[INFO] fetching crate loom 0.3.6...
[INFO] checking loom-0.3.6 against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] extracting crate loom 0.3.6 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate loom 0.3.6 on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate loom 0.3.6
[INFO] finished tweaking crates.io crate loom 0.3.6
[INFO] tweaked toml for crates.io crate loom 0.3.6 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-macro v0.3.8
[INFO] [stderr]   Downloaded pin-project-internal v1.0.2
[INFO] [stderr]   Downloaded generator v0.6.23
[INFO] [stderr]   Downloaded pin-project v1.0.2
[INFO] [stderr]   Downloaded scoped-tls v1.0.0
[INFO] [stderr]   Downloaded futures-core v0.3.8
[INFO] [stderr]   Downloaded futures-util v0.3.8
[INFO] [stderr]   Downloaded futures-task v0.3.8
[INFO] [stderr]   Downloaded proc-macro-nested v0.1.6
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.19
[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" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "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] 1c82254fe1890cb4768e834c670758a597a593a759b955079a326ebc3bc6474d
[INFO] running `Command { std: "docker" "start" "-a" "1c82254fe1890cb4768e834c670758a597a593a759b955079a326ebc3bc6474d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c82254fe1890cb4768e834c670758a597a593a759b955079a326ebc3bc6474d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c82254fe1890cb4768e834c670758a597a593a759b955079a326ebc3bc6474d", kill_on_drop: false }`
[INFO] [stdout] 1c82254fe1890cb4768e834c670758a597a593a759b955079a326ebc3bc6474d
[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" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f796d6ac6f9f6f8993fc3e52abbd8f16e988ffe4760d5ac959123bf885dc4f1
[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" "6f796d6ac6f9f6f8993fc3e52abbd8f16e988ffe4760d5ac959123bf885dc4f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling generator v0.6.23
[INFO] [stderr]     Checking loom v0.3.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.91s
[INFO] running `Command { std: "docker" "inspect" "6f796d6ac6f9f6f8993fc3e52abbd8f16e988ffe4760d5ac959123bf885dc4f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f796d6ac6f9f6f8993fc3e52abbd8f16e988ffe4760d5ac959123bf885dc4f1", kill_on_drop: false }`
[INFO] [stdout] 6f796d6ac6f9f6f8993fc3e52abbd8f16e988ffe4760d5ac959123bf885dc4f1