[INFO] fetching crate hello-world-42 0.1.1...
[INFO] checking hello-world-42-0.1.1 against master#c3def263a44e07e09ae6d57abfc8650227fb4972 for pr-118920
[INFO] extracting crate hello-world-42 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate hello-world-42 0.1.1 on toolchain c3def263a44e07e09ae6d57abfc8650227fb4972
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c3def263a44e07e09ae6d57abfc8650227fb4972" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hello-world-42 0.1.1
[INFO] finished tweaking crates.io crate hello-world-42 0.1.1
[INFO] tweaked toml for crates.io crate hello-world-42 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate hello-world-42 0.1.1 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" "+c3def263a44e07e09ae6d57abfc8650227fb4972" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+c3def263a44e07e09ae6d57abfc8650227fb4972" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 616615bc4aa6963598b2324191024dac92124d25b21d88a6a10aaa1b04ab8572
[INFO] running `Command { std: "docker" "start" "-a" "616615bc4aa6963598b2324191024dac92124d25b21d88a6a10aaa1b04ab8572", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "616615bc4aa6963598b2324191024dac92124d25b21d88a6a10aaa1b04ab8572", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "616615bc4aa6963598b2324191024dac92124d25b21d88a6a10aaa1b04ab8572", kill_on_drop: false }`
[INFO] [stdout] 616615bc4aa6963598b2324191024dac92124d25b21d88a6a10aaa1b04ab8572
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+c3def263a44e07e09ae6d57abfc8650227fb4972" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c53b5344a89cdca5870a5af3b894b3e2a8db01e6ef3a10269c81febc1c49065f
[INFO] running `Command { std: "docker" "start" "-a" "c53b5344a89cdca5870a5af3b894b3e2a8db01e6ef3a10269c81febc1c49065f", kill_on_drop: false }`
[INFO] [stderr]     Checking hello-world-42 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "c53b5344a89cdca5870a5af3b894b3e2a8db01e6ef3a10269c81febc1c49065f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c53b5344a89cdca5870a5af3b894b3e2a8db01e6ef3a10269c81febc1c49065f", kill_on_drop: false }`
[INFO] [stdout] c53b5344a89cdca5870a5af3b894b3e2a8db01e6ef3a10269c81febc1c49065f
[ERROR] this task or one of its parent failed!
[ERROR] error sending request for url (https://crater.rust-lang.org/agent-api/record-progress): connection closed before message completed
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.