[INFO] fetching crate std-next 0.1.5...
[INFO] testing std-next-0.1.5 against master#ebf0cf75d368c035f4c7e7246d203bd469ee4a51 for pr-137940
[INFO] extracting crate std-next 0.1.5 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate std-next 0.1.5 on toolchain ebf0cf75d368c035f4c7e7246d203bd469ee4a51
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate std-next 0.1.5
[INFO] finished tweaking crates.io crate std-next 0.1.5
[INFO] tweaked toml for crates.io crate std-next 0.1.5 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate std-next 0.1.5 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" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 980bd60fda35dfe50f99be7c2bcb139ef7a8434befa18e17614c290339fbfe7f
[INFO] running `Command { std: "docker" "start" "-a" "980bd60fda35dfe50f99be7c2bcb139ef7a8434befa18e17614c290339fbfe7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "980bd60fda35dfe50f99be7c2bcb139ef7a8434befa18e17614c290339fbfe7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "980bd60fda35dfe50f99be7c2bcb139ef7a8434befa18e17614c290339fbfe7f", kill_on_drop: false }`
[INFO] [stdout] 980bd60fda35dfe50f99be7c2bcb139ef7a8434befa18e17614c290339fbfe7f
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60e3c6a042ba63f79cfb452189f76b28049e53437ade603e0b73309b62340045
[INFO] running `Command { std: "docker" "start" "-a" "60e3c6a042ba63f79cfb452189f76b28049e53437ade603e0b73309b62340045", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: mkdir /var/lib/docker/overlay2/b2d4b6b441f60869d55ae4fa7ed521cebe7e0c26b9760edcf6842cd3d4d438a6/merged: no space left on device
[INFO] running `Command { std: "docker" "inspect" "60e3c6a042ba63f79cfb452189f76b28049e53437ade603e0b73309b62340045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60e3c6a042ba63f79cfb452189f76b28049e53437ade603e0b73309b62340045", kill_on_drop: false }`
[INFO] [stdout] 60e3c6a042ba63f79cfb452189f76b28049e53437ade603e0b73309b62340045