[INFO] fetching crate rcu 0.0.1...
[INFO] checking rcu-0.0.1 against master#ffa2e7ae8fbf9badc035740db949b9dae271c29f for pr-78338
[INFO] extracting crate rcu 0.0.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rcu 0.0.1 on toolchain ffa2e7ae8fbf9badc035740db949b9dae271c29f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa2e7ae8fbf9badc035740db949b9dae271c29f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rcu 0.0.1
[INFO] finished tweaking crates.io crate rcu 0.0.1
[INFO] tweaked toml for crates.io crate rcu 0.0.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa2e7ae8fbf9badc035740db949b9dae271c29f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa2e7ae8fbf9badc035740db949b9dae271c29f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa2e7ae8fbf9badc035740db949b9dae271c29f" "metadata" "--no-deps" "--format-version=1", 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] 3f6b34e880f9ccfd219513c8d1c16c2cb75af0bcd254289e1a2fd25fbc740a30
[INFO] running `Command { std: "docker" "start" "-a" "3f6b34e880f9ccfd219513c8d1c16c2cb75af0bcd254289e1a2fd25fbc740a30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f6b34e880f9ccfd219513c8d1c16c2cb75af0bcd254289e1a2fd25fbc740a30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f6b34e880f9ccfd219513c8d1c16c2cb75af0bcd254289e1a2fd25fbc740a30", kill_on_drop: false }`
[INFO] [stdout] 3f6b34e880f9ccfd219513c8d1c16c2cb75af0bcd254289e1a2fd25fbc740a30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa2e7ae8fbf9badc035740db949b9dae271c29f" "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] 4c8c4ec37fac0fba34ac2f7d87c188e60b233ed12e0b166f41f0d60920b3faad
[INFO] running `Command { std: "docker" "start" "-a" "4c8c4ec37fac0fba34ac2f7d87c188e60b233ed12e0b166f41f0d60920b3faad", 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] [stderr]     Checking rcu v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "4c8c4ec37fac0fba34ac2f7d87c188e60b233ed12e0b166f41f0d60920b3faad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c8c4ec37fac0fba34ac2f7d87c188e60b233ed12e0b166f41f0d60920b3faad", kill_on_drop: false }`
[INFO] [stdout] 4c8c4ec37fac0fba34ac2f7d87c188e60b233ed12e0b166f41f0d60920b3faad