[INFO] cloning repository https://github.com/0xNullByte/mlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0xNullByte/mlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xNullByte%2Fmlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xNullByte%2Fmlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d4c887e8d7623c3b8372a55bc3f9891e4e416b09
[INFO] testing 0xNullByte/mlox against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xNullByte%2Fmlox" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/0xNullByte/mlox
[INFO] finished tweaking git repo https://github.com/0xNullByte/mlox
[INFO] tweaked toml for git repo https://github.com/0xNullByte/mlox written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0xNullByte/mlox on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0xNullByte/mlox 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ca98257aa8474c81aadbf33d2e9999d35483c71c00167acfaa6cde4702df8e1
[INFO] running `Command { std: "docker" "start" "-a" "9ca98257aa8474c81aadbf33d2e9999d35483c71c00167acfaa6cde4702df8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ca98257aa8474c81aadbf33d2e9999d35483c71c00167acfaa6cde4702df8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ca98257aa8474c81aadbf33d2e9999d35483c71c00167acfaa6cde4702df8e1", kill_on_drop: false }`
[INFO] [stdout] 9ca98257aa8474c81aadbf33d2e9999d35483c71c00167acfaa6cde4702df8e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc9fe1a785d16e630887d78b9dc37ecf9dcca2d378fbe3ca6f421cec153240b9
[INFO] running `Command { std: "docker" "start" "-a" "fc9fe1a785d16e630887d78b9dc37ecf9dcca2d378fbe3ca6f421cec153240b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling mlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rc::Rc`
[INFO] [stdout]  --> src/parser.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::Error, rc::Rc};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `environ::Environment` and `eval::Evaluate`
[INFO] [stdout]  --> src/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     environ::Environment,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     eval::Evaluate,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `environ::Environment`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use environ::Environment;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `eq`
[INFO] [stdout]    --> src/parser.rs:248:17
[INFO] [stdout]     |
[INFO] [stdout] 248 |             let eq = self.previous().clone();
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_eq`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParseError` is never constructed
[INFO] [stdout]   --> src/error.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct ParseError {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `send`, and `report` are never used
[INFO] [stdout]   --> src/error.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl ParseError {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 26 |     pub fn new(had_err: bool) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn send(&mut self, token: &Token, message: &str) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn report(&mut self, line: usize, where_: &str, message: &str) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `to_string` and `print_expr` are never used
[INFO] [stdout]   --> src/expr.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Expr {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 17 |     fn to_string(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn print_expr(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `synchronize` is never used
[INFO] [stdout]    --> src/parser.rs:186:8
[INFO] [stdout]     |
[INFO] [stdout] 15  | impl Parser {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 186 |     fn synchronize(&mut self) -> Stmt {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]   --> src/token.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.91s
[INFO] running `Command { std: "docker" "inspect" "fc9fe1a785d16e630887d78b9dc37ecf9dcca2d378fbe3ca6f421cec153240b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc9fe1a785d16e630887d78b9dc37ecf9dcca2d378fbe3ca6f421cec153240b9", kill_on_drop: false }`
[INFO] [stdout] fc9fe1a785d16e630887d78b9dc37ecf9dcca2d378fbe3ca6f421cec153240b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26b5ec54d4878f80127032693cb0dec2002567cb2cd051ae0f72768cfa5b8069
[INFO] running `Command { std: "docker" "start" "-a" "26b5ec54d4878f80127032693cb0dec2002567cb2cd051ae0f72768cfa5b8069", kill_on_drop: false }`
[INFO] [stderr]    Compiling mlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rc::Rc`
[INFO] [stdout]  --> src/parser.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::Error, rc::Rc};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `environ::Environment` and `eval::Evaluate`
[INFO] [stdout]  --> src/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     environ::Environment,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     eval::Evaluate,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `environ::Environment`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use environ::Environment;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `eq`
[INFO] [stdout]    --> src/parser.rs:248:17
[INFO] [stdout]     |
[INFO] [stdout] 248 |             let eq = self.previous().clone();
