[INFO] cloning repository https://github.com/kazuhiko-itani/interpreter-made-of-go-made-of-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kazuhiko-itani/interpreter-made-of-go-made-of-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazuhiko-itani%2Finterpreter-made-of-go-made-of-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazuhiko-itani%2Finterpreter-made-of-go-made-of-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95f66d57fbe830852c0a4ffef6a473835a9db306
[INFO] testing kazuhiko-itani/interpreter-made-of-go-made-of-rust against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazuhiko-itani%2Finterpreter-made-of-go-made-of-rust" "/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/kazuhiko-itani/interpreter-made-of-go-made-of-rust
[INFO] finished tweaking git repo https://github.com/kazuhiko-itani/interpreter-made-of-go-made-of-rust
[INFO] tweaked toml for git repo https://github.com/kazuhiko-itani/interpreter-made-of-go-made-of-rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kazuhiko-itani/interpreter-made-of-go-made-of-rust on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kazuhiko-itani/interpreter-made-of-go-made-of-rust 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58a5b9dc4ded1534056216526e777185262c31d64052bd1282702402950b2155
[INFO] running `Command { std: "docker" "start" "-a" "58a5b9dc4ded1534056216526e777185262c31d64052bd1282702402950b2155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58a5b9dc4ded1534056216526e777185262c31d64052bd1282702402950b2155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58a5b9dc4ded1534056216526e777185262c31d64052bd1282702402950b2155", kill_on_drop: false }`
[INFO] [stdout] 58a5b9dc4ded1534056216526e777185262c31d64052bd1282702402950b2155
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a28de404c1fbfd0e892d9e59d0612b11f4aba7ee9609d73abcbccac25c0a2009
[INFO] running `Command { std: "docker" "start" "-a" "a28de404c1fbfd0e892d9e59d0612b11f4aba7ee9609d73abcbccac25c0a2009", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.8
[INFO] [stderr]    Compiling linux-raw-sys v0.4.5
[INFO] [stderr]    Compiling bitflags v2.4.0
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling home v0.5.5
[INFO] [stderr]    Compiling nix v0.26.2
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling fd-lock v3.0.13
[INFO] [stderr]    Compiling rustyline v12.0.0
[INFO] [stderr]    Compiling interpreter-made-of-go-made-of-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/evaluator.rs:134:16
[INFO] [stdout]     |
[INFO] [stdout] 134 |             if (is_error(&function)) {
[INFO] [stdout]     |                ^                   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 134 -             if (is_error(&function)) {
[INFO] [stdout] 134 +             if is_error(&function)  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/evaluator.rs:219:24
[INFO] [stdout]     |
[INFO] [stdout] 219 |         _ => new_error((format!("unknown operator: {} {} {}", left, op, right))),
[INFO] [stdout]     |                        ^                                                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 219 -         _ => new_error((format!("unknown operator: {} {} {}", left, op, right))),
[INFO] [stdout] 219 +         _ => new_error(format!("unknown operator: {} {} {}", left, op, right) ),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/parse.rs:76:38
[INFO] [stdout]    |
[INFO] [stdout] 76 |         while !self.current_token_is((TokenType::EOF)) {
[INFO] [stdout]    |                                      ^              ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 76 -         while !self.current_token_is((TokenType::EOF)) {
[INFO] [stdout] 76 +         while !self.current_token_is(TokenType::EOF ) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/evaluator.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/evaluator.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Statement::Expression(expression) => eval_expression(expression, env),
[INFO] [stdout]    |         --------------------------------- matches some of the same values
[INFO] [stdout] 43 |         Statement::Return(expr) => Object::ReturnValue(Box::new(eval_expression(expr, env))),
[INFO] [stdout]    |         ----------------------- matches some of the same values
[INFO] [stdout] 44 |         Statement::Let(ident, value) => {
[INFO] [stdout]    |         ---------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 49 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stdout]    |         ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/evaluator.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout] 148 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/evaluator.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout]  55 |         Expression::IntegerLiteral(integer) => Object::Integer(integer),
[INFO] [stdout]     |         ----------------------------------- matches some of the same values
[INFO] [stdout]  56 |         Expression::StringLiteral(string) => Object::String(string),
[INFO] [stdout]     |         --------------------------------- matches some of the same values
[INFO] [stdout]  57 |         Expression::Boolean(bool) => {
[INFO] [stdout]     |         ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout]  64 |         Expression::ArrayLiteral(elements) => {
[INFO] [stdout]     |         ---------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 148 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stdout]     |         ^ ...and 7 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/object.rs:63:42
[INFO] [stdout]    |
[INFO] [stdout] 63 |             Object::Function(args, body, env) => {
