[INFO] cloning repository https://github.com/mimuw-jnp2-rust/small-task-2-communications-grzenow4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mimuw-jnp2-rust/small-task-2-communications-grzenow4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-2-communications-grzenow4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-2-communications-grzenow4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 83fae3c8d1cae9bbc6128cbe1d50c3021d7cd307
[INFO] checking mimuw-jnp2-rust/small-task-2-communications-grzenow4 against try#ff47dd48ed0d02534055e0033cf766ce528f8ebc for pr-99447
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmimuw-jnp2-rust%2Fsmall-task-2-communications-grzenow4" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mimuw-jnp2-rust/small-task-2-communications-grzenow4 on toolchain ff47dd48ed0d02534055e0033cf766ce528f8ebc
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff47dd48ed0d02534055e0033cf766ce528f8ebc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mimuw-jnp2-rust/small-task-2-communications-grzenow4
[INFO] finished tweaking git repo https://github.com/mimuw-jnp2-rust/small-task-2-communications-grzenow4
[INFO] tweaked toml for git repo https://github.com/mimuw-jnp2-rust/small-task-2-communications-grzenow4 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/mimuw-jnp2-rust/small-task-2-communications-grzenow4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff47dd48ed0d02534055e0033cf766ce528f8ebc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+ff47dd48ed0d02534055e0033cf766ce528f8ebc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7fa062a027d7f47dea1259470c1c0781717fe7a438662b91ba063f2737ac7bf
[INFO] running `Command { std: "docker" "start" "-a" "c7fa062a027d7f47dea1259470c1c0781717fe7a438662b91ba063f2737ac7bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7fa062a027d7f47dea1259470c1c0781717fe7a438662b91ba063f2737ac7bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7fa062a027d7f47dea1259470c1c0781717fe7a438662b91ba063f2737ac7bf", kill_on_drop: false }`
[INFO] [stdout] c7fa062a027d7f47dea1259470c1c0781717fe7a438662b91ba063f2737ac7bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+ff47dd48ed0d02534055e0033cf766ce528f8ebc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63d9852a602ddc1d41c6d030855dc6a52a1104f117e99480b055e4a6a12c8755
[INFO] running `Command { std: "docker" "start" "-a" "63d9852a602ddc1d41c6d030855dc6a52a1104f117e99480b055e4a6a12c8755", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "63d9852a602ddc1d41c6d030855dc6a52a1104f117e99480b055e4a6a12c8755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63d9852a602ddc1d41c6d030855dc6a52a1104f117e99480b055e4a6a12c8755", kill_on_drop: false }`
[INFO] [stdout] 63d9852a602ddc1d41c6d030855dc6a52a1104f117e99480b055e4a6a12c8755