[INFO] cloning repository https://github.com/tatsuyafukui/rust-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/tatsuyafukui/rust-card-game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftatsuyafukui%2Frust-card-game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftatsuyafukui%2Frust-card-game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4fdcfd840b2c6a3f36244c7ae89ac1912a967ad1
[INFO] checking tatsuyafukui/rust-card-game against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftatsuyafukui%2Frust-card-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/tatsuyafukui/rust-card-game on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tatsuyafukui/rust-card-game
[INFO] finished tweaking git repo https://github.com/tatsuyafukui/rust-card-game
[INFO] tweaked toml for git repo https://github.com/tatsuyafukui/rust-card-game written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/tatsuyafukui/rust-card-game already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] a95ae85e48e4e00a0812d24717b6e44b766239058599d52463f6ecbd5c417059
[INFO] running `Command { std: "docker" "start" "-a" "a95ae85e48e4e00a0812d24717b6e44b766239058599d52463f6ecbd5c417059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a95ae85e48e4e00a0812d24717b6e44b766239058599d52463f6ecbd5c417059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a95ae85e48e4e00a0812d24717b6e44b766239058599d52463f6ecbd5c417059", kill_on_drop: false }`
[INFO] [stdout] a95ae85e48e4e00a0812d24717b6e44b766239058599d52463f6ecbd5c417059
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fd1640b33aae9b6f46b77f5cfbf031dd33c3d6d2b68a6f5a546bd2ebfc736a5
[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" "8fd1640b33aae9b6f46b77f5cfbf031dd33c3d6d2b68a6f5a546bd2ebfc736a5", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rust-playing-cards v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::rule::*`
[INFO] [stdout]  --> src/player.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::rule::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::rule::*`
[INFO] [stdout]  --> src/player.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::rule::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `Write`
[INFO] [stdout]  --> src/rule.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self, BufRead, Write};
[INFO] [stdout]   |                     ^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Player`
[INFO] [stdout]    --> src/player.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     use super::Player;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::card::*`
[INFO] [stdout]    --> src/player.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |     use crate::card::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::Mark`
[INFO] [stdout]    --> src/player.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     use crate::Mark;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `Write`
[INFO] [stdout]  --> src/rule.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self, BufRead, Write};
[INFO] [stdout]   |                     ^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check_exist_player`
[INFO] [stdout]    --> src/rule.rs:177:8
[INFO] [stdout]     |
[INFO] [stdout] 177 |     fn check_exist_player(&self, player: &Player) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/rule.rs:335:13
[INFO] [stdout]     |
[INFO] [stdout] 335 |         let mut game_master = WithoutBubbling::new(players);
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check_exist_player`
[INFO] [stdout]    --> src/rule.rs:177:8
[INFO] [stdout]     |
[INFO] [stdout] 177 |     fn check_exist_player(&self, player: &Player) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.94s
[INFO] running `Command { std: "docker" "inspect" "8fd1640b33aae9b6f46b77f5cfbf031dd33c3d6d2b68a6f5a546bd2ebfc736a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fd1640b33aae9b6f46b77f5cfbf031dd33c3d6d2b68a6f5a546bd2ebfc736a5", kill_on_drop: false }`
[INFO] [stdout] 8fd1640b33aae9b6f46b77f5cfbf031dd33c3d6d2b68a6f5a546bd2ebfc736a5