[INFO] cloning repository https://github.com/signal-fish/rust-basics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/signal-fish/rust-basics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsignal-fish%2Frust-basics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsignal-fish%2Frust-basics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d5fe39d4538f04639522bd85d9fc333b13a4f6f6
[INFO] checking signal-fish/rust-basics against master#667247db71ea18c4130dd018d060e7f09d589490 for pr-140824
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsignal-fish%2Frust-basics" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/signal-fish/rust-basics on toolchain 667247db71ea18c4130dd018d060e7f09d589490
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+667247db71ea18c4130dd018d060e7f09d589490" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/signal-fish/rust-basics
[INFO] finished tweaking git repo https://github.com/signal-fish/rust-basics
[INFO] tweaked toml for git repo https://github.com/signal-fish/rust-basics written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/signal-fish/rust-basics 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" "+667247db71ea18c4130dd018d060e7f09d589490" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+667247db71ea18c4130dd018d060e7f09d589490" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e480ac0a2ca229832cabb5d8571108c8b38ae847dea8f1e8fb3c780cedc36702
[INFO] running `Command { std: "docker" "start" "-a" "e480ac0a2ca229832cabb5d8571108c8b38ae847dea8f1e8fb3c780cedc36702", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e480ac0a2ca229832cabb5d8571108c8b38ae847dea8f1e8fb3c780cedc36702", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e480ac0a2ca229832cabb5d8571108c8b38ae847dea8f1e8fb3c780cedc36702", kill_on_drop: false }`
[INFO] [stdout] e480ac0a2ca229832cabb5d8571108c8b38ae847dea8f1e8fb3c780cedc36702
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+667247db71ea18c4130dd018d060e7f09d589490" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42ff56ab5b45a1949b2b64b5ba976b4817914a5b37f1918b9380dc62ec244771
[INFO] running `Command { std: "docker" "start" "-a" "42ff56ab5b45a1949b2b64b5ba976b4817914a5b37f1918b9380dc62ec244771", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-basics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `name` and `gender` are never read
[INFO] [stdout]    --> src/main.rs:467:5
[INFO] [stdout]     |
[INFO] [stdout] 466 | struct Person {
[INFO] [stdout]     |        ------ fields in this struct
[INFO] [stdout] 467 |     name: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 468 |     gender: Gender
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Person` 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: fields `name` and `gender` are never read
[INFO] [stdout]    --> src/main.rs:467:5
[INFO] [stdout]     |
[INFO] [stdout] 466 | struct Person {
[INFO] [stdout]     |        ------ fields in this struct
[INFO] [stdout] 467 |     name: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 468 |     gender: Gender
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Person` 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "42ff56ab5b45a1949b2b64b5ba976b4817914a5b37f1918b9380dc62ec244771", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42ff56ab5b45a1949b2b64b5ba976b4817914a5b37f1918b9380dc62ec244771", kill_on_drop: false }`
[INFO] [stdout] 42ff56ab5b45a1949b2b64b5ba976b4817914a5b37f1918b9380dc62ec244771