[INFO] fetching crate mcts 0.3.0...
[INFO] checking mcts-0.3.0 against beta for pr-78714
[INFO] extracting crate mcts 0.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate mcts 0.3.0 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 mcts 0.3.0
[INFO] finished tweaking crates.io crate mcts 0.3.0
[INFO] tweaked toml for crates.io crate mcts 0.3.0 written to /workspace/builds/worker-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 6fbe924ac14444ad0046b5aba4a57107a60db39e2fbb7eed3af763d21ba640d8
[INFO] running `Command { std: "docker" "start" "-a" "6fbe924ac14444ad0046b5aba4a57107a60db39e2fbb7eed3af763d21ba640d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fbe924ac14444ad0046b5aba4a57107a60db39e2fbb7eed3af763d21ba640d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fbe924ac14444ad0046b5aba4a57107a60db39e2fbb7eed3af763d21ba640d8", kill_on_drop: false }`
[INFO] [stdout] 6fbe924ac14444ad0046b5aba4a57107a60db39e2fbb7eed3af763d21ba640d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] b5d08cae8a157ee73932eb7946823b83b12192279fc2f584184180b7b8b46683
[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" "b5d08cae8a157ee73932eb7946823b83b12192279fc2f584184180b7b8b46683", kill_on_drop: false }`
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking mcts v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/bench.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 5 arguments but 4 arguments were supplied
[INFO] [stdout]   --> benches/bench.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut mcts = MCTSManager::new(CountingGame(0), MyMCTS, UCTPolicy::new(1e6), MyEvaluator);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^ ---------------  ------  -------------------  ----------- supplied 4 arguments
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        expected 5 arguments
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mcts`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b5d08cae8a157ee73932eb7946823b83b12192279fc2f584184180b7b8b46683", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5d08cae8a157ee73932eb7946823b83b12192279fc2f584184180b7b8b46683", kill_on_drop: false }`
[INFO] [stdout] b5d08cae8a157ee73932eb7946823b83b12192279fc2f584184180b7b8b46683