[INFO] cloning repository https://github.com/sifear/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sifear/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsifear%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsifear%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8913a0403243035b3362c2c6a6fc0a3f017fbd5b
[INFO] checking sifear/rlox against master#368e2fd458a22d0cc133d0c254f2612ee999744f for pr-128351
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsifear%2Frlox" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sifear/rlox on toolchain 368e2fd458a22d0cc133d0c254f2612ee999744f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sifear/rlox
[INFO] finished tweaking git repo https://github.com/sifear/rlox
[INFO] tweaked toml for git repo https://github.com/sifear/rlox written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sifear/rlox 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" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f2bc914b33c10e5ddcc7c2f1bd610259b1181821faac7a6b7bacd9e82d5aae8
[INFO] running `Command { std: "docker" "start" "-a" "9f2bc914b33c10e5ddcc7c2f1bd610259b1181821faac7a6b7bacd9e82d5aae8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f2bc914b33c10e5ddcc7c2f1bd610259b1181821faac7a6b7bacd9e82d5aae8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f2bc914b33c10e5ddcc7c2f1bd610259b1181821faac7a6b7bacd9e82d5aae8", kill_on_drop: false }`
[INFO] [stdout] 9f2bc914b33c10e5ddcc7c2f1bd610259b1181821faac7a6b7bacd9e82d5aae8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 645ad1c6fadb913a8bba9051fa5685a15fad7626e191043cae886e771b3f6907
[INFO] running `Command { std: "docker" "start" "-a" "645ad1c6fadb913a8bba9051fa5685a15fad7626e191043cae886e771b3f6907", kill_on_drop: false }`
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Any` and `TypeId`
[INFO] [stdout]  --> src/parser.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::any::{Any, TypeId};
[INFO] [stdout]   |                ^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TypeId`
[INFO] [stdout]  --> src/parser/statement.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::any::{Any, TypeId};
[INFO] [stdout]   |                     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::BorrowMut`
[INFO] [stdout]  --> src/parser/statement.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{borrow::BorrowMut, cell::RefCell, collections::HashMap};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Any` and `TypeId`
[INFO] [stdout]  --> src/parser.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::any::{Any, TypeId};
[INFO] [stdout]   |                ^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TypeId`
[INFO] [stdout]  --> src/parser/statement.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::any::{Any, TypeId};
[INFO] [stdout]   |                     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::BorrowMut`
[INFO] [stdout]  --> src/parser/statement.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::{borrow::BorrowMut, cell::RefCell, collections::HashMap};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/parser/expression.rs:93:24
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn evaluate(&self, env: &Environment) -> Result<Literal, RuntimeError> {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/parser/expression.rs:144:24
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn evaluate(&self, env: &Environment) -> Result<Literal, RuntimeError> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/parser/expression.rs:93:24
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn evaluate(&self, env: &Environment) -> Result<Literal, RuntimeError> {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser/expression.rs:264:13
[INFO] [stdout]     |
[INFO] [stdout] 264 |         let mut left = self.left.evaluate(env);
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/parser/expression.rs:144:24
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn evaluate(&self, env: &Environment) -> Result<Literal, RuntimeError> {
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/parser/expression.rs:352:17
[INFO] [stdout]     |
[INFO] [stdout] 352 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser/expression.rs:264:13
[INFO] [stdout]     |
[INFO] [stdout] 264 |         let mut left = self.left.evaluate(env);
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/parser/statement.rs:194:21
[INFO] [stdout]     |
[INFO] [stdout] 194 |                 Err(err) => {}
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/parser/expression.rs:352:17
[INFO] [stdout]     |
[INFO] [stdout] 352 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/parser/statement.rs:205:28
[INFO] [stdout]     |
[INFO] [stdout] 205 |     fn evaluate<'a>(&self, env: &'a Environment<'a>) -> Result<Literal, RuntimeError> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> src/parser.rs:90:18
[INFO] [stdout]    |
[INFO] [stdout] 90 |             Some(token) => return self.var_declaration(),
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> src/parser.rs:95:18
[INFO] [stdout]    |
[INFO] [stdout] 95 |             Some(token) => return self.if_statement(),
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:100:18
[INFO] [stdout]     |
[INFO] [stdout] 100 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:111:18
[INFO] [stdout]     |
[INFO] [stdout] 111 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:122:18
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:133:18
[INFO] [stdout]     |
[INFO] [stdout] 133 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:144:18
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:193:18
[INFO] [stdout]     |
[INFO] [stdout] 193 |             Some(token) => None,
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:195:22
[INFO] [stdout]     |
[INFO] [stdout] 195 |                 Some(token) => {
[INFO] [stdout]     |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/parser/statement.rs:194:21
