[INFO] fetching crate polar-c-api 0.1.0...
[INFO] checking polar-c-api-0.1.0 against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] extracting crate polar-c-api 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate polar-c-api 0.1.0 on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polar-c-api 0.1.0
[INFO] finished tweaking crates.io crate polar-c-api 0.1.0
[INFO] tweaked toml for crates.io crate polar-c-api 0.1.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate polar-c-api 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6bd4750169c4c59c0815b56e2a593ec78262520c7143b20af184d5828a2f21c
[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" "e6bd4750169c4c59c0815b56e2a593ec78262520c7143b20af184d5828a2f21c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6bd4750169c4c59c0815b56e2a593ec78262520c7143b20af184d5828a2f21c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6bd4750169c4c59c0815b56e2a593ec78262520c7143b20af184d5828a2f21c", kill_on_drop: false }`
[INFO] [stdout] e6bd4750169c4c59c0815b56e2a593ec78262520c7143b20af184d5828a2f21c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17e05a0492bc165f30a9796655f85ace3dab8f34e8a24a32d3db3ba0930fdf4b
[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" "17e05a0492bc165f30a9796655f85ace3dab8f34e8a24a32d3db3ba0930fdf4b", kill_on_drop: false }`
[INFO] [stderr]     Checking polar-c-api v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "17e05a0492bc165f30a9796655f85ace3dab8f34e8a24a32d3db3ba0930fdf4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17e05a0492bc165f30a9796655f85ace3dab8f34e8a24a32d3db3ba0930fdf4b", kill_on_drop: false }`
[INFO] [stdout] 17e05a0492bc165f30a9796655f85ace3dab8f34e8a24a32d3db3ba0930fdf4b