[INFO] fetching crate zenith-opt 0.0.1...
[INFO] checking zenith-opt-0.0.1 against beta for pr-78714
[INFO] extracting crate zenith-opt 0.0.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate zenith-opt 0.0.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zenith-opt 0.0.1
[INFO] finished tweaking crates.io crate zenith-opt 0.0.1
[INFO] tweaked toml for crates.io crate zenith-opt 0.0.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f7c10808f14438b112b9f5a24c34d40c3acb70564f3f8a555d6edd324619e560
[INFO] running `Command { std: "docker" "start" "-a" "f7c10808f14438b112b9f5a24c34d40c3acb70564f3f8a555d6edd324619e560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7c10808f14438b112b9f5a24c34d40c3acb70564f3f8a555d6edd324619e560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7c10808f14438b112b9f5a24c34d40c3acb70564f3f8a555d6edd324619e560", kill_on_drop: false }`
[INFO] [stdout] f7c10808f14438b112b9f5a24c34d40c3acb70564f3f8a555d6edd324619e560
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 638cbfba4e36806bc1671395ea83133c49d73a2f4d359dcaf02044b7c18057cf
[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" "638cbfba4e36806bc1671395ea83133c49d73a2f4d359dcaf02044b7c18057cf", kill_on_drop: false }`
[INFO] [stderr]     Checking zenith-opt v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `hill_climbing_search`
[INFO] [stdout]   --> src/individual.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn hill_climbing_search<T: LocalOptimizationProblem<Score = impl Ord>>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "638cbfba4e36806bc1671395ea83133c49d73a2f4d359dcaf02044b7c18057cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "638cbfba4e36806bc1671395ea83133c49d73a2f4d359dcaf02044b7c18057cf", kill_on_drop: false }`
[INFO] [stdout] 638cbfba4e36806bc1671395ea83133c49d73a2f4d359dcaf02044b7c18057cf