[INFO] cloning repository https://github.com/kai-nobutou/crafting_interpreter_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kai-nobutou/crafting_interpreter_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkai-nobutou%2Fcrafting_interpreter_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkai-nobutou%2Fcrafting_interpreter_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 579c6f27114cf98f88e32650c2055556239e2fa8
[INFO] building kai-nobutou/crafting_interpreter_rust against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkai-nobutou%2Fcrafting_interpreter_rust" "/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/kai-nobutou/crafting_interpreter_rust on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kai-nobutou/crafting_interpreter_rust
[INFO] finished tweaking git repo https://github.com/kai-nobutou/crafting_interpreter_rust
[INFO] tweaked toml for git repo https://github.com/kai-nobutou/crafting_interpreter_rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kai-nobutou/crafting_interpreter_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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1afee0f33504237415dc99e07436c734a14045f3086242647c7a15ea78a33834
[INFO] running `Command { std: "docker" "start" "-a" "1afee0f33504237415dc99e07436c734a14045f3086242647c7a15ea78a33834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1afee0f33504237415dc99e07436c734a14045f3086242647c7a15ea78a33834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1afee0f33504237415dc99e07436c734a14045f3086242647c7a15ea78a33834", kill_on_drop: false }`
[INFO] [stdout] 1afee0f33504237415dc99e07436c734a14045f3086242647c7a15ea78a33834
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f01eb525eacf51c2620863722f92cc31bb02b8d05110d60033467fe6b65c71e
[INFO] running `Command { std: "docker" "start" "-a" "6f01eb525eacf51c2620863722f92cc31bb02b8d05110d60033467fe6b65c71e", kill_on_drop: false }`
[INFO] [stderr]    Compiling crafting_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Stmt`
[INFO] [stdout]  --> src/lox/printer.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lox::ast::{Expr, Stmt};
[INFO] [stdout]   |                             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `had_error` is never read
[INFO] [stdout]   --> src/lox/evaluator.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Evaluator {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 45 |     environment: Environment,
[INFO] [stdout] 46 |     had_error: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stmt`
[INFO] [stdout]  --> src/lox/printer.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lox::ast::{Expr, Stmt};
[INFO] [stdout]   |                             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]  --> src/lox/token.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Token {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     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]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_number` is never used
[INFO] [stdout]   --> src/lox/token_type.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl LiteralValue {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 75 |     pub fn as_number(&self) -> Option<f64> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `While` is never constructed
[INFO] [stdout]   --> src/lox/ast.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub enum Stmt {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 40 |     While(Expr, Box<Stmt>),
[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 `had_error` is never read
[INFO] [stdout]   --> src/lox/evaluator.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Evaluator {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 45 |     environment: Environment,
[INFO] [stdout] 46 |     had_error: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "6f01eb525eacf51c2620863722f92cc31bb02b8d05110d60033467fe6b65c71e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f01eb525eacf51c2620863722f92cc31bb02b8d05110d60033467fe6b65c71e", kill_on_drop: false }`
[INFO] [stdout] 6f01eb525eacf51c2620863722f92cc31bb02b8d05110d60033467fe6b65c71e
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fb9de60c79c7ccef263a3d183a25081298f754ce3b3d8ec94497bfe315e35d2
[INFO] running `Command { std: "docker" "start" "-a" "1fb9de60c79c7ccef263a3d183a25081298f754ce3b3d8ec94497bfe315e35d2", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `Stmt`
[INFO] [stdout]  --> src/lox/printer.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lox::ast::{Expr, Stmt};
[INFO] [stdout]   |                             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling crafting_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `had_error` is never read
[INFO] [stdout]   --> src/lox/evaluator.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Evaluator {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 45 |     environment: Environment,
[INFO] [stdout] 46 |     had_error: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stmt`
[INFO] [stdout]  --> src/lox/printer.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lox::ast::{Expr, Stmt};
[INFO] [stdout]   |                             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]  --> src/lox/token.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Token {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     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]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_number` is never used
[INFO] [stdout]   --> src/lox/token_type.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl LiteralValue {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 75 |     pub fn as_number(&self) -> Option<f64> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `While` is never constructed
[INFO] [stdout]   --> src/lox/ast.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub enum Stmt {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 40 |     While(Expr, Box<Stmt>),
[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 `had_error` is never read
[INFO] [stdout]   --> src/lox/evaluator.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Evaluator {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 45 |     environment: Environment,
[INFO] [stdout] 46 |     had_error: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stmt`
[INFO] [stdout]  --> src/lox/printer.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lox::ast::{Expr, Stmt};
[INFO] [stdout]   |                             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stmt`
[INFO] [stdout]  --> src/lox/printer.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lox::ast::{Expr, Stmt};
[INFO] [stdout]   |                             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `line` is never read
[INFO] [stdout]  --> src/lox/token.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Token {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     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]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_number` is never used
[INFO] [stdout]   --> src/lox/token_type.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl LiteralValue {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 75 |     pub fn as_number(&self) -> Option<f64> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `While` is never constructed
[INFO] [stdout]   --> src/lox/ast.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub enum Stmt {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 40 |     While(Expr, Box<Stmt>),
[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 `had_error` is never read
[INFO] [stdout]   --> src/lox/evaluator.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Evaluator {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 45 |     environment: Environment,
[INFO] [stdout] 46 |     had_error: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `had_error` is never read
[INFO] [stdout]   --> src/lox/evaluator.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Evaluator {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 45 |     environment: Environment,
[INFO] [stdout] 46 |     had_error: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "1fb9de60c79c7ccef263a3d183a25081298f754ce3b3d8ec94497bfe315e35d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fb9de60c79c7ccef263a3d183a25081298f754ce3b3d8ec94497bfe315e35d2", kill_on_drop: false }`
[INFO] [stdout] 1fb9de60c79c7ccef263a3d183a25081298f754ce3b3d8ec94497bfe315e35d2