[INFO] cloning repository https://github.com/dovakin0007/Lox_clone
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dovakin0007/Lox_clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdovakin0007%2FLox_clone", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdovakin0007%2FLox_clone'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d56acaf198ff94eb2249146024250dc2d7ac4d0
[INFO] checking dovakin0007/Lox_clone against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdovakin0007%2FLox_clone" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dovakin0007/Lox_clone
[INFO] finished tweaking git repo https://github.com/dovakin0007/Lox_clone
[INFO] tweaked toml for git repo https://github.com/dovakin0007/Lox_clone written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dovakin0007/Lox_clone on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dovakin0007/Lox_clone 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 290f2fcb2d494f2d72bb1b1e8de9a1fc3441db6ec54a710bc8e645fd2a4efbcb
[INFO] running `Command { std: "docker" "start" "-a" "290f2fcb2d494f2d72bb1b1e8de9a1fc3441db6ec54a710bc8e645fd2a4efbcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "290f2fcb2d494f2d72bb1b1e8de9a1fc3441db6ec54a710bc8e645fd2a4efbcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "290f2fcb2d494f2d72bb1b1e8de9a1fc3441db6ec54a710bc8e645fd2a4efbcb", kill_on_drop: false }`
[INFO] [stdout] 290f2fcb2d494f2d72bb1b1e8de9a1fc3441db6ec54a710bc8e645fd2a4efbcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3735bce56956a6ece3419fa547ab3e75a3ceca4f32892522dc772a330cae5020
[INFO] running `Command { std: "docker" "start" "-a" "3735bce56956a6ece3419fa547ab3e75a3ceca4f32892522dc772a330cae5020", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking Lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `TokenType` and `Token`
[INFO] [stdout]  --> src/astprinter.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::token::{Token, TokenType};
[INFO] [stdout]   |                    ^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/astprinter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/astprinter.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::f64::consts::E`
[INFO] [stdout]  --> src/environment.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::f64::consts::E;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/error.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Debug, Formatter, write};
[INFO] [stdout]   |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]  --> src/function.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log::debug;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]   --> src/interpreter.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::fmt::{write, Debug, Display, Formatter, Result as FmtResult};
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::interpreter::Types`
[INFO] [stdout]  --> src/parser.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::interpreter::Types;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `False` and `Return`
[INFO] [stdout]  --> src/parser.rs:6:31
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::token::TokenType::{False, LeftParen, Return, RightParen, SemiColon, True};
[INFO] [stdout]   |                               ^^^^^             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]  --> src/parser.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use log::debug;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind::Other`
[INFO] [stdout]  --> src/parser.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io::ErrorKind::Other;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Expr`
[INFO] [stdout]   --> src/main.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::ast::{Expr, Stmt};
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use log::debug;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/astprinter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/astprinter.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::f64::consts::E`
[INFO] [stdout]  --> src/environment.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::f64::consts::E;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/error.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Debug, Formatter, write};
[INFO] [stdout]   |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]  --> src/function.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log::debug;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]   --> src/interpreter.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::fmt::{write, Debug, Display, Formatter, Result as FmtResult};
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::interpreter::Types`
[INFO] [stdout]  --> src/parser.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::interpreter::Types;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `False` and `Return`
[INFO] [stdout]  --> src/parser.rs:6:31
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::token::TokenType::{False, LeftParen, Return, RightParen, SemiColon, True};
[INFO] [stdout]   |                               ^^^^^             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]  --> src/parser.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use log::debug;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind::Other`
[INFO] [stdout]  --> src/parser.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io::ErrorKind::Other;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]    --> src/parser.rs:573:9
[INFO] [stdout]     |
[INFO] [stdout] 573 |     use log::debug;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Expr`
[INFO] [stdout]   --> src/main.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::ast::{Expr, Stmt};
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use log::debug;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paren`
[INFO] [stdout]   --> src/astprinter.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 ref paren,
[INFO] [stdout]    |                 ^^^^^^^^^ help: try ignoring the field: `paren: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/astprinter.rs:89:27
[INFO] [stdout]    |
[INFO] [stdout] 89 |                     .map(|x| self.visit_statement(s))
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/interpreter.rs:40:29
[INFO] [stdout]    |
[INFO] [stdout] 40 |             body: Box::new(|args: &Vec<Types>| {
