[INFO] cloning repository https://github.com/borgmanJeremy/lox_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/borgmanJeremy/lox_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FborgmanJeremy%2Flox_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FborgmanJeremy%2Flox_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1331eb11648e05469f1382ea4c5fa1cda7f22aa9
[INFO] testing borgmanJeremy/lox_rust against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FborgmanJeremy%2Flox_rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/borgmanJeremy/lox_rust on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/borgmanJeremy/lox_rust
[INFO] finished tweaking git repo https://github.com/borgmanJeremy/lox_rust
[INFO] tweaked toml for git repo https://github.com/borgmanJeremy/lox_rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/borgmanJeremy/lox_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d1e690a96203972b79f7241073be03e0211f0dcb71882c715b86fb7d8706540
[INFO] running `Command { std: "docker" "start" "-a" "7d1e690a96203972b79f7241073be03e0211f0dcb71882c715b86fb7d8706540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d1e690a96203972b79f7241073be03e0211f0dcb71882c715b86fb7d8706540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d1e690a96203972b79f7241073be03e0211f0dcb71882c715b86fb7d8706540", kill_on_drop: false }`
[INFO] [stdout] 7d1e690a96203972b79f7241073be03e0211f0dcb71882c715b86fb7d8706540
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4918305834aa68bc66d8acfca5c762f7aacbcd4c09feffb61b6177503ac2ab2e
[INFO] running `Command { std: "docker" "start" "-a" "4918305834aa68bc66d8acfca5c762f7aacbcd4c09feffb61b6177503ac2ab2e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `boolean` should have an upper camel case name
[INFO] [stdout]   --> src/scanner.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     boolean(bool),
[INFO] [stdout]    |     ^^^^^^^ help: convert the identifier to upper camel case: `Boolean`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error_msg`
[INFO] [stdout]    --> src/parser.rs:185:55
[INFO] [stdout]     |
[INFO] [stdout] 185 |     fn consume(&mut self, ttype: &scanner::TokenType, error_msg: &str) -> &scanner::Token {
[INFO] [stdout]     |                                                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_msg`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/scanner.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 254 |         &self.add_token(TokenType::String, Literal::Text(value), source);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 254 |         let _ = &self.add_token(TokenType::String, Literal::Text(value), source);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lox::parser`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lox::parser;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lox::scanner`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lox::scanner;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/main.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp`
[INFO] [stdout]   --> src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let temp = lox::parser::Parser::new();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_temp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Interpreter`
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Interpreter {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `error`
[INFO] [stdout]   --> src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn error(&self, line: i32, message: &str) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `report`
[INFO] [stdout]   --> src/main.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn report(&self, line: i32, location: &str, message: &str) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.22s
[INFO] running `Command { std: "docker" "inspect" "4918305834aa68bc66d8acfca5c762f7aacbcd4c09feffb61b6177503ac2ab2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4918305834aa68bc66d8acfca5c762f7aacbcd4c09feffb61b6177503ac2ab2e", kill_on_drop: false }`
[INFO] [stdout] 4918305834aa68bc66d8acfca5c762f7aacbcd4c09feffb61b6177503ac2ab2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a4ece600dfac583755b965865f48b4be800f1424bd6b89fce6a4a92d4350c29
[INFO] running `Command { std: "docker" "start" "-a" "7a4ece600dfac583755b965865f48b4be800f1424bd6b89fce6a4a92d4350c29", kill_on_drop: false }`
[INFO] [stdout] warning: variant `boolean` should have an upper camel case name
[INFO] [stdout]   --> src/scanner.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     boolean(bool),
[INFO] [stdout]    |     ^^^^^^^ help: convert the identifier to upper camel case: `Boolean`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `error_msg`
[INFO] [stdout]    --> src/parser.rs:185:55
[INFO] [stdout]     |
[INFO] [stdout] 185 |     fn consume(&mut self, ttype: &scanner::TokenType, error_msg: &str) -> &scanner::Token {
[INFO] [stdout]     |                                                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_msg`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/scanner.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 254 |         &self.add_token(TokenType::String, Literal::Text(value), source);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 254 |         let _ = &self.add_token(TokenType::String, Literal::Text(value), source);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `boolean` should have an upper camel case name
[INFO] [stdout]   --> src/scanner.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     boolean(bool),
[INFO] [stdout]    |     ^^^^^^^ help: convert the identifier to upper camel case: `Boolean`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lox::parser`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lox::parser;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lox::scanner`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lox::scanner;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/main.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temp`
