] [stdout] 451 |     pub fn consume(&mut self, token_type: TokenType, message: String) -> Result<Token, LoxError> {
[INFO] [stdout]     |                                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let mut input = "(+);".to_string();
[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/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let mut expression = parser.expression();
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/literal.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 let mut x = n.to_string();
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let mut input = "(+);".to_string();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut input = "/".to_string();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:184:13
[INFO] [stdout]     |
[INFO] [stdout] 184 |         let mut input = "1+2".to_string();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let mut expr = self.and()?;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |             let mut operator = self.previous();
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |             let mut right = self.and()?;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |             let mut expr = Expr::Logical {
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut expr = self.equality()?;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |             let mut operator = self.previous();
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut right = self.equality()?;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |             let mut expr = Expr::Logical {
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut expr = self.or()?;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |             let mut equals = self.previous();
[INFO] [stdout]    |                 ----^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |             let mut value = self.assignment()?;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let mut condition = self.expression()?;
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:261:13
[INFO] [stdout]     |
[INFO] [stdout] 261 |         let mut else_branch = if self.if_match(&[TokenType::ELSE]) {
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:289:13
[INFO] [stdout]     |
[INFO] [stdout] 289 |         let mut expr = self.expression()?;
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut left_expr = self.evaluate(left).unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let mut value = self.evaluate(expr)?;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |         let mut left = self.evaluate(left)?;
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut right = self.evaluate(right)?;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 |         let mut previous = Rc::clone(&self.environment);
[INFO] [stdout]     |             ----^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/scanner.rs:127:35
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let text = self.source[self.start..self.current].trim();
[INFO] [stdout]     |                    ----------- immutable borrow occurs here
[INFO] [stdout] 126 |         
[INFO] [stdout] 127 |         if let Some(token_type) = self.match_identifier(text.to_string()) {
[INFO] [stdout]     |                                   ^^^^                  ---- immutable borrow later used here
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/literal.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |                 let mut x = n.to_string();
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let mut expr = self.and()?;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |             let mut operator = self.previous();
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |             let mut right = self.and()?;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |             let mut expr = Expr::Logical {
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut expr = self.equality()?;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_file`
[INFO] [stdout]   --> src/main.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn run_file(file: &String) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |             let mut operator = self.previous();
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_prompt`
[INFO] [stdout]   --> src/main.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn run_prompt() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/main.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn run(source: &String) -> Result<(), String> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |             let mut right = self.equality()?;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |             let mut expr = Expr::Logical {
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut expr = self.or()?;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |             let mut equals = self.previous();
[INFO] [stdout]    |                 ----^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |             let mut value = self.assignment()?;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let mut condition = self.expression()?;
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:261:13
[INFO] [stdout]     |
[INFO] [stdout] 261 |         let mut else_branch = if self.if_match(&[TokenType::ELSE]) {
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:289:13
[INFO] [stdout]     |
[INFO] [stdout] 289 |         let mut expr = self.expression()?;
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/scanner.rs:127:35
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let text = self.source[self.start..self.current].trim();
[INFO] [stdout]     |                    ----------- immutable borrow occurs here
[INFO] [stdout] 126 |         
[INFO] [stdout] 127 |         if let Some(token_type) = self.match_identifier(text.to_string()) {
[INFO] [stdout]     |                                   ^^^^                  ---- immutable borrow later used here
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_file`
[INFO] [stdout]   --> src/main.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn run_file(file: &String) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_prompt`