[INFO] [stdout]     |
[INFO] [stdout] 194 |                 Err(err) => {}
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]    --> src/parser/statement.rs:205:28
[INFO] [stdout]     |
[INFO] [stdout] 205 |     fn evaluate<'a>(&self, env: &'a Environment<'a>) -> Result<Literal, RuntimeError> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> src/parser.rs:90:18
[INFO] [stdout]    |
[INFO] [stdout] 90 |             Some(token) => return self.var_declaration(),
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]   --> src/parser.rs:95:18
[INFO] [stdout]    |
[INFO] [stdout] 95 |             Some(token) => return self.if_statement(),
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:100:18
[INFO] [stdout]     |
[INFO] [stdout] 100 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:111:18
[INFO] [stdout]     |
[INFO] [stdout] 111 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:122:18
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:133:18
[INFO] [stdout]     |
[INFO] [stdout] 133 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:144:18
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:448:18
[INFO] [stdout]     |
[INFO] [stdout] 448 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:193:18
[INFO] [stdout]     |
[INFO] [stdout] 193 |             Some(token) => None,
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:195:22
[INFO] [stdout]     |
[INFO] [stdout] 195 |                 Some(token) => {
[INFO] [stdout]     |                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/parser.rs:521:18
[INFO] [stdout]     |
[INFO] [stdout] 521 |             Some(pos) => return Result::Ok(Box::new(Empty {})),
[INFO] [stdout]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:448:18
[INFO] [stdout]     |
[INFO] [stdout] 448 |             Some(token) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/parser.rs:842:18
[INFO] [stdout]     |
[INFO] [stdout] 842 |             Some(a) => {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:852:30
[INFO] [stdout]     |
[INFO] [stdout] 852 |                         Some(token) => {
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/parser.rs:521:18
[INFO] [stdout]     |
[INFO] [stdout] 521 |             Some(pos) => return Result::Ok(Box::new(Empty {})),
[INFO] [stdout]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/environment.rs:27:18
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Some(val) => {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/parser.rs:842:18
[INFO] [stdout]     |
[INFO] [stdout] 842 |             Some(a) => {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/parser.rs:852:30
[INFO] [stdout]     |
[INFO] [stdout] 852 |                         Some(token) => {
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]   --> src/environment.rs:27:18
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Some(val) => {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> src/scanner.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let tokens = match self.scan_tokens(0) {
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `current` is assigned to, but never used
[INFO] [stdout]   --> src/scanner.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let mut current = start;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_current` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]   --> src/scanner.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let tokens = match self.scan_tokens(0) {
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `current` is assigned to, but never used
[INFO] [stdout]   --> src/scanner.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let mut current = start;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_current` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/interpreter.rs:29:20
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 Ok(value) => {},
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `BinaryMissingLHS` is never constructed
[INFO] [stdout]  --> src/parser/parser_error.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum ParserErrorType {
[INFO] [stdout]   |          --------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8 |     BinaryMissingLHS,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParserErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is` is never used
[INFO] [stdout]   --> src/parser/statement.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl dyn Statement {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 16 |     // Helper method to check the type
[INFO] [stdout] 17 |     fn is<T: Any>(&self) -> bool {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `had_errors` is never read
[INFO] [stdout]   --> src/scanner.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Scanner<'a> {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     had_errors: bool,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ComparisonInvalidOperator`, `ArithmeticInvalidOperator`, `IdentifierExpedcted`, and `InvalidAssignmentTarget` are never constructed
[INFO] [stdout]   --> src/interpreter/runtime_error.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub enum RuntimeErrorType {
[INFO] [stdout]    |          ---------------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8  |     ComparisonInvalidOperator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9  |     ArithmeticInvalidOperator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     IdentifierExpedcted,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     InvalidAssignmentTarget,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RuntimeErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/interpreter.rs:29:20
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 Ok(value) => {},
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:229:9
[INFO] [stdout]     |
