[INFO] fetching crate contracts 0.6.0...
[INFO] checking contracts-0.6.0 against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] extracting crate contracts 0.6.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate contracts 0.6.0 on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate contracts 0.6.0
[INFO] finished tweaking crates.io crate contracts 0.6.0
[INFO] tweaked toml for crates.io crate contracts 0.6.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate contracts 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] acb411db029cd57ab5964ee03fcc72c8cb8e998dcf5369e648e34738c80bda99
[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" "acb411db029cd57ab5964ee03fcc72c8cb8e998dcf5369e648e34738c80bda99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acb411db029cd57ab5964ee03fcc72c8cb8e998dcf5369e648e34738c80bda99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acb411db029cd57ab5964ee03fcc72c8cb8e998dcf5369e648e34738c80bda99", kill_on_drop: false }`
[INFO] [stdout] acb411db029cd57ab5964ee03fcc72c8cb8e998dcf5369e648e34738c80bda99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68f78d32861725d6f41772e5f5e7f1e5714c3ad145b5b49af52bb95ab366e844
[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" "68f78d32861725d6f41772e5f5e7f1e5714c3ad145b5b49af52bb95ab366e844", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking contracts v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.37s
[INFO] running `Command { std: "docker" "inspect" "68f78d32861725d6f41772e5f5e7f1e5714c3ad145b5b49af52bb95ab366e844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68f78d32861725d6f41772e5f5e7f1e5714c3ad145b5b49af52bb95ab366e844", kill_on_drop: false }`
[INFO] [stdout] 68f78d32861725d6f41772e5f5e7f1e5714c3ad145b5b49af52bb95ab366e844