[INFO] fetching crate sync_cow 0.1.1...
[INFO] checking sync_cow-0.1.1 against master#03eb45452305f2d52348279d0caa5fc1f12c438d for pr-138176
[INFO] extracting crate sync_cow 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate sync_cow 0.1.1 on toolchain 03eb45452305f2d52348279d0caa5fc1f12c438d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+03eb45452305f2d52348279d0caa5fc1f12c438d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sync_cow 0.1.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate sync_cow 0.1.1
[INFO] tweaked toml for crates.io crate sync_cow 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate sync_cow 0.1.1 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" "+03eb45452305f2d52348279d0caa5fc1f12c438d" "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-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+03eb45452305f2d52348279d0caa5fc1f12c438d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48af477745e0a7df7e88834bdd1ee57faa49720c9295ee1f553bd8b5b1c5e05f
[INFO] running `Command { std: "docker" "start" "-a" "48af477745e0a7df7e88834bdd1ee57faa49720c9295ee1f553bd8b5b1c5e05f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48af477745e0a7df7e88834bdd1ee57faa49720c9295ee1f553bd8b5b1c5e05f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48af477745e0a7df7e88834bdd1ee57faa49720c9295ee1f553bd8b5b1c5e05f", kill_on_drop: false }`
[INFO] [stdout] 48af477745e0a7df7e88834bdd1ee57faa49720c9295ee1f553bd8b5b1c5e05f


command failed: exit status: 1

Error response from daemon: mkdir /var/lib/docker/overlay2/0abb972123a6ad5f70d18f7fe25b8c0450bd22cba2475a3e31e0f4b663814f89/merged: no space left on device