[INFO] fetching crate backtracking 0.1.0...
[INFO] checking backtracking-0.1.0 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608
[INFO] extracting crate backtracking 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate backtracking 0.1.0
[INFO] finished tweaking crates.io crate backtracking 0.1.0
[INFO] tweaked toml for crates.io crate backtracking 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate backtracking 0.1.0 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate backtracking 0.1.0 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb434dc72c5ed61e6f0b0cccd18581b48c971111e1e34a0473e3feb71ec609f3
[INFO] running `Command { std: "docker" "start" "-a" "eb434dc72c5ed61e6f0b0cccd18581b48c971111e1e34a0473e3feb71ec609f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb434dc72c5ed61e6f0b0cccd18581b48c971111e1e34a0473e3feb71ec609f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb434dc72c5ed61e6f0b0cccd18581b48c971111e1e34a0473e3feb71ec609f3", kill_on_drop: false }`
[INFO] [stdout] eb434dc72c5ed61e6f0b0cccd18581b48c971111e1e34a0473e3feb71ec609f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7578f2cec99dac35fbb2105523bb55a1b7a8c8b2f42439e3eee1fe8a82d4594
[INFO] running `Command { std: "docker" "start" "-a" "e7578f2cec99dac35fbb2105523bb55a1b7a8c8b2f42439e3eee1fe8a82d4594", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "/var/lib/crater-agent-workspace/rustup-home" to rootfs at "/opt/rustwide/rustup-home": create mountpoint for /opt/rustwide/rustup-home mount: mkdirat /var/lib/docker/overlay2/73ace22a2d51ba642e7ba203ee589251991350670464367500674b629c058607/merged/opt/rustwide/rustup-home: no space left on device: unknown
[INFO] running `Command { std: "docker" "inspect" "e7578f2cec99dac35fbb2105523bb55a1b7a8c8b2f42439e3eee1fe8a82d4594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7578f2cec99dac35fbb2105523bb55a1b7a8c8b2f42439e3eee1fe8a82d4594", kill_on_drop: false }`
[INFO] [stdout] e7578f2cec99dac35fbb2105523bb55a1b7a8c8b2f42439e3eee1fe8a82d4594