[INFO] fetching crate pkg6dev 0.0.1-placeholder...
[INFO] checking pkg6dev-0.0.1-placeholder against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate pkg6dev 0.0.1-placeholder into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate pkg6dev 0.0.1-placeholder on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pkg6dev 0.0.1-placeholder
[INFO] finished tweaking crates.io crate pkg6dev 0.0.1-placeholder
[INFO] tweaked toml for crates.io crate pkg6dev 0.0.1-placeholder written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate pkg6dev 0.0.1-placeholder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93ff45b238467a4b365c1ebbaab21b7838e478565c7232a1a0ceebd6b8f9fed9
[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" "93ff45b238467a4b365c1ebbaab21b7838e478565c7232a1a0ceebd6b8f9fed9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93ff45b238467a4b365c1ebbaab21b7838e478565c7232a1a0ceebd6b8f9fed9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93ff45b238467a4b365c1ebbaab21b7838e478565c7232a1a0ceebd6b8f9fed9", kill_on_drop: false }`
[INFO] [stdout] 93ff45b238467a4b365c1ebbaab21b7838e478565c7232a1a0ceebd6b8f9fed9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 953823f801c5c9604c97ddc1451d46f7f511dc256948674be5c3946a5357b73e
[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" "953823f801c5c9604c97ddc1451d46f7f511dc256948674be5c3946a5357b73e", kill_on_drop: false }`
[INFO] [stderr]     Checking pkg6dev v0.0.1-placeholder (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "953823f801c5c9604c97ddc1451d46f7f511dc256948674be5c3946a5357b73e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "953823f801c5c9604c97ddc1451d46f7f511dc256948674be5c3946a5357b73e", kill_on_drop: false }`
[INFO] [stdout] 953823f801c5c9604c97ddc1451d46f7f511dc256948674be5c3946a5357b73e