[INFO] cloning repository https://github.com/puzzithinker/rust-traffic-light-trait
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/puzzithinker/rust-traffic-light-trait" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzithinker%2Frust-traffic-light-trait", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzithinker%2Frust-traffic-light-trait'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e40947c366a2b98ac81a541f39ef0e749950fd8
[INFO] checking puzzithinker/rust-traffic-light-trait against try#b32fc44666c052e7cf07ab471bfb6f9ec571902f for pr-138676
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzithinker%2Frust-traffic-light-trait" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/puzzithinker/rust-traffic-light-trait on toolchain b32fc44666c052e7cf07ab471bfb6f9ec571902f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/puzzithinker/rust-traffic-light-trait
[INFO] finished tweaking git repo https://github.com/puzzithinker/rust-traffic-light-trait
[INFO] tweaked toml for git repo https://github.com/puzzithinker/rust-traffic-light-trait written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/puzzithinker/rust-traffic-light-trait 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" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 421a5bf8edfa6a71b30c4c579e5906768b888709937e8b0fc3f72e46681acd5a
[INFO] running `Command { std: "docker" "start" "-a" "421a5bf8edfa6a71b30c4c579e5906768b888709937e8b0fc3f72e46681acd5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "421a5bf8edfa6a71b30c4c579e5906768b888709937e8b0fc3f72e46681acd5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "421a5bf8edfa6a71b30c4c579e5906768b888709937e8b0fc3f72e46681acd5a", kill_on_drop: false }`
[INFO] [stdout] 421a5bf8edfa6a71b30c4c579e5906768b888709937e8b0fc3f72e46681acd5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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_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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+b32fc44666c052e7cf07ab471bfb6f9ec571902f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ee4cfc365c3ad615f90bd559adcb657c0663702ee2a1d4c2a972e5b90e1457c
[INFO] running `Command { std: "docker" "start" "-a" "8ee4cfc365c3ad615f90bd559adcb657c0663702ee2a1d4c2a972e5b90e1457c", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-traffic-light-trait v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Red` and `Green` are never constructed
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum TrafficLight {
[INFO] [stdout]   |      ------------ variants in this enum
[INFO] [stdout] 3 |     Red,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     Green,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Red` and `Green` are never constructed
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum TrafficLight {
[INFO] [stdout]   |      ------------ variants in this enum
[INFO] [stdout] 3 |     Red,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     Green,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "8ee4cfc365c3ad615f90bd559adcb657c0663702ee2a1d4c2a972e5b90e1457c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ee4cfc365c3ad615f90bd559adcb657c0663702ee2a1d4c2a972e5b90e1457c", kill_on_drop: false }`
[INFO] [stdout] 8ee4cfc365c3ad615f90bd559adcb657c0663702ee2a1d4c2a972e5b90e1457c