[INFO] [stdout] 229 |         self.consume(&TokenType::Semicolon);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 229 |         let _ = self.consume(&TokenType::Semicolon);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:385:13
[INFO] [stdout]     |
[INFO] [stdout] 385 |             self.consume(&TokenType::Else);
[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] 385 |             let _ = self.consume(&TokenType::Else);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `BinaryMissingLHS` is never constructed
[INFO] [stdout]  --> src/parser/parser_error.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum ParserErrorType {
[INFO] [stdout]   |          --------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8 |     BinaryMissingLHS,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParserErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is` is never used
[INFO] [stdout]   --> src/parser/statement.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl dyn Statement {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 16 |     // Helper method to check the type
[INFO] [stdout] 17 |     fn is<T: Any>(&self) -> bool {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `had_errors` is never read
[INFO] [stdout]   --> src/scanner.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Scanner<'a> {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     had_errors: bool,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ComparisonInvalidOperator`, `ArithmeticInvalidOperator`, `IdentifierExpedcted`, and `InvalidAssignmentTarget` are never constructed
[INFO] [stdout]   --> src/interpreter/runtime_error.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub enum RuntimeErrorType {
[INFO] [stdout]    |          ---------------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8  |     ComparisonInvalidOperator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9  |     ArithmeticInvalidOperator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     IdentifierExpedcted,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     InvalidAssignmentTarget,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RuntimeErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:229:9
[INFO] [stdout]     |
[INFO] [stdout] 229 |         self.consume(&TokenType::Semicolon);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 229 |         let _ = self.consume(&TokenType::Semicolon);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:385:13
[INFO] [stdout]     |
[INFO] [stdout] 385 |             self.consume(&TokenType::Else);
[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] 385 |             let _ = self.consume(&TokenType::Else);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "645ad1c6fadb913a8bba9051fa5685a15fad7626e191043cae886e771b3f6907", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "645ad1c6fadb913a8bba9051fa5685a15fad7626e191043cae886e771b3f6907", kill_on_drop: false }`
[INFO] [stdout] 645ad1c6fadb913a8bba9051fa5685a15fad7626e191043cae886e771b3f6907
[INFO] checking sifear/rlox against try#09146510cdb33d15474a35fde290187a88b1cf35 for pr-128351
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsifear%2Frlox" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sifear/rlox on toolchain 09146510cdb33d15474a35fde290187a88b1cf35
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sifear/rlox
[INFO] finished tweaking git repo https://github.com/sifear/rlox
[INFO] tweaked toml for git repo https://github.com/sifear/rlox written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sifear/rlox 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" "+09146510cdb33d15474a35fde290187a88b1cf35" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: mkdir /var/lib/docker/overlay2/e26829c36f32707f1dfb5058b1727e21bff77cac5ead70600716e8e8fdbcb141-init: no space left on device
[INFO] checking sifear/rlox against try#09146510cdb33d15474a35fde290187a88b1cf35 for pr-128351
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsifear%2Frlox" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] [stderr] fatal: unable to write new index file
[INFO] [stderr] warning: Clone succeeded, but checkout failed.
[INFO] [stderr] You can inspect what was checked out with 'git status'
[INFO] [stderr] and retry with 'git restore --source=HEAD :/'
[INFO] [stderr] 
[INFO] checking sifear/rlox against try#09146510cdb33d15474a35fde290187a88b1cf35 for pr-128351
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsifear%2Frlox" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] [stderr] fatal: unable to write new index file
[INFO] [stderr] warning: Clone succeeded, but checkout failed.
[INFO] [stderr] You can inspect what was checked out with 'git status'
[INFO] [stderr] and retry with 'git restore --source=HEAD :/'
[INFO] [stderr] 
[INFO] checking sifear/rlox against try#09146510cdb33d15474a35fde290187a88b1cf35 for pr-128351
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsifear%2Frlox" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] [stderr] fatal: update_ref failed for ref 'HEAD': cannot update the ref 'refs/heads/main': unable to append to '/workspace/builds/worker-5-tc2/source/.git/logs/refs/heads/main': No space left on device
[INFO] [stderr] fatal: the remote end hung up unexpectedly
[INFO] checking sifear/rlox against try#09146510cdb33d15474a35fde290187a88b1cf35 for pr-128351
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsifear%2Frlox" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] [stderr] fatal: update_ref failed for ref 'HEAD': cannot update the ref 'refs/heads/main': unable to append to '/workspace/builds/worker-5-tc2/source/.git/logs/refs/heads/main': No space left on device
[INFO] [stderr] fatal: the remote end hung up unexpectedly
[ERROR] this task or one of its parent failed!
[ERROR] failed to checkout https://github.com/sifear/rlox
[ERROR] caused by: command failed: exit status: 128
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.