[INFO] updating cached repository https://github.com/JamieSK/battleships
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 989e6c2315ef3dc08bf94e0e5f882545a1364c62
[INFO] testing JamieSK/battleships against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJamieSK%2Fbattleships" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JamieSK/battleships on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-9/source/Cargo.toml
[INFO] crate git repo https://github.com/JamieSK/battleships already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0f1afebf8291da70eecb773be119d02d954a5c936841c0d23f5d328c882744be
[INFO] running `"docker" "start" "-a" "0f1afebf8291da70eecb773be119d02d954a5c936841c0d23f5d328c882744be"`
[INFO] [stderr]    Compiling battleships v0.1.0 (/opt/rustwide/workdir)
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `"docker" "inspect" "0f1afebf8291da70eecb773be119d02d954a5c936841c0d23f5d328c882744be"`
[INFO] running `"docker" "rm" "-f" "0f1afebf8291da70eecb773be119d02d954a5c936841c0d23f5d328c882744be"`
[INFO] [stdout] 0f1afebf8291da70eecb773be119d02d954a5c936841c0d23f5d328c882744be
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dcd86f901c3fee432e403a96f3f4ace7f9871c10301753d6c2d88d116280f41f
[INFO] running `"docker" "start" "-a" "dcd86f901c3fee432e403a96f3f4ace7f9871c10301753d6c2d88d116280f41f"`
[INFO] [stderr]    Compiling battleships v0.1.0 (/opt/rustwide/workdir)
[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: 1 warning emitted
[INFO] [stderr] 
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `"docker" "inspect" "dcd86f901c3fee432e403a96f3f4ace7f9871c10301753d6c2d88d116280f41f"`
[INFO] running `"docker" "rm" "-f" "dcd86f901c3fee432e403a96f3f4ace7f9871c10301753d6c2d88d116280f41f"`
[INFO] [stdout] dcd86f901c3fee432e403a96f3f4ace7f9871c10301753d6c2d88d116280f41f
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f03cc9fc131cb49d40a607f57163d078c6b418bce5b203dac89313e5eb4ad6a4
[INFO] running `"docker" "start" "-a" "f03cc9fc131cb49d40a607f57163d078c6b418bce5b203dac89313e5eb4ad6a4"`
[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: 1 warning emitted
[INFO] [stderr] 
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/battleships-85876f8118de4957
[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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/battleships-e15224db4bf8bf65
[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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/spec-c7494bf032c15a22
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test can_place_a_submarine_on_the_board ... ok
[INFO] [stdout] test can_place_ships_in_any_order ... ok
[INFO] [stdout] test cannot_place_ship_where_another_is ... ok
[INFO] [stdout] test can_play_again_if_you_hit_a_ship ... ok
[INFO] [stdout] test can_sink_player_twos_battleships ... ok
[INFO] [stdout] test can_hit_empty_cell ... ok
[INFO] [stdout] test can_hit_cell_with_ship ... 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 returns_true_once_all_ships_are_positioned ... ok
[INFO] [stdout] test return_hit_when_hit_a_ship ... ok
[INFO] [stdout] test return_sank_my_battleship_when_all_of_ship_has_been_hit ... ok
[INFO] [stdout] test player_1_starts_with_a_blank_shots_board ... ok
[INFO] [stdout] test ship_on_board_starts_not_hit ... ok
[INFO] [stdout] test return_miss_when_hit_an_empty_cell ... ok
[INFO] [stdout] test player_1_starts_with_a_blank_ships_board ... ok
[INFO] [stdout] test cannot_play_on_same_cell_twice ... ok
[INFO] [stdout] test return_sank_all_my_battleships_when_last_one_is_sunk ... ok
[INFO] [stdout] test starts_with_ships_not_placed ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f03cc9fc131cb49d40a607f57163d078c6b418bce5b203dac89313e5eb4ad6a4"`
[INFO] running `"docker" "rm" "-f" "f03cc9fc131cb49d40a607f57163d078c6b418bce5b203dac89313e5eb4ad6a4"`
[INFO] [stdout] f03cc9fc131cb49d40a607f57163d078c6b418bce5b203dac89313e5eb4ad6a4