[INFO] fetching crate slog-mock-proc-macros 0.4.0...
[INFO] checking slog-mock-proc-macros-0.4.0 against master#e9182f195b8505c87c4bd055b9f6e114ccda0981 for pr-144098
[INFO] extracting crate slog-mock-proc-macros 0.4.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate slog-mock-proc-macros 0.4.0
[INFO] finished tweaking crates.io crate slog-mock-proc-macros 0.4.0
[INFO] tweaked toml for crates.io crate slog-mock-proc-macros 0.4.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate slog-mock-proc-macros 0.4.0 on toolchain e9182f195b8505c87c4bd055b9f6e114ccda0981
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.104)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "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-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41daebb528f6a56b4009ef01fe3de7faccf9af4067354ae18e72f2a7faeeda7d
[INFO] running `Command { std: "docker" "start" "-a" "41daebb528f6a56b4009ef01fe3de7faccf9af4067354ae18e72f2a7faeeda7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41daebb528f6a56b4009ef01fe3de7faccf9af4067354ae18e72f2a7faeeda7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41daebb528f6a56b4009ef01fe3de7faccf9af4067354ae18e72f2a7faeeda7d", kill_on_drop: false }`
[INFO] [stdout] 41daebb528f6a56b4009ef01fe3de7faccf9af4067354ae18e72f2a7faeeda7d
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ac472974536860dac82f38aa9952b0d79d13599814b12d546f1f6146adba0dd
[INFO] running `Command { std: "docker" "start" "-a" "7ac472974536860dac82f38aa9952b0d79d13599814b12d546f1f6146adba0dd", 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/builds/worker-6-tc1/target" to rootfs at "/opt/rustwide/target": create mountpoint for /opt/rustwide/target mount: mkdirat /var/lib/docker/overlay2/b50adfa756b01abd97abbb3668d8edcfe4ee334094cbc3378e63775127ca3073/merged/opt/rustwide/target: no space left on device: unknown
[INFO] running `Command { std: "docker" "inspect" "7ac472974536860dac82f38aa9952b0d79d13599814b12d546f1f6146adba0dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ac472974536860dac82f38aa9952b0d79d13599814b12d546f1f6146adba0dd", kill_on_drop: false }`
[INFO] [stdout] 7ac472974536860dac82f38aa9952b0d79d13599814b12d546f1f6146adba0dd