[INFO] cloning repository https://github.com/jamesgaitan/modern_compiler_implementation_in_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jamesgaitan/modern_compiler_implementation_in_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesgaitan%2Fmodern_compiler_implementation_in_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesgaitan%2Fmodern_compiler_implementation_in_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18dd0ce41320314619016b94ceeeeb2361da13da
[INFO] checking jamesgaitan/modern_compiler_implementation_in_rust against master#e4106065bf1bb515935d5d024e8d9c86454e2b22 for pr-112160
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesgaitan%2Fmodern_compiler_implementation_in_rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jamesgaitan/modern_compiler_implementation_in_rust on toolchain e4106065bf1bb515935d5d024e8d9c86454e2b22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jamesgaitan/modern_compiler_implementation_in_rust
[INFO] finished tweaking git repo https://github.com/jamesgaitan/modern_compiler_implementation_in_rust
[INFO] tweaked toml for git repo https://github.com/jamesgaitan/modern_compiler_implementation_in_rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jamesgaitan/modern_compiler_implementation_in_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" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 316838f333bc32157dde1f9cb49ba8681f58bca7c34a3be25ca8883a6e9f34cd
[INFO] running `Command { std: "docker" "start" "-a" "316838f333bc32157dde1f9cb49ba8681f58bca7c34a3be25ca8883a6e9f34cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "316838f333bc32157dde1f9cb49ba8681f58bca7c34a3be25ca8883a6e9f34cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "316838f333bc32157dde1f9cb49ba8681f58bca7c34a3be25ca8883a6e9f34cd", kill_on_drop: false }`
[INFO] [stdout] 316838f333bc32157dde1f9cb49ba8681f58bca7c34a3be25ca8883a6e9f34cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e4106065bf1bb515935d5d024e8d9c86454e2b22" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6cc9529d660474d22a5124e9cdc4f9a30c4afb71d0d3724ff4df9a39dd1af753
[INFO] running `Command { std: "docker" "start" "-a" "6cc9529d660474d22a5124e9cdc4f9a30c4afb71d0d3724ff4df9a39dd1af753", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking modern_compiler_implementation_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Div` is never constructed
[INFO] [stdout]   --> src/chapter_1.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | enum BinOp {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 10 |     Div,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "6cc9529d660474d22a5124e9cdc4f9a30c4afb71d0d3724ff4df9a39dd1af753", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cc9529d660474d22a5124e9cdc4f9a30c4afb71d0d3724ff4df9a39dd1af753", kill_on_drop: false }`
[INFO] [stdout] 6cc9529d660474d22a5124e9cdc4f9a30c4afb71d0d3724ff4df9a39dd1af753