[INFO] cloning repository https://github.com/pixix4/Robots-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pixix4/Robots-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpixix4%2FRobots-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpixix4%2FRobots-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ee861e53645de24e0b8b65625a1496d0fb557f1
[INFO] checking pixix4/Robots-Rust against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpixix4%2FRobots-Rust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pixix4/Robots-Rust on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-9/source/.cargo/config
[INFO] started tweaking git repo https://github.com/pixix4/Robots-Rust
[INFO] finished tweaking git repo https://github.com/pixix4/Robots-Rust
[INFO] tweaked toml for git repo https://github.com/pixix4/Robots-Rust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/pixix4/Robots-Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae2e4b63dde8258ee0a683bba76e8102edd7fedcb01dcd3b437a925b76b12ab8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ae2e4b63dde8258ee0a683bba76e8102edd7fedcb01dcd3b437a925b76b12ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae2e4b63dde8258ee0a683bba76e8102edd7fedcb01dcd3b437a925b76b12ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae2e4b63dde8258ee0a683bba76e8102edd7fedcb01dcd3b437a925b76b12ab8", kill_on_drop: false }`
[INFO] [stdout] ae2e4b63dde8258ee0a683bba76e8102edd7fedcb01dcd3b437a925b76b12ab8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6534b026c0acf9512e723a4a41651a4425a7c835e52e3b827963494f2369ad85
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6534b026c0acf9512e723a4a41651a4425a7c835e52e3b827963494f2369ad85", kill_on_drop: false }`
[INFO] [stderr]     Checking ev3dev-lang-rust v0.4.0
[INFO] [stderr]     Checking robots-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Stop`
[INFO] [stdout]    --> src/network.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     Stop,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Stop`
[INFO] [stdout]    --> src/driving.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 |     Stop,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Stop`
[INFO] [stdout]    --> src/network.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     Stop,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Stop`
[INFO] [stdout]    --> src/driving.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 |     Stop,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "6534b026c0acf9512e723a4a41651a4425a7c835e52e3b827963494f2369ad85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6534b026c0acf9512e723a4a41651a4425a7c835e52e3b827963494f2369ad85", kill_on_drop: false }`
[INFO] [stdout] 6534b026c0acf9512e723a4a41651a4425a7c835e52e3b827963494f2369ad85