[INFO] cloning repository https://github.com/mnussbaum/card-game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mnussbaum/card-game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmnussbaum%2Fcard-game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmnussbaum%2Fcard-game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ffd6dd6c6fa23ba1c72d6ab9d5a8803a711d4cf1
[INFO] checking mnussbaum/card-game against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmnussbaum%2Fcard-game" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mnussbaum/card-game 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 git repo https://github.com/mnussbaum/card-game
[INFO] finished tweaking git repo https://github.com/mnussbaum/card-game
[INFO] tweaked toml for git repo https://github.com/mnussbaum/card-game written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mnussbaum/card-game already has a lockfile, it will not be regenerated
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efbbd6cddf73cb000ed4b4b8f495fd80e201babc7e8c3a3bc6cb51dca2b7b4e5
[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" "efbbd6cddf73cb000ed4b4b8f495fd80e201babc7e8c3a3bc6cb51dca2b7b4e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efbbd6cddf73cb000ed4b4b8f495fd80e201babc7e8c3a3bc6cb51dca2b7b4e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efbbd6cddf73cb000ed4b4b8f495fd80e201babc7e8c3a3bc6cb51dca2b7b4e5", kill_on_drop: false }`
[INFO] [stdout] efbbd6cddf73cb000ed4b4b8f495fd80e201babc7e8c3a3bc6cb51dca2b7b4e5
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 2fe27d00c895282d1eab711618b5a6aa4335b3aa036c719d7c5280b200e34104
[INFO] running `Command { std: "docker" "start" "-a" "2fe27d00c895282d1eab711618b5a6aa4335b3aa036c719d7c5280b200e34104", kill_on_drop: false }`
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking card-game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Card`
[INFO] [stdout]  --> src/game_state.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::card_deck::{Card, CardGroup, Deck};
[INFO] [stdout]   |                        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Card`
[INFO] [stdout]  --> src/game_state.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::card_deck::{Card, CardGroup, Deck};
[INFO] [stdout]   |                        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hmm`
[INFO] [stdout]    --> src/game_state.rs:171:17
[INFO] [stdout]     |
[INFO] [stdout] 171 |             let hmm: usize = read!();
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_hmm`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hmm`
[INFO] [stdout]    --> src/game_state.rs:171:17
[INFO] [stdout]     |
[INFO] [stdout] 171 |             let hmm: usize = read!();
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_hmm`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     game_state.play_game();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     game_state.play_game();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.55s
[INFO] running `Command { std: "docker" "inspect" "2fe27d00c895282d1eab711618b5a6aa4335b3aa036c719d7c5280b200e34104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fe27d00c895282d1eab711618b5a6aa4335b3aa036c719d7c5280b200e34104", kill_on_drop: false }`
[INFO] [stdout] 2fe27d00c895282d1eab711618b5a6aa4335b3aa036c719d7c5280b200e34104