[INFO] fetching crate rust-snowflake 0.1.3...
[INFO] checking rust-snowflake-0.1.3 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate rust-snowflake 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rust-snowflake 0.1.3 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-snowflake 0.1.3
[INFO] finished tweaking crates.io crate rust-snowflake 0.1.3
[INFO] tweaked toml for crates.io crate rust-snowflake 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate rust-snowflake 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 073aa8a50baed1b1f13f48ff864718fda7d12cd2c75c62d8f8aad9826de15b23
[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" "073aa8a50baed1b1f13f48ff864718fda7d12cd2c75c62d8f8aad9826de15b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "073aa8a50baed1b1f13f48ff864718fda7d12cd2c75c62d8f8aad9826de15b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "073aa8a50baed1b1f13f48ff864718fda7d12cd2c75c62d8f8aad9826de15b23", kill_on_drop: false }`
[INFO] [stdout] 073aa8a50baed1b1f13f48ff864718fda7d12cd2c75c62d8f8aad9826de15b23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a69b35afb3d72b5a95d3f3b786735a4b1c351275590c855824491726a12ecf76
[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" "a69b35afb3d72b5a95d3f3b786735a4b1c351275590c855824491726a12ecf76", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-snowflake v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "a69b35afb3d72b5a95d3f3b786735a4b1c351275590c855824491726a12ecf76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a69b35afb3d72b5a95d3f3b786735a4b1c351275590c855824491726a12ecf76", kill_on_drop: false }`
[INFO] [stdout] a69b35afb3d72b5a95d3f3b786735a4b1c351275590c855824491726a12ecf76