[INFO] fetching crate brush 0.0.0...
[INFO] checking brush-0.0.0 against beta for pr-78714
[INFO] extracting crate brush 0.0.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate brush 0.0.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate brush 0.0.0
[INFO] finished tweaking crates.io crate brush 0.0.0
[INFO] tweaked toml for crates.io crate brush 0.0.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 155c81decab59602631b782dc2918a1bd98049b41a8330c47db064019cf77b2b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "155c81decab59602631b782dc2918a1bd98049b41a8330c47db064019cf77b2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "155c81decab59602631b782dc2918a1bd98049b41a8330c47db064019cf77b2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "155c81decab59602631b782dc2918a1bd98049b41a8330c47db064019cf77b2b", kill_on_drop: false }`
[INFO] [stdout] 155c81decab59602631b782dc2918a1bd98049b41a8330c47db064019cf77b2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ab3d3e5046156ffe2870858dc2e1748c959780fc14125824a7ab15772c0dae97
[INFO] running `Command { std: "docker" "start" "-a" "ab3d3e5046156ffe2870858dc2e1748c959780fc14125824a7ab15772c0dae97", kill_on_drop: false }`
[INFO] [stderr]     Checking brush v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "ab3d3e5046156ffe2870858dc2e1748c959780fc14125824a7ab15772c0dae97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab3d3e5046156ffe2870858dc2e1748c959780fc14125824a7ab15772c0dae97", kill_on_drop: false }`
[INFO] [stdout] ab3d3e5046156ffe2870858dc2e1748c959780fc14125824a7ab15772c0dae97