[INFO] fetching crate sirena 0.0.1...
[INFO] checking sirena-0.0.1 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate sirena 0.0.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate sirena 0.0.1 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sirena 0.0.1
[INFO] finished tweaking crates.io crate sirena 0.0.1
[INFO] tweaked toml for crates.io crate sirena 0.0.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate sirena 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 517f7ac11dffc2084742195bd4a34fdef82fb13aba8d1c78b2610c95e4ca4930
[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" "517f7ac11dffc2084742195bd4a34fdef82fb13aba8d1c78b2610c95e4ca4930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "517f7ac11dffc2084742195bd4a34fdef82fb13aba8d1c78b2610c95e4ca4930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "517f7ac11dffc2084742195bd4a34fdef82fb13aba8d1c78b2610c95e4ca4930", kill_on_drop: false }`
[INFO] [stdout] 517f7ac11dffc2084742195bd4a34fdef82fb13aba8d1c78b2610c95e4ca4930
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1e080b18dee43cd521f8b244f06f304848c65a93080531ee4c79224b0873715
[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" "e1e080b18dee43cd521f8b244f06f304848c65a93080531ee4c79224b0873715", kill_on_drop: false }`
[INFO] [stderr]     Checking sirena v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "e1e080b18dee43cd521f8b244f06f304848c65a93080531ee4c79224b0873715", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1e080b18dee43cd521f8b244f06f304848c65a93080531ee4c79224b0873715", kill_on_drop: false }`
[INFO] [stdout] e1e080b18dee43cd521f8b244f06f304848c65a93080531ee4c79224b0873715