[INFO] fetching crate opt_struct 0.1.4...
[INFO] checking opt_struct-0.1.4 against master#2a023bf80a6fbd6a06d5460a34eb247b986286ed for pr-143764
[INFO] extracting crate opt_struct 0.1.4 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate opt_struct 0.1.4
[INFO] finished tweaking crates.io crate opt_struct 0.1.4
[INFO] tweaked toml for crates.io crate opt_struct 0.1.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate opt_struct 0.1.4 on toolchain 2a023bf80a6fbd6a06d5460a34eb247b986286ed
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2a023bf80a6fbd6a06d5460a34eb247b986286ed" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate opt_struct 0.1.4 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" "+2a023bf80a6fbd6a06d5460a34eb247b986286ed" "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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2a023bf80a6fbd6a06d5460a34eb247b986286ed" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc4581b891a4331c5ea2c52d5eb76d4576c8173d92dee67f146ebae45a41e69b
[INFO] running `Command { std: "docker" "start" "-a" "bc4581b891a4331c5ea2c52d5eb76d4576c8173d92dee67f146ebae45a41e69b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc4581b891a4331c5ea2c52d5eb76d4576c8173d92dee67f146ebae45a41e69b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc4581b891a4331c5ea2c52d5eb76d4576c8173d92dee67f146ebae45a41e69b", kill_on_drop: false }`
[INFO] [stdout] bc4581b891a4331c5ea2c52d5eb76d4576c8173d92dee67f146ebae45a41e69b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2a023bf80a6fbd6a06d5460a34eb247b986286ed" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6da85f471f75ca223041dd9aaa5ee3b3c2fe878a675f6b453a429758b1e11fd5
[INFO] running `Command { std: "docker" "start" "-a" "6da85f471f75ca223041dd9aaa5ee3b3c2fe878a675f6b453a429758b1e11fd5", 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/cargo-home" to rootfs at "/opt/rustwide/cargo-home": create mountpoint for /opt/rustwide/cargo-home mount: mkdirat /var/lib/docker/overlay2/1d4e09155939816827a1fd55057b350727484f3cdc682b54584f73c901d7411a/merged/opt/rustwide/cargo-home: no space left on device: unknown
[INFO] running `Command { std: "docker" "inspect" "6da85f471f75ca223041dd9aaa5ee3b3c2fe878a675f6b453a429758b1e11fd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6da85f471f75ca223041dd9aaa5ee3b3c2fe878a675f6b453a429758b1e11fd5", kill_on_drop: false }`
[INFO] [stdout] 6da85f471f75ca223041dd9aaa5ee3b3c2fe878a675f6b453a429758b1e11fd5