[INFO] cloning repository https://github.com/dckc/snakes-ladders
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dckc/snakes-ladders" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdckc%2Fsnakes-ladders", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdckc%2Fsnakes-ladders'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fea15b696ffd3eabcea308a679d6f857a29588f7
[INFO] checking dckc/snakes-ladders against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdckc%2Fsnakes-ladders" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dckc/snakes-ladders on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dckc/snakes-ladders
[INFO] finished tweaking git repo https://github.com/dckc/snakes-ladders
[INFO] tweaked toml for git repo https://github.com/dckc/snakes-ladders written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/dckc/snakes-ladders already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clippy v0.0.123
[INFO] [stderr]   Downloaded syn v0.11.10
[INFO] [stderr]   Downloaded serde_derive v0.9.13
[INFO] [stderr]   Downloaded serde v0.9.13
[INFO] [stderr]   Downloaded clippy_lints v0.0.123
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8943e8bed4959b2ed4019606841780d5d7085ff87b53f341738c09077cbdfac1
[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" "8943e8bed4959b2ed4019606841780d5d7085ff87b53f341738c09077cbdfac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8943e8bed4959b2ed4019606841780d5d7085ff87b53f341738c09077cbdfac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8943e8bed4959b2ed4019606841780d5d7085ff87b53f341738c09077cbdfac1", kill_on_drop: false }`
[INFO] [stdout] 8943e8bed4959b2ed4019606841780d5d7085ff87b53f341738c09077cbdfac1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4877c4a5f8fcd511da090d32637128ad8a6dd31796f55c0c934b3cf7e81a463
[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" "e4877c4a5f8fcd511da090d32637128ad8a6dd31796f55c0c934b3cf7e81a463", kill_on_drop: false }`
[INFO] [stderr]     Checking assign4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "e4877c4a5f8fcd511da090d32637128ad8a6dd31796f55c0c934b3cf7e81a463", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4877c4a5f8fcd511da090d32637128ad8a6dd31796f55c0c934b3cf7e81a463", kill_on_drop: false }`
[INFO] [stdout] e4877c4a5f8fcd511da090d32637128ad8a6dd31796f55c0c934b3cf7e81a463