[INFO] fetching crate regrad 0.2.0...
[INFO] checking regrad-0.2.0 against try#5de9e0e6cf775e94e0de2003f35e183f3f77bfe8 for pr-143808
[INFO] extracting crate regrad 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate regrad 0.2.0
[INFO] finished tweaking crates.io crate regrad 0.2.0
[INFO] tweaked toml for crates.io crate regrad 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate regrad 0.2.0 on toolchain 5de9e0e6cf775e94e0de2003f35e183f3f77bfe8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate regrad 0.2.0 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" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a02f7fb51819c1b31e6a74e1edcb04b0b9c42660638cbdc7cb31936f5413620
[INFO] running `Command { std: "docker" "start" "-a" "1a02f7fb51819c1b31e6a74e1edcb04b0b9c42660638cbdc7cb31936f5413620", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a02f7fb51819c1b31e6a74e1edcb04b0b9c42660638cbdc7cb31936f5413620", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a02f7fb51819c1b31e6a74e1edcb04b0b9c42660638cbdc7cb31936f5413620", kill_on_drop: false }`
[INFO] [stdout] 1a02f7fb51819c1b31e6a74e1edcb04b0b9c42660638cbdc7cb31936f5413620
[INFO] checking regrad-0.2.0 against try#5de9e0e6cf775e94e0de2003f35e183f3f77bfe8 for pr-143808
[INFO] extracting crate regrad 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate regrad 0.2.0
[INFO] finished tweaking crates.io crate regrad 0.2.0
[INFO] tweaked toml for crates.io crate regrad 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate regrad 0.2.0 on toolchain 5de9e0e6cf775e94e0de2003f35e183f3f77bfe8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate regrad 0.2.0 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" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c21f2780827c9d7620483908e7cf43c8c91a89457ab66b9ff86e04f77bfd3b16
[INFO] running `Command { std: "docker" "start" "-a" "c21f2780827c9d7620483908e7cf43c8c91a89457ab66b9ff86e04f77bfd3b16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c21f2780827c9d7620483908e7cf43c8c91a89457ab66b9ff86e04f77bfd3b16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c21f2780827c9d7620483908e7cf43c8c91a89457ab66b9ff86e04f77bfd3b16", kill_on_drop: false }`
[INFO] [stdout] c21f2780827c9d7620483908e7cf43c8c91a89457ab66b9ff86e04f77bfd3b16
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2188d097563ae2630b2f8edfb438fcbea87f044729882c75a15acf3b68bb97db
[INFO] running `Command { std: "docker" "start" "-a" "2188d097563ae2630b2f8edfb438fcbea87f044729882c75a15acf3b68bb97db", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: mkdir /var/lib/docker/overlay2/9f9bb763f014dd7b8018d6c72a5fa17f59a0aefe52b19b04a2ef6d5cd210cece/merged: no space left on device
[INFO] running `Command { std: "docker" "inspect" "2188d097563ae2630b2f8edfb438fcbea87f044729882c75a15acf3b68bb97db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2188d097563ae2630b2f8edfb438fcbea87f044729882c75a15acf3b68bb97db", kill_on_drop: false }`
[INFO] [stdout] 2188d097563ae2630b2f8edfb438fcbea87f044729882c75a15acf3b68bb97db