[INFO] [stdout]    |                                          ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `string` is never used
[INFO] [stdout]   --> src/parse.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Parser {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 87 |     pub fn string(&self, program: &Program) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.25s
[INFO] running `Command { std: "docker" "inspect" "a28de404c1fbfd0e892d9e59d0612b11f4aba7ee9609d73abcbccac25c0a2009", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a28de404c1fbfd0e892d9e59d0612b11f4aba7ee9609d73abcbccac25c0a2009", kill_on_drop: false }`
[INFO] [stdout] a28de404c1fbfd0e892d9e59d0612b11f4aba7ee9609d73abcbccac25c0a2009
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c3ffbc0564089bab7eb414868a30acd15c73f97f91e0c027cca424b54a8488e
[INFO] running `Command { std: "docker" "start" "-a" "4c3ffbc0564089bab7eb414868a30acd15c73f97f91e0c027cca424b54a8488e", kill_on_drop: false }`
[INFO] [stderr]    Compiling interpreter-made-of-go-made-of-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/evaluator.rs:134:16
[INFO] [stdout]     |
[INFO] [stdout] 134 |             if (is_error(&function)) {
[INFO] [stdout]     |                ^                   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 134 -             if (is_error(&function)) {
[INFO] [stdout] 134 +             if is_error(&function)  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/evaluator.rs:219:24
[INFO] [stdout]     |
[INFO] [stdout] 219 |         _ => new_error((format!("unknown operator: {} {} {}", left, op, right))),
[INFO] [stdout]     |                        ^                                                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 219 -         _ => new_error((format!("unknown operator: {} {} {}", left, op, right))),
[INFO] [stdout] 219 +         _ => new_error(format!("unknown operator: {} {} {}", left, op, right) ),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/parse.rs:76:38
[INFO] [stdout]    |
[INFO] [stdout] 76 |         while !self.current_token_is((TokenType::EOF)) {
[INFO] [stdout]    |                                      ^              ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 76 -         while !self.current_token_is((TokenType::EOF)) {
[INFO] [stdout] 76 +         while !self.current_token_is(TokenType::EOF ) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/evaluator.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stdout]    |         ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/evaluator.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Statement::Expression(expression) => eval_expression(expression, env),
[INFO] [stdout]    |         --------------------------------- matches some of the same values
[INFO] [stdout] 43 |         Statement::Return(expr) => Object::ReturnValue(Box::new(eval_expression(expr, env))),
[INFO] [stdout]    |         ----------------------- matches some of the same values
[INFO] [stdout] 44 |         Statement::Let(ident, value) => {
[INFO] [stdout]    |         ---------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 49 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stdout]    |         ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/evaluator.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout] 148 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/evaluator.rs:148:9
[INFO] [stdout]     |
[INFO] [stdout]  55 |         Expression::IntegerLiteral(integer) => Object::Integer(integer),
[INFO] [stdout]     |         ----------------------------------- matches some of the same values
[INFO] [stdout]  56 |         Expression::StringLiteral(string) => Object::String(string),
[INFO] [stdout]     |         --------------------------------- matches some of the same values
[INFO] [stdout]  57 |         Expression::Boolean(bool) => {
[INFO] [stdout]     |         ------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout]  64 |         Expression::ArrayLiteral(elements) => {
[INFO] [stdout]     |         ---------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 148 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stdout]     |         ^ ...and 7 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/object.rs:63:42
[INFO] [stdout]    |
[INFO] [stdout] 63 |             Object::Function(args, body, env) => {
[INFO] [stdout]    |                                          ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "4c3ffbc0564089bab7eb414868a30acd15c73f97f91e0c027cca424b54a8488e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c3ffbc0564089bab7eb414868a30acd15c73f97f91e0c027cca424b54a8488e", kill_on_drop: false }`
[INFO] [stdout] 4c3ffbc0564089bab7eb414868a30acd15c73f97f91e0c027cca424b54a8488e
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 525466ad1a3f8db82d85e49bb803d66d86a615240a3502d106f8475989973cf9
[INFO] running `Command { std: "docker" "start" "-a" "525466ad1a3f8db82d85e49bb803d66d86a615240a3502d106f8475989973cf9", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/evaluator.rs:134:16
[INFO] [stderr]     |
[INFO] [stderr] 134 |             if (is_error(&function)) {
[INFO] [stderr]     |                ^                   ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 134 -             if (is_error(&function)) {
[INFO] [stderr] 134 +             if is_error(&function)  {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/evaluator.rs:219:24
[INFO] [stderr]     |
[INFO] [stderr] 219 |         _ => new_error((format!("unknown operator: {} {} {}", left, op, right))),
[INFO] [stderr]     |                        ^                                                      ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 219 -         _ => new_error((format!("unknown operator: {} {} {}", left, op, right))),