[INFO] [stdout]   --> src/main.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn run_prompt() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/main.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn run(source: &String) -> Result<(), String> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     run(&bytes);
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         stdout.flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         run(&source);
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/interpreter.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         self.evaluate(expression);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 | /         self.consume(
[INFO] [stdout] 124 | |             TokenType::SEMICOLON,
[INFO] [stdout] 125 | |             String::from("Expect ';' after variable declaration"),
[INFO] [stdout] 126 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 | /         self.consume(
[INFO] [stdout] 138 | |             TokenType::SEMICOLON,
[INFO] [stdout] 139 | |             String::from("Expect ';' after value."),
[INFO] [stdout] 140 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         self.consume(TokenType::LEFT_PAREN, String::from("Expect ( after while statement"));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |         self.consume(TokenType::RIGHT_PAREN, String::from("Expect ) after while statement"));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         self.consume(TokenType::LEFT_PAREN, String::from("Expect ( for ."));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:178:9
[INFO] [stdout]     |
[INFO] [stdout] 178 |         self.consume(TokenType::SEMICOLON, String::from("Expec ; after loop"));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |         self.consume(TokenType::RIGHT_PAREN, String::from("Expect ) after for clauses."));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 | /         self.consume(
[INFO] [stdout] 248 | |             TokenType::LEFT_PAREN,
[INFO] [stdout] 249 | |             String::from("Expect '(' after 'if' keyword."),
[INFO] [stdout] 250 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 254 | /         self.consume(
[INFO] [stdout] 255 | |             TokenType::RIGHT_PAREN,
[INFO] [stdout] 256 | |             String::from("Expect ')' after 'if' condition."),
[INFO] [stdout] 257 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:280:9
[INFO] [stdout]     |
[INFO] [stdout] 280 | /         self.consume(
[INFO] [stdout] 281 | |             TokenType::RIGHT_BRACE,
[INFO] [stdout] 282 | |             String::from("Expect '}' after block."),
[INFO] [stdout] 283 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:291:9
[INFO] [stdout]     |
[INFO] [stdout] 291 | /         self.consume(
[INFO] [stdout] 292 | |             TokenType::SEMICOLON,
[INFO] [stdout] 293 | |             String::from("Expect ';' after expression"),
[INFO] [stdout] 294 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:444:13
[INFO] [stdout]     |
[INFO] [stdout] 444 |             self.consume(TokenType::RIGHT_PAREN, String::from("Expected ')'"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     run(&bytes);
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         stdout.flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         run(&source);
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/interpreter.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         self.evaluate(expression);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 | /         self.consume(
[INFO] [stdout] 124 | |             TokenType::SEMICOLON,
[INFO] [stdout] 125 | |             String::from("Expect ';' after variable declaration"),
[INFO] [stdout] 126 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 | /         self.consume(
[INFO] [stdout] 138 | |             TokenType::SEMICOLON,
[INFO] [stdout] 139 | |             String::from("Expect ';' after value."),
[INFO] [stdout] 140 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         self.consume(TokenType::LEFT_PAREN, String::from("Expect ( after while statement"));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |         self.consume(TokenType::RIGHT_PAREN, String::from("Expect ) after while statement"));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         self.consume(TokenType::LEFT_PAREN, String::from("Expect ( for ."));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:178:9
[INFO] [stdout]     |
[INFO] [stdout] 178 |         self.consume(TokenType::SEMICOLON, String::from("Expec ; after loop"));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 186 |         self.consume(TokenType::RIGHT_PAREN, String::from("Expect ) after for clauses."));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 | /         self.consume(
[INFO] [stdout] 248 | |             TokenType::LEFT_PAREN,
[INFO] [stdout] 249 | |             String::from("Expect '(' after 'if' keyword."),
[INFO] [stdout] 250 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 254 | /         self.consume(
[INFO] [stdout] 255 | |             TokenType::RIGHT_PAREN,
[INFO] [stdout] 256 | |             String::from("Expect ')' after 'if' condition."),
[INFO] [stdout] 257 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:280:9
[INFO] [stdout]     |
[INFO] [stdout] 280 | /         self.consume(
[INFO] [stdout] 281 | |             TokenType::RIGHT_BRACE,
[INFO] [stdout] 282 | |             String::from("Expect '}' after block."),
[INFO] [stdout] 283 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:291:9
[INFO] [stdout]     |
[INFO] [stdout] 291 | /         self.consume(
[INFO] [stdout] 292 | |             TokenType::SEMICOLON,
[INFO] [stdout] 293 | |             String::from("Expect ';' after expression"),
[INFO] [stdout] 294 | |         );
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parser.rs:444:13
[INFO] [stdout]     |
[INFO] [stdout] 444 |             self.consume(TokenType::RIGHT_PAREN, String::from("Expected ')'"));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 75 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 78 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "316c18a7917c5e7546b50c0961d581d0986eeada5b5f46fc78fd2a205f5cc04b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "316c18a7917c5e7546b50c0961d581d0986eeada5b5f46fc78fd2a205f5cc04b", kill_on_drop: false }`
[INFO] [stdout] 316c18a7917c5e7546b50c0961d581d0986eeada5b5f46fc78fd2a205f5cc04b