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_eq`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ParseError` is never constructed
[INFO] [stdout]   --> src/error.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct ParseError {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `send`, and `report` are never used
[INFO] [stdout]   --> src/error.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl ParseError {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 26 |     pub fn new(had_err: bool) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn send(&mut self, token: &Token, message: &str) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn report(&mut self, line: usize, where_: &str, message: &str) -> Result<(), Error> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `to_string` and `print_expr` are never used
[INFO] [stdout]   --> src/expr.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Expr {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 17 |     fn to_string(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn print_expr(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `synchronize` is never used
[INFO] [stdout]    --> src/parser.rs:186:8
[INFO] [stdout]     |
[INFO] [stdout] 15  | impl Parser {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 186 |     fn synchronize(&mut self) -> Stmt {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]   --> src/token.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "26b5ec54d4878f80127032693cb0dec2002567cb2cd051ae0f72768cfa5b8069", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26b5ec54d4878f80127032693cb0dec2002567cb2cd051ae0f72768cfa5b8069", kill_on_drop: false }`
[INFO] [stdout] 26b5ec54d4878f80127032693cb0dec2002567cb2cd051ae0f72768cfa5b8069
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 73a1c4ec3d34f40317bf609e06f00f1e6c4304d6a0dd7321d720aa8bf5bcdde3
[INFO] running `Command { std: "docker" "start" "-a" "73a1c4ec3d34f40317bf609e06f00f1e6c4304d6a0dd7321d720aa8bf5bcdde3", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `rc::Rc`
[INFO] [stderr]  --> src/parser.rs:1:22
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{io::Error, rc::Rc};
[INFO] [stderr]   |                      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `environ::Environment` and `eval::Evaluate`
[INFO] [stderr]  --> src/parser.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     environ::Environment,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 5 |     eval::Evaluate,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `environ::Environment`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use environ::Environment;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `eq`
[INFO] [stderr]    --> src/parser.rs:248:17
[INFO] [stderr]     |
[INFO] [stderr] 248 |             let eq = self.previous().clone();
[INFO] [stderr]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_eq`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ParseError` is never constructed
[INFO] [stderr]   --> src/error.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct ParseError {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `send`, and `report` are never used
[INFO] [stderr]   --> src/error.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 25 | impl ParseError {
[INFO] [stderr]    | --------------- associated items in this implementation
[INFO] [stderr] 26 |     pub fn new(had_err: bool) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 29 |     pub fn send(&mut self, token: &Token, message: &str) -> Result<(), Error> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 36 |     pub fn report(&mut self, line: usize, where_: &str, message: &str) -> Result<(), Error> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `to_string` and `print_expr` are never used
[INFO] [stderr]   --> src/expr.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | impl Expr {
[INFO] [stderr]    | --------- methods in this implementation
[INFO] [stderr] 17 |     fn to_string(&self) -> String {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 58 |     pub fn print_expr(&self) {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `synchronize` is never used
[INFO] [stderr]    --> src/parser.rs:186:8
[INFO] [stderr]     |
[INFO] [stderr] 15  | impl Parser {
[INFO] [stderr]     | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 186 |     fn synchronize(&mut self) -> Stmt {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `line` is never read
[INFO] [stderr]   --> src/token.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 79 | pub struct Token {
[INFO] [stderr]    |            ----- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 83 |     pub line: usize,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `mlox` (bin "mlox" test) generated 9 warnings (run `cargo fix --bin "mlox" --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mlox-06116126d9d95523)
[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] running `Command { std: "docker" "inspect" "73a1c4ec3d34f40317bf609e06f00f1e6c4304d6a0dd7321d720aa8bf5bcdde3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73a1c4ec3d34f40317bf609e06f00f1e6c4304d6a0dd7321d720aa8bf5bcdde3", kill_on_drop: false }`
[INFO] [stdout] 73a1c4ec3d34f40317bf609e06f00f1e6c4304d6a0dd7321d720aa8bf5bcdde3
