[INFO] cloning repository https://github.com/uberballo/lox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/uberballo/lox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuberballo%2Flox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuberballo%2Flox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 078f71939901283c652c9203ccca5483e9b06fd4
[INFO] checking uberballo/lox against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuberballo%2Flox" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/uberballo/lox on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/uberballo/lox
[INFO] finished tweaking git repo https://github.com/uberballo/lox
[INFO] tweaked toml for git repo https://github.com/uberballo/lox written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/uberballo/lox 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6b7a3edc65fee1afe30b87684f1decf253279ec63d480202e20cea95713a569
[INFO] running `Command { std: "docker" "start" "-a" "d6b7a3edc65fee1afe30b87684f1decf253279ec63d480202e20cea95713a569", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6b7a3edc65fee1afe30b87684f1decf253279ec63d480202e20cea95713a569", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6b7a3edc65fee1afe30b87684f1decf253279ec63d480202e20cea95713a569", kill_on_drop: false }`
[INFO] [stdout] d6b7a3edc65fee1afe30b87684f1decf253279ec63d480202e20cea95713a569
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5aed8738487225f12adb06972f81459d1ae70734cd878fe37c0eae1644e8069b
[INFO] running `Command { std: "docker" "start" "-a" "5aed8738487225f12adb06972f81459d1ae70734cd878fe37c0eae1644e8069b", kill_on_drop: false }`
[INFO] [stderr]     Checking lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Expr`, `LiteralValue`, and `Stmt`
[INFO] [stdout]  --> src/environment.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use crate::expr::{Expr, LiteralValue, Stmt};
[INFO] [stdout]   |                       ^^^^  ^^^^^^^^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]  --> src/environment.rs:4:31
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use crate::token::{Token, TokenType};
[INFO] [stdout]   |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]  --> src/error.rs:4:31
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use crate::token::{Token, TokenType};
[INFO] [stdout]   |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IfStmt`, `Var`, and `WhileStmt`
[INFO] [stdout]  --> src/parser.rs:2:29
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use crate::expr::{Expr, IfStmt, LiteralValue, Stmt, Var, WhileStmt};
[INFO] [stdout]   |                             ^^^^^^                      ^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Expr`, `LiteralValue`, and `Stmt`
[INFO] [stdout]  --> src/environment.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use crate::expr::{Expr, LiteralValue, Stmt};
[INFO] [stdout]   |                       ^^^^  ^^^^^^^^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]  --> src/environment.rs:4:31
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use crate::token::{Token, TokenType};
[INFO] [stdout]   |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]  --> src/error.rs:4:31
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use crate::token::{Token, TokenType};
[INFO] [stdout]   |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IfStmt`, `Var`, and `WhileStmt`
[INFO] [stdout]  --> src/parser.rs:2:29
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use crate::expr::{Expr, IfStmt, LiteralValue, Stmt, Var, WhileStmt};
[INFO] [stdout]   |                             ^^^^^^                      ^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `token` and `message` are never read
[INFO] [stdout]  --> src/error.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ParserError {
[INFO] [stdout]   |            ----------- fields in this struct
[INFO] [stdout] 8 |     pub token: Token,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 9 |     pub message: String,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParserError` 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: field `group` is never read
[INFO] [stdout]   --> src/expr.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     Grouping {
[INFO] [stdout]    |     -------- field in this variant
[INFO] [stdout] 33 |         group: Box<Expr>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Var` is never constructed
[INFO] [stdout]   --> src/expr.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct Var {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Var` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IfStmt` is never constructed
[INFO] [stdout]   --> src/expr.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub struct IfStmt {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IfStmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WhileStmt` is never constructed
[INFO] [stdout]   --> src/expr.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub struct WhileStmt {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WhileStmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]   --> src/expr.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     Return {
[INFO] [stdout]    |     ------ field in this variant
[INFO] [stdout] 83 |         keyword: Token,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `globals` is never read
[INFO] [stdout]   --> src/interpreter.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Interpreter {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 13 |     pub globals: Rc<RefCell<Environment>>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]   --> src/token.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 56 |     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] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `token` and `message` are never read
[INFO] [stdout]  --> src/error.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ParserError {
[INFO] [stdout]   |            ----------- fields in this struct
[INFO] [stdout] 8 |     pub token: Token,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 9 |     pub message: String,
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParserError` 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: field `group` is never read
[INFO] [stdout]   --> src/expr.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     Grouping {
[INFO] [stdout]    |     -------- field in this variant
[INFO] [stdout] 33 |         group: Box<Expr>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Var` is never constructed
[INFO] [stdout]   --> src/expr.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct Var {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Var` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IfStmt` is never constructed
[INFO] [stdout]   --> src/expr.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub struct IfStmt {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IfStmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WhileStmt` is never constructed
[INFO] [stdout]   --> src/expr.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub struct WhileStmt {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WhileStmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `keyword` is never read
[INFO] [stdout]   --> src/expr.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     Return {
[INFO] [stdout]    |     ------ field in this variant
[INFO] [stdout] 83 |         keyword: Token,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `globals` is never read
[INFO] [stdout]   --> src/interpreter.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Interpreter {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 13 |     pub globals: Rc<RefCell<Environment>>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]   --> src/token.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 56 |     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] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "5aed8738487225f12adb06972f81459d1ae70734cd878fe37c0eae1644e8069b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5aed8738487225f12adb06972f81459d1ae70734cd878fe37c0eae1644e8069b", kill_on_drop: false }`
[INFO] [stdout] 5aed8738487225f12adb06972f81459d1ae70734cd878fe37c0eae1644e8069b