[INFO] cloning repository https://github.com/Kmdell/monkey-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kmdell/monkey-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKmdell%2Fmonkey-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKmdell%2Fmonkey-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91fc827c24a40944d27298e66eca10897e59f0dc
[INFO] checking Kmdell/monkey-interpreter against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKmdell%2Fmonkey-interpreter" "/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/Kmdell/monkey-interpreter 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/Kmdell/monkey-interpreter
[INFO] finished tweaking git repo https://github.com/Kmdell/monkey-interpreter
[INFO] tweaked toml for git repo https://github.com/Kmdell/monkey-interpreter written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Kmdell/monkey-interpreter 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v2.0.22
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e10fdeb3578b7403bd30c392d139a24a772696095a378e3738ad6f961e3095f
[INFO] running `Command { std: "docker" "start" "-a" "3e10fdeb3578b7403bd30c392d139a24a772696095a378e3738ad6f961e3095f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e10fdeb3578b7403bd30c392d139a24a772696095a378e3738ad6f961e3095f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e10fdeb3578b7403bd30c392d139a24a772696095a378e3738ad6f961e3095f", kill_on_drop: false }`
[INFO] [stdout] 3e10fdeb3578b7403bd30c392d139a24a772696095a378e3738ad6f961e3095f
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 421181d8e95ef24d860dc03fa9d16f1cb4d3c8497b156c242d92da1803904213
[INFO] running `Command { std: "docker" "start" "-a" "421181d8e95ef24d860dc03fa9d16f1cb4d3c8497b156c242d92da1803904213", kill_on_drop: false }`
[INFO] [stderr]     Checking whoami v1.4.1
[INFO] [stderr]     Checking monkey-interpreter-v1 v0.1.0 (/opt/rustwide/workdir/monkey_interpreter_v1)
[INFO] [stderr]     Checking monkey-interpreter-v2 v0.1.0 (/opt/rustwide/workdir/monkey_interpreter_v2)
[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> monkey_interpreter_v2/src/evaluator/test_evaluator.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::RefCell, collections::HashMap, rc::Rc};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rc::Rc`
[INFO] [stdout]  --> monkey_interpreter_v2/src/parser/parser_test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     rc::Rc,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `into_hash` is never used
[INFO] [stdout]   --> monkey_interpreter_v1/src/ast.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub trait Node {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn into_hash(&self) -> Result<&HashLiteral, String> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `statement_node` is never used
[INFO] [stdout]   --> monkey_interpreter_v1/src/ast.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub trait Statement: Node {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] 62 |     fn statement_node(&self) {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `expression_node` is never used
[INFO] [stdout]   --> monkey_interpreter_v1/src/ast.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub trait Expression: Node {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] 66 |     fn expression_node(&self) {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `into_hash` is never used
[INFO] [stdout]   --> monkey_interpreter_v1/src/ast.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub trait Node {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 55 |     fn into_hash(&self) -> Result<&HashLiteral, String> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `statement_node` is never used
[INFO] [stdout]   --> monkey_interpreter_v1/src/ast.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub trait Statement: Node {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] 62 |     fn statement_node(&self) {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `expression_node` is never used
[INFO] [stdout]   --> monkey_interpreter_v1/src/ast.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub trait Expression: Node {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] 66 |     fn expression_node(&self) {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "421181d8e95ef24d860dc03fa9d16f1cb4d3c8497b156c242d92da1803904213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "421181d8e95ef24d860dc03fa9d16f1cb4d3c8497b156c242d92da1803904213", kill_on_drop: false }`
[INFO] [stdout] 421181d8e95ef24d860dc03fa9d16f1cb4d3c8497b156c242d92da1803904213