[INFO] fetching crate isomdl 0.1.0...
[INFO] checking isomdl-0.1.0 against master#5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea for pr-124336
[INFO] extracting crate isomdl 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate isomdl 0.1.0 on toolchain 5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate isomdl 0.1.0
[INFO] finished tweaking crates.io crate isomdl 0.1.0
[INFO] tweaked toml for crates.io crate isomdl 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73ad8e9fa4141cfbe54fa7ca201d2fbb22b9282c397dfcfc20c0e604f7713b18
[INFO] running `Command { std: "docker" "start" "-a" "73ad8e9fa4141cfbe54fa7ca201d2fbb22b9282c397dfcfc20c0e604f7713b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73ad8e9fa4141cfbe54fa7ca201d2fbb22b9282c397dfcfc20c0e604f7713b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73ad8e9fa4141cfbe54fa7ca201d2fbb22b9282c397dfcfc20c0e604f7713b18", kill_on_drop: false }`
[INFO] [stdout] 73ad8e9fa4141cfbe54fa7ca201d2fbb22b9282c397dfcfc20c0e604f7713b18
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+5557f8c9d08d7f3f680943dcf97b6d4a7eb13aea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ca2297ac3fa7537df1cf3096f5dc833195a7133b5888b9df5346453d99ca86a
[INFO] running `Command { std: "docker" "start" "-a" "7ca2297ac3fa7537df1cf3096f5dc833195a7133b5888b9df5346453d99ca86a", kill_on_drop: false }`
[INFO] [stderr]     Checking isomdl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] running `Command { std: "docker" "inspect" "7ca2297ac3fa7537df1cf3096f5dc833195a7133b5888b9df5346453d99ca86a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ca2297ac3fa7537df1cf3096f5dc833195a7133b5888b9df5346453d99ca86a", kill_on_drop: false }`
[INFO] [stdout] 7ca2297ac3fa7537df1cf3096f5dc833195a7133b5888b9df5346453d99ca86a
[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.
[INFO] checking isomdl-0.1.0 against try#311f8b6ca41358db8ae08490a9ca0916f11e9de3 for pr-124336
[INFO] extracting crate isomdl 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate isomdl 0.1.0 on toolchain 311f8b6ca41358db8ae08490a9ca0916f11e9de3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate isomdl 0.1.0
[INFO] finished tweaking crates.io crate isomdl 0.1.0
[INFO] tweaked toml for crates.io crate isomdl 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 774c86b91757b0860f4cd357aff375aad8fcd670a208d354077eef307ae5c16e
[INFO] running `Command { std: "docker" "start" "-a" "774c86b91757b0860f4cd357aff375aad8fcd670a208d354077eef307ae5c16e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "774c86b91757b0860f4cd357aff375aad8fcd670a208d354077eef307ae5c16e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "774c86b91757b0860f4cd357aff375aad8fcd670a208d354077eef307ae5c16e", kill_on_drop: false }`
[INFO] [stdout] 774c86b91757b0860f4cd357aff375aad8fcd670a208d354077eef307ae5c16e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+311f8b6ca41358db8ae08490a9ca0916f11e9de3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b8614722c105f6628098cbc2e0f5a7be7dfc543f8cc0101ca6a9f97cb6c64d7
[INFO] running `Command { std: "docker" "start" "-a" "1b8614722c105f6628098cbc2e0f5a7be7dfc543f8cc0101ca6a9f97cb6c64d7", kill_on_drop: false }`
[INFO] [stderr]     Checking isomdl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] running `Command { std: "docker" "inspect" "1b8614722c105f6628098cbc2e0f5a7be7dfc543f8cc0101ca6a9f97cb6c64d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b8614722c105f6628098cbc2e0f5a7be7dfc543f8cc0101ca6a9f97cb6c64d7", kill_on_drop: false }`
[INFO] [stdout] 1b8614722c105f6628098cbc2e0f5a7be7dfc543f8cc0101ca6a9f97cb6c64d7