[INFO] fetching crate macstats 0.1.3...
[INFO] testing macstats-0.1.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate macstats 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate macstats 0.1.3 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate macstats 0.1.3
[INFO] finished tweaking crates.io crate macstats 0.1.3
[INFO] tweaked toml for crates.io crate macstats 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate macstats 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31e11cd9363e47b883bb287141bf2c4c2a454600c39351cc5726d097ada518f2
[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" "31e11cd9363e47b883bb287141bf2c4c2a454600c39351cc5726d097ada518f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31e11cd9363e47b883bb287141bf2c4c2a454600c39351cc5726d097ada518f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31e11cd9363e47b883bb287141bf2c4c2a454600c39351cc5726d097ada518f2", kill_on_drop: false }`
[INFO] [stdout] 31e11cd9363e47b883bb287141bf2c4c2a454600c39351cc5726d097ada518f2
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cf9fa1a4e4f78e133a067c7e85050c2750ae8b023493c27eb3ca0cf0b8b7082
[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" "1cf9fa1a4e4f78e133a067c7e85050c2750ae8b023493c27eb3ca0cf0b8b7082", kill_on_drop: false }`
[INFO] [stderr]    Compiling macsmc v0.1.6
[INFO] [stdout] error: This crate only works on macOS
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/macsmc-0.1.6/src/lib.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | compile_error!("This crate only works on macOS");
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `macsmc` due to 2 previous errors
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1cf9fa1a4e4f78e133a067c7e85050c2750ae8b023493c27eb3ca0cf0b8b7082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cf9fa1a4e4f78e133a067c7e85050c2750ae8b023493c27eb3ca0cf0b8b7082", kill_on_drop: false }`
[INFO] [stdout] 1cf9fa1a4e4f78e133a067c7e85050c2750ae8b023493c27eb3ca0cf0b8b7082