[INFO] [stdout]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmts`
[INFO] [stdout]    --> src/interpreter.rs:122:37
[INFO] [stdout]     |
[INFO] [stdout] 122 |             &Stmt::Class(ref token, ref stmts) => {
[INFO] [stdout]     |                                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stmts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Token`
[INFO] [stdout]    --> src/interpreter.rs:148:27
[INFO] [stdout]     |
[INFO] [stdout] 148 |             &Stmt::Return(ref Token, ref expr) => {
[INFO] [stdout]     |                           ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/resolver.rs:113:17
[INFO] [stdout]     |
[INFO] [stdout] 113 |                 ref op,
[INFO] [stdout]     |                 ^^^^^^ help: try ignoring the field: `op: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paren`
[INFO] [stdout]    --> src/resolver.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 ref paren,
[INFO] [stdout]     |                 ^^^^^^^^^ help: try ignoring the field: `paren: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/resolver.rs:135:30
[INFO] [stdout]     |
[INFO] [stdout] 135 |             &Expr::Literal { ref token } => Ok(()),
[INFO] [stdout]     |                              ^^^^^^^^^ help: try ignoring the field: `token: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/resolver.rs:138:17
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 ref op,
[INFO] [stdout]     |                 ^^^^^^ help: try ignoring the field: `op: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/resolver.rs:145:28
[INFO] [stdout]     |
[INFO] [stdout] 145 |             &Expr::Unary { ref op, ref expr } => {
[INFO] [stdout]     |                            ^^^^^^ help: try ignoring the field: `op: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]    --> src/resolver.rs:176:37
[INFO] [stdout]     |
[INFO] [stdout] 176 |             &Stmt::Class(ref token, ref stmt) => {
[INFO] [stdout]     |                                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AstPrinter` is never constructed
[INFO] [stdout]  --> src/astprinter.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct AstPrinter {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/astprinter.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl AstPrinter {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 14 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]   --> src/error.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     RunTime{
[INFO] [stdout]    |     ------- field in this variant
[INFO] [stdout] 26 |         token: Token,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `is_initializer` is never read
[INFO] [stdout]   --> src/function.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct UserFunction {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub is_initializer: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     interpreter.interpret(statements);
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let _ = interpreter.interpret(statements);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Expr` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:129:29
[INFO] [stdout]     |
[INFO] [stdout] 129 |             &Stmt::Expr(ref Expr) => {
[INFO] [stdout]     |                             ^^^^ help: convert the identifier to snake case: `expr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Token` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:148:31
[INFO] [stdout]     |
[INFO] [stdout] 148 |             &Stmt::Return(ref Token, ref expr) => {
[INFO] [stdout]     |                               ^^^^^ help: convert the identifier to snake case: `token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Expr` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:158:31
[INFO] [stdout]     |
[INFO] [stdout] 158 |             &Stmt::IfStmt(ref Expr, ref then, ref else_option) => {
[INFO] [stdout]     |                               ^^^^ help: convert the identifier to snake case: `expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Expr` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:169:25
[INFO] [stdout]     |
[INFO] [stdout] 169 |             Stmt::Print(Expr) => {
[INFO] [stdout]     |                         ^^^^ help: convert the identifier to snake case: `expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Token` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:175:34
[INFO] [stdout]     |
[INFO] [stdout] 175 |             Stmt::VarDeclaration(Token, Expr) => match Expr {
[INFO] [stdout]     |                                  ^^^^^ help: convert the identifier to snake case: `token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Expr` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:175:41
[INFO] [stdout]     |
[INFO] [stdout] 175 |             Stmt::VarDeclaration(Token, Expr) => match Expr {
[INFO] [stdout]     |                                         ^^^^ help: convert the identifier to snake case: `expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Expr` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:192:29
[INFO] [stdout]     |
[INFO] [stdout] 192 |             Stmt::While(ref Expr, ref Stmt) => {
[INFO] [stdout]     |                             ^^^^ help: convert the identifier to snake case: `expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Lox` (bin "Lox") due to 1 previous error; 38 warnings emitted
[INFO] [stdout] warning: variable `Stmt` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:192:39
[INFO] [stdout]     |
[INFO] [stdout] 192 |             Stmt::While(ref Expr, ref Stmt) => {
[INFO] [stdout]     |                                       ^^^^ help: convert the identifier to snake case (notice the capitalization): `stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interpreter.rs:378:17
[INFO] [stdout]     |
[INFO] [stdout] 378 |                 self.environment.get(name);
[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] 378 |                 let _ = self.environment.get(name);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/scanner.rs:245:29
[INFO] [stdout]     |
[INFO] [stdout] 245 | ...   let ident: String = self.sub_string(self.start, self.current).expect("invalid character").parse::<String>().expect("Unable to parse...