[INFO] [stderr] 219 +         _ => new_error(format!("unknown operator: {} {} {}", left, op, right) ),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/parse.rs:76:38
[INFO] [stderr]    |
[INFO] [stderr] 76 |         while !self.current_token_is((TokenType::EOF)) {
[INFO] [stderr]    |                                      ^              ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 76 -         while !self.current_token_is((TokenType::EOF)) {
[INFO] [stderr] 76 +         while !self.current_token_is(TokenType::EOF ) {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/evaluator.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stderr]    |         ^ no value can reach this
[INFO] [stderr]    |
[INFO] [stderr] note: multiple earlier patterns match some of the same values
[INFO] [stderr]   --> src/evaluator.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         Statement::Expression(expression) => eval_expression(expression, env),
[INFO] [stderr]    |         --------------------------------- matches some of the same values
[INFO] [stderr] 43 |         Statement::Return(expr) => Object::ReturnValue(Box::new(eval_expression(expr, env))),
[INFO] [stderr]    |         ----------------------- matches some of the same values
[INFO] [stderr] 44 |         Statement::Let(ident, value) => {
[INFO] [stderr]    |         ---------------------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 49 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stderr]    |         ^ collectively making this unreachable
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/evaluator.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr] 148 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stderr]     |         ^ no value can reach this
[INFO] [stderr]     |
[INFO] [stderr] note: multiple earlier patterns match some of the same values
[INFO] [stderr]    --> src/evaluator.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr]  55 |         Expression::IntegerLiteral(integer) => Object::Integer(integer),
[INFO] [stderr]     |         ----------------------------------- matches some of the same values
[INFO] [stderr]  56 |         Expression::StringLiteral(string) => Object::String(string),
[INFO] [stderr]     |         --------------------------------- matches some of the same values
[INFO] [stderr]  57 |         Expression::Boolean(bool) => {
[INFO] [stderr]     |         ------------------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr]  64 |         Expression::ArrayLiteral(elements) => {
[INFO] [stderr]     |         ---------------------------------- matches some of the same values
[INFO] [stderr] ...
[INFO] [stderr] 148 |         _ => eval_expression(Expression::Ident("todo".to_string()), env),
[INFO] [stderr]     |         ^ ...and 7 other patterns collectively make this unreachable
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]   --> src/object.rs:63:42
[INFO] [stderr]    |
[INFO] [stderr] 63 |             Object::Function(args, body, env) => {
[INFO] [stderr]    |                                          ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `interpreter-made-of-go-made-of-rust` (bin "interpreter-made-of-go-made-of-rust" test) generated 6 warnings (run `cargo fix --bin "interpreter-made-of-go-made-of-rust" -p interpreter-made-of-go-made-of-rust --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/interpreter_made_of_go_made_of_rust-8f0f670f4d156a1e)
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test evaluator::tests::test_bang_operator_eval ... ok
[INFO] [stdout] test evaluator::tests::test_error_handling ... ok
[INFO] [stdout] test evaluator::tests::test_eval_array_index_expressions ... ok
[INFO] [stdout] test evaluator::tests::test_eval_array_literals ... ok
[INFO] [stdout] test evaluator::tests::test_eval_builtin_push ... ok
[INFO] [stdout] test evaluator::tests::test_function_parsing ... ok
[INFO] [stdout] test evaluator::tests::test_eval_integer ... ok
[INFO] [stdout] test evaluator::tests::test_eval_string ... ok
[INFO] [stdout] test evaluator::tests::test_closure ... ok
[INFO] [stdout] test evaluator::tests::test_eval_builtin_functions ... ok
[INFO] [stdout] test evaluator::tests::test_eval_bool ... ok
[INFO] [stdout] test parse::tests::test_array_literals_parsing ... ok
[INFO] [stdout] test parse::tests::test_call_expression_parsing ... ok
[INFO] [stdout] test evaluator::tests::test_string_cancatenation ... ok
[INFO] [stdout] test evaluator::tests::test_let_statements ... ok
[INFO] [stdout] test parse::tests::test_if_expression_parsing ... ok
[INFO] [stdout] test evaluator::tests::test_return_eval ... ok
[INFO] [stdout] test parse::tests::test_index_expression_parsing ... ok
[INFO] [stdout] test parse::tests::test_expression_statement_parsing ... ok
[INFO] [stdout] test parse::tests::test_let_statement_parsing ... ok
[INFO] [stdout] test evaluator::tests::test_function_application ... ok
[INFO] [stdout] test evaluator::tests::test_if_else_expression ... ok
[INFO] [stdout] test parse::tests::test_return_statement_parsing ... ok
[INFO] [stdout] test parse::tests::test_string_literal_expression ... ok
[INFO] [stdout] test tokenize::tests::test_next_token ... ok
[INFO] [stdout] test evaluator::tests::test_eval_builtin_rest ... ok
[INFO] [stdout] test parse::tests::test_parser ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "525466ad1a3f8db82d85e49bb803d66d86a615240a3502d106f8475989973cf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "525466ad1a3f8db82d85e49bb803d66d86a615240a3502d106f8475989973cf9", kill_on_drop: false }`
[INFO] [stdout] 525466ad1a3f8db82d85e49bb803d66d86a615240a3502d106f8475989973cf9
