[INFO] cloning repository https://github.com/JamieSK/battleships
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JamieSK/battleships" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamieSK%2Fbattleships", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamieSK%2Fbattleships'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 989e6c2315ef3dc08bf94e0e5f882545a1364c62
[INFO] testing JamieSK/battleships against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamieSK%2Fbattleships" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JamieSK/battleships on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JamieSK/battleships
[INFO] finished tweaking git repo https://github.com/JamieSK/battleships
[INFO] tweaked toml for git repo https://github.com/JamieSK/battleships written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/JamieSK/battleships already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 67c47c756607dafaa531aa5b9c62d96776387ddc7d05ec656f1e0cc13f21fc2a
[INFO] running `Command { std: "docker" "start" "-a" "67c47c756607dafaa531aa5b9c62d96776387ddc7d05ec656f1e0cc13f21fc2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67c47c756607dafaa531aa5b9c62d96776387ddc7d05ec656f1e0cc13f21fc2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67c47c756607dafaa531aa5b9c62d96776387ddc7d05ec656f1e0cc13f21fc2a", kill_on_drop: false }`
[INFO] [stdout] 67c47c756607dafaa531aa5b9c62d96776387ddc7d05ec656f1e0cc13f21fc2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 932b5037e7b16f76ecae978fd9198682c7cf3acabe2789ac953c43a58ca6fc66
[INFO] running `Command { std: "docker" "start" "-a" "932b5037e7b16f76ecae978fd9198682c7cf3acabe2789ac953c43a58ca6fc66", kill_on_drop: false }`
[INFO] [stderr]    Compiling battleships v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:139:37
[INFO] [stdout]     |
[INFO] [stdout] 139 | ...                   let mut ships_left = self.ships_left(other_player);
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "932b5037e7b16f76ecae978fd9198682c7cf3acabe2789ac953c43a58ca6fc66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "932b5037e7b16f76ecae978fd9198682c7cf3acabe2789ac953c43a58ca6fc66", kill_on_drop: false }`
[INFO] [stdout] 932b5037e7b16f76ecae978fd9198682c7cf3acabe2789ac953c43a58ca6fc66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec8944808ff9a48b4d0fe89bd6bc77d013c780ba8a7fe8abcd8eea3e0683b141
[INFO] running `Command { std: "docker" "start" "-a" "ec8944808ff9a48b4d0fe89bd6bc77d013c780ba8a7fe8abcd8eea3e0683b141", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:139:37
[INFO] [stdout]     |
[INFO] [stdout] 139 | ...                   let mut ships_left = self.ships_left(other_player);
[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] [stderr]    Compiling battleships v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:139:37
[INFO] [stdout]     |
[INFO] [stdout] 139 | ...                   let mut ships_left = self.ships_left(other_player);
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "ec8944808ff9a48b4d0fe89bd6bc77d013c780ba8a7fe8abcd8eea3e0683b141", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec8944808ff9a48b4d0fe89bd6bc77d013c780ba8a7fe8abcd8eea3e0683b141", kill_on_drop: false }`
[INFO] [stdout] ec8944808ff9a48b4d0fe89bd6bc77d013c780ba8a7fe8abcd8eea3e0683b141
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7bbad234830b5624302151db79c36702348fdff075dbe182147aca776dd178dc
[INFO] running `Command { std: "docker" "start" "-a" "7bbad234830b5624302151db79c36702348fdff075dbe182147aca776dd178dc", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:139:37
[INFO] [stderr]     |
[INFO] [stderr] 139 | ...                   let mut ships_left = self.ships_left(other_player);
[INFO] [stderr]     |                           ----^^^^^^^^^^
[INFO] [stderr]     |                           |
[INFO] [stderr]     |                           help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `battleships` (lib) generated 1 warning
[INFO] [stderr] warning: `battleships` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/battleships-70cd58b0e2accb8c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/battleships-f294c643b4e44adb)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/spec.rs (/opt/rustwide/target/debug/deps/spec-1d9f6690c8737113)
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test can_hit_cell_with_ship ... ok
[INFO] [stdout] test can_place_a_submarine_on_the_board ... ok
[INFO] [stdout] test can_hit_empty_cell ... ok
[INFO] [stdout] test can_place_ships_in_any_order ... ok
[INFO] [stdout] test can_play_again_if_you_hit_a_ship ... ok
[INFO] [stdout] test cannot_place_ship_where_another_is ... ok
[INFO] [stdout] test cannot_play_on_same_cell_twice ... ok
[INFO] [stdout] test cannot_play_twice_in_a_row_as_the_same_player ... ok
[INFO] [stdout] test cannot_play_until_all_ships_are_placed ... ok
[INFO] [stdout] test hitting_one_players_ship_does_not_affect_the_others ... ok
[INFO] [stdout] test player_1_starts_with_a_blank_ships_board ... ok
[INFO] [stdout] test can_sink_player_twos_battleships ... ok
[INFO] [stdout] test player_1_starts_with_a_blank_shots_board ... ok
[INFO] [stdout] test return_hit_when_hit_a_ship ... ok
[INFO] [stdout] test return_miss_when_hit_an_empty_cell ... ok
[INFO] [stdout] test return_sank_my_battleship_when_all_of_ship_has_been_hit ... ok
[INFO] [stdout] test returns_true_once_all_ships_are_positioned ... ok
[INFO] [stdout] test ship_on_board_starts_not_hit ... ok
[INFO] [stdout] test starts_with_ships_not_placed ... ok
[INFO] [stdout] test return_sank_all_my_battleships_when_last_one_is_sunk ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests battleships
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7bbad234830b5624302151db79c36702348fdff075dbe182147aca776dd178dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bbad234830b5624302151db79c36702348fdff075dbe182147aca776dd178dc", kill_on_drop: false }`
[INFO] [stdout] 7bbad234830b5624302151db79c36702348fdff075dbe182147aca776dd178dc