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paren`
[INFO] [stdout]   --> src/astprinter.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 ref paren,
[INFO] [stdout]    |                 ^^^^^^^^^ help: try ignoring the field: `paren: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/astprinter.rs:89:27
[INFO] [stdout]    |
[INFO] [stdout] 89 |                     .map(|x| self.visit_statement(s))
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/interpreter.rs:40:29
[INFO] [stdout]    |
[INFO] [stdout] 40 |             body: Box::new(|args: &Vec<Types>| {
[INFO] [stdout]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmts`
[INFO] [stdout]    --> src/interpreter.rs:122:37
[INFO] [stdout]     |
[INFO] [stdout] 122 |             &Stmt::Class(ref token, ref stmts) => {
[INFO] [stdout]     |                                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stmts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Token`
[INFO] [stdout]    --> src/interpreter.rs:148:27
[INFO] [stdout]     |
[INFO] [stdout] 148 |             &Stmt::Return(ref Token, ref expr) => {
[INFO] [stdout]     |                           ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `body`
[INFO] [stdout]     --> src/parser.rs:1023:42
[INFO] [stdout]      |
[INFO] [stdout] 1023 |             Stmt::Function(name, params, body) => {
[INFO] [stdout]      |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_body`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/resolver.rs:113:17
[INFO] [stdout]     |
[INFO] [stdout] 113 |                 ref op,
[INFO] [stdout]     |                 ^^^^^^ help: try ignoring the field: `op: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paren`
[INFO] [stdout]    --> src/resolver.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 ref paren,
[INFO] [stdout]     |                 ^^^^^^^^^ help: try ignoring the field: `paren: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/resolver.rs:135:30
[INFO] [stdout]     |
[INFO] [stdout] 135 |             &Expr::Literal { ref token } => Ok(()),
[INFO] [stdout]     |                              ^^^^^^^^^ help: try ignoring the field: `token: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/resolver.rs:138:17
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 ref op,
[INFO] [stdout]     |                 ^^^^^^ help: try ignoring the field: `op: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/resolver.rs:145:28
[INFO] [stdout]     |
[INFO] [stdout] 145 |             &Expr::Unary { ref op, ref expr } => {
[INFO] [stdout]     |                            ^^^^^^ help: try ignoring the field: `op: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]    --> src/resolver.rs:176:37
[INFO] [stdout]     |
[INFO] [stdout] 176 |             &Stmt::Class(ref token, ref stmt) => {
[INFO] [stdout]     |                                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]   --> src/error.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     RunTime{
[INFO] [stdout]    |     ------- field in this variant
[INFO] [stdout] 26 |         token: Token,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `is_initializer` is never read
[INFO] [stdout]   --> src/function.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct UserFunction {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub is_initializer: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     interpreter.interpret(statements);
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 98 |     let _ = interpreter.interpret(statements);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Expr` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:129:29
[INFO] [stdout]     |
[INFO] [stdout] 129 |             &Stmt::Expr(ref Expr) => {
[INFO] [stdout]     |                             ^^^^ help: convert the identifier to snake case: `expr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Token` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:148:31
[INFO] [stdout]     |
[INFO] [stdout] 148 |             &Stmt::Return(ref Token, ref expr) => {
[INFO] [stdout]     |                               ^^^^^ help: convert the identifier to snake case: `token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Expr` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:158:31
[INFO] [stdout]     |
[INFO] [stdout] 158 |             &Stmt::IfStmt(ref Expr, ref then, ref else_option) => {
[INFO] [stdout]     |                               ^^^^ help: convert the identifier to snake case: `expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Expr` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:169:25
[INFO] [stdout]     |
[INFO] [stdout] 169 |             Stmt::Print(Expr) => {
[INFO] [stdout]     |                         ^^^^ help: convert the identifier to snake case: `expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Token` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:175:34
[INFO] [stdout]     |
[INFO] [stdout] 175 |             Stmt::VarDeclaration(Token, Expr) => match Expr {
[INFO] [stdout]     |                                  ^^^^^ help: convert the identifier to snake case: `token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Expr` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:175:41
[INFO] [stdout]     |
[INFO] [stdout] 175 |             Stmt::VarDeclaration(Token, Expr) => match Expr {
[INFO] [stdout]     |                                         ^^^^ help: convert the identifier to snake case: `expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Expr` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:192:29
[INFO] [stdout]     |
[INFO] [stdout] 192 |             Stmt::While(ref Expr, ref Stmt) => {
[INFO] [stdout]     |                             ^^^^ help: convert the identifier to snake case: `expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Stmt` should have a snake case name
[INFO] [stdout]    --> src/interpreter.rs:192:39
[INFO] [stdout]     |
[INFO] [stdout] 192 |             Stmt::While(ref Expr, ref Stmt) => {
[INFO] [stdout]     |                                       ^^^^ help: convert the identifier to snake case (notice the capitalization): `stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interpreter.rs:378:17
[INFO] [stdout]     |
[INFO] [stdout] 378 |                 self.environment.get(name);
[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] 378 |                 let _ = self.environment.get(name);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/scanner.rs:245:29
[INFO] [stdout]     |
[INFO] [stdout] 245 | ...   let ident: String = self.sub_string(self.start, self.current).expect("invalid character").parse::<String>().expect("Unable to parse...
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Lox` (bin "Lox" test) due to 1 previous error; 37 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3735bce56956a6ece3419fa547ab3e75a3ceca4f32892522dc772a330cae5020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3735bce56956a6ece3419fa547ab3e75a3ceca4f32892522dc772a330cae5020", kill_on_drop: false }`
[INFO] [stdout] 3735bce56956a6ece3419fa547ab3e75a3ceca4f32892522dc772a330cae5020
