[INFO] cloning repository https://github.com/strohs/rust-minesweeper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/strohs/rust-minesweeper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrohs%2Frust-minesweeper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrohs%2Frust-minesweeper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82ffbbd887cd843174b2a7b29f5828839eeed39c
[INFO] testing strohs/rust-minesweeper against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrohs%2Frust-minesweeper" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/strohs/rust-minesweeper on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/strohs/rust-minesweeper
[INFO] finished tweaking git repo https://github.com/strohs/rust-minesweeper
[INFO] tweaked toml for git repo https://github.com/strohs/rust-minesweeper written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/strohs/rust-minesweeper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "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] 07340e1b192242f06f5035c73654d1b7b8f56340078fec3d0b598d10e9305fa7
[INFO] running `Command { std: "docker" "start" "-a" "07340e1b192242f06f5035c73654d1b7b8f56340078fec3d0b598d10e9305fa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07340e1b192242f06f5035c73654d1b7b8f56340078fec3d0b598d10e9305fa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07340e1b192242f06f5035c73654d1b7b8f56340078fec3d0b598d10e9305fa7", kill_on_drop: false }`
[INFO] [stdout] 07340e1b192242f06f5035c73654d1b7b8f56340078fec3d0b598d10e9305fa7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e844f6b3c460b3d09923b8e8049886bcee52947572e5fd9a895ead1830b35cac
[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" "e844f6b3c460b3d09923b8e8049886bcee52947572e5fd9a895ead1830b35cac", kill_on_drop: false }`
[INFO] [stderr]    Compiling spin v0.5.0
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling getrandom v0.1.6
[INFO] [stderr]    Compiling rand_chacha v0.2.0
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling rust-minesweeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `elapsed_time`
[INFO] [stdout]   --> src/minesweeper.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     elapsed_time: u64,
[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 5.23s
[INFO] running `Command { std: "docker" "inspect" "e844f6b3c460b3d09923b8e8049886bcee52947572e5fd9a895ead1830b35cac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e844f6b3c460b3d09923b8e8049886bcee52947572e5fd9a895ead1830b35cac", kill_on_drop: false }`
[INFO] [stdout] e844f6b3c460b3d09923b8e8049886bcee52947572e5fd9a895ead1830b35cac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 590b91fe4432f45ec8427f21bc17826bcd8690a0de482ffc19d0525d91047d85
[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" "590b91fe4432f45ec8427f21bc17826bcd8690a0de482ffc19d0525d91047d85", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-minesweeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::game_cell::CellKind::Empty`
[INFO] [stdout]    --> src/game_cell.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |     use crate::game_cell::CellKind::Empty;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `elapsed_time`
[INFO] [stdout]   --> src/minesweeper.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     elapsed_time: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "590b91fe4432f45ec8427f21bc17826bcd8690a0de482ffc19d0525d91047d85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "590b91fe4432f45ec8427f21bc17826bcd8690a0de482ffc19d0525d91047d85", kill_on_drop: false }`
[INFO] [stdout] 590b91fe4432f45ec8427f21bc17826bcd8690a0de482ffc19d0525d91047d85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7d6503e7ce033f83e63d6dc3f7ad1899a5eeb4bbc638c256dbc98234197afd7d
[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" "7d6503e7ce033f83e63d6dc3f7ad1899a5eeb4bbc638c256dbc98234197afd7d", 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] [stderr] warning: unused import: `crate::game_cell::CellKind::Empty`
[INFO] [stderr]    --> src/game_cell.rs:158:9
[INFO] [stderr]     |
[INFO] [stderr] 158 |     use crate::game_cell::CellKind::Empty;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `elapsed_time`
[INFO] [stderr]   --> src/minesweeper.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     elapsed_time: u64,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_minesweeper-5260cd9348573732)
[INFO] [stdout] running 9 tests
[INFO] [stdout] test game_cell::tests::flagged_cell_displays_the_flag_char ... ok
[INFO] [stdout] test game_cell::tests::lone_cell_test_should_return_false_for_any_mined_cell ... ok
[INFO] [stdout] test game_cell::tests::revealed_empty_cell_with_no_adjacent_mines_should_display_revealed_char ... ok
[INFO] [stdout] test game_cell::tests::revealed_mined_cell_should_display_as_mine_char ... ok
[INFO] [stdout] test game_cell::tests::questioned_cell_displays_the_question_char ... ok
[INFO] [stdout] test game_cell::tests::revealed_empty_cell_with_adjacent_mines_should_display_adj_mine_count ... ok
[INFO] [stdout] test game_cell::tests::lone_cell_test_should_return_true_for_empty_cell_with_0_adj_mines ... ok
[INFO] [stdout] test game_cell::tests::hidden_cell_should_display_as_hidden_char ... ok
[INFO] [stdout] test game_cell::tests::lone_cell_test_should_return_false_for_empty_cell_with_gt_0_adj_mines ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7d6503e7ce033f83e63d6dc3f7ad1899a5eeb4bbc638c256dbc98234197afd7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d6503e7ce033f83e63d6dc3f7ad1899a5eeb4bbc638c256dbc98234197afd7d", kill_on_drop: false }`
[INFO] [stdout] 7d6503e7ce033f83e63d6dc3f7ad1899a5eeb4bbc638c256dbc98234197afd7d