[INFO] [stdout]   --> src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let temp = lox::parser::Parser::new();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_temp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Interpreter`
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Interpreter {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `error`
[INFO] [stdout]   --> src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn error(&self, line: i32, message: &str) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `report`
[INFO] [stdout]   --> src/main.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn report(&self, line: i32, location: &str, message: &str) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error_msg`
[INFO] [stdout]    --> src/parser.rs:185:55
[INFO] [stdout]     |
[INFO] [stdout] 185 |     fn consume(&mut self, ttype: &scanner::TokenType, error_msg: &str) -> &scanner::Token {
[INFO] [stdout]     |                                                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_msg`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/parser.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let x = Expression::Assign {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/scanner.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 254 |         &self.add_token(TokenType::String, Literal::Text(value), source);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 254 |         let _ = &self.add_token(TokenType::String, Literal::Text(value), source);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "7a4ece600dfac583755b965865f48b4be800f1424bd6b89fce6a4a92d4350c29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a4ece600dfac583755b965865f48b4be800f1424bd6b89fce6a4a92d4350c29", kill_on_drop: false }`
[INFO] [stdout] 7a4ece600dfac583755b965865f48b4be800f1424bd6b89fce6a4a92d4350c29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 782369485c58e52533b59d0ba688a07eb9c8ad2005ea460818186202a389bc8e
[INFO] running `Command { std: "docker" "start" "-a" "782369485c58e52533b59d0ba688a07eb9c8ad2005ea460818186202a389bc8e", kill_on_drop: false }`
[INFO] [stderr] warning: variant `boolean` should have an upper camel case name
[INFO] [stderr]   --> src/scanner.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     boolean(bool),
[INFO] [stderr]    |     ^^^^^^^ help: convert the identifier to upper camel case: `Boolean`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `error_msg`
[INFO] [stderr]    --> src/parser.rs:185:55
[INFO] [stderr]     |
[INFO] [stderr] 185 |     fn consume(&mut self, ttype: &scanner::TokenType, error_msg: &str) -> &scanner::Token {
[INFO] [stderr]     |                                                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_msg`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/scanner.rs:254:9
[INFO] [stderr]     |
[INFO] [stderr] 254 |         &self.add_token(TokenType::String, Literal::Text(value), source);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 254 |         let _ = &self.add_token(TokenType::String, Literal::Text(value), source);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `lox` (lib) generated 3 warnings
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/parser.rs:200:13
[INFO] [stderr]     |
[INFO] [stderr] 200 |         let x = Expression::Assign {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: `lox` (lib test) generated 4 warnings (3 duplicates)
[INFO] [stderr] warning: unused import: `lox::parser`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use lox::parser;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `lox::scanner`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use lox::scanner;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/main.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{self, Read, Write};
[INFO] [stderr]   |                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `temp`
[INFO] [stderr]   --> src/main.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let temp = lox::parser::Parser::new();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_temp`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Interpreter`
[INFO] [stderr]   --> src/main.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | struct Interpreter {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `error`
[INFO] [stderr]   --> src/main.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn error(&self, line: i32, message: &str) {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `report`
[INFO] [stderr]   --> src/main.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn report(&self, line: i32, location: &str, message: &str) {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `lox` (bin "lox" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lox-07ac5a5c6ae8e109)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lox-74d854241302a685)
[INFO] [stdout] test parser::tests::can_build ... ok
[INFO] [stdout] test scanner::tests::test_double_from_string ... ok
[INFO] [stdout] test scanner::tests::test_is_alphanumeric_underscore ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lox
[INFO] [stderr] warning: variant `boolean` should have an upper camel case name
[INFO] [stderr]   --> /opt/rustwide/workdir/src/scanner.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     boolean(bool),
[INFO] [stderr]    |     ^^^^^^^ help: convert the identifier to upper camel case: `Boolean`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stdout] running 0 tests
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "782369485c58e52533b59d0ba688a07eb9c8ad2005ea460818186202a389bc8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "782369485c58e52533b59d0ba688a07eb9c8ad2005ea460818186202a389bc8e", kill_on_drop: false }`
[INFO] [stdout] 782369485c58e52533b59d0ba688a07eb9c8ad2005ea460818186202a389bc8e