[INFO] cloning repository https://github.com/ddefrenne/battleship
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ddefrenne/battleship" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fddefrenne%2Fbattleship", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fddefrenne%2Fbattleship'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a80a793b47a6039c462dba8e442ae1ea489828d8
[INFO] testing ddefrenne/battleship against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fddefrenne%2Fbattleship" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ddefrenne/battleship on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ddefrenne/battleship
[INFO] finished tweaking git repo https://github.com/ddefrenne/battleship
[INFO] tweaked toml for git repo https://github.com/ddefrenne/battleship written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/ddefrenne/battleship already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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] d5f1f87d5e1e45ed21084020cfd78b832b81849155f1d97c7a55932493acbefb
[INFO] running `Command { std: "docker" "start" "-a" "d5f1f87d5e1e45ed21084020cfd78b832b81849155f1d97c7a55932493acbefb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5f1f87d5e1e45ed21084020cfd78b832b81849155f1d97c7a55932493acbefb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5f1f87d5e1e45ed21084020cfd78b832b81849155f1d97c7a55932493acbefb", kill_on_drop: false }`
[INFO] [stdout] d5f1f87d5e1e45ed21084020cfd78b832b81849155f1d97c7a55932493acbefb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcd983d4f54373e128411dfe623839672b0510e150bfcdf4c6a26722368ec103
[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" "fcd983d4f54373e128411dfe623839672b0510e150bfcdf4c6a26722368ec103", kill_on_drop: false }`
[INFO] [stderr]    Compiling battleship v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/main.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for column in (1..amount_of_columns + 1) {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grid`
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let grid = build_grid(&rows, amount_of_columns);
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_grid`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rows`
[INFO] [stdout]  --> src/main.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn build_grid(rows: &[char; 10], amount_of_columns: i32) {
[INFO] [stdout]   |               ^^^^ help: if this is intentional, prefix it with an underscore: `_rows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "fcd983d4f54373e128411dfe623839672b0510e150bfcdf4c6a26722368ec103", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcd983d4f54373e128411dfe623839672b0510e150bfcdf4c6a26722368ec103", kill_on_drop: false }`
[INFO] [stdout] fcd983d4f54373e128411dfe623839672b0510e150bfcdf4c6a26722368ec103
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 429a624f6b8048e18521d1042bf531ee72e6d003a994e1a6eea06ab639cf9745
[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" "429a624f6b8048e18521d1042bf531ee72e6d003a994e1a6eea06ab639cf9745", kill_on_drop: false }`
[INFO] [stderr]    Compiling battleship v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/main.rs:19:19
[INFO] [stdout]    |
[INFO] [stdout] 19 |     for column in (1..amount_of_columns + 1) {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grid`
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let grid = build_grid(&rows, amount_of_columns);
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_grid`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rows`
[INFO] [stdout]  --> src/main.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn build_grid(rows: &[char; 10], amount_of_columns: i32) {
[INFO] [stdout]   |               ^^^^ help: if this is intentional, prefix it with an underscore: `_rows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.64s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "429a624f6b8048e18521d1042bf531ee72e6d003a994e1a6eea06ab639cf9745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "429a624f6b8048e18521d1042bf531ee72e6d003a994e1a6eea06ab639cf9745", kill_on_drop: false }`
[INFO] [stdout] 429a624f6b8048e18521d1042bf531ee72e6d003a994e1a6eea06ab639cf9745
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8b4e80a65eb472dfd0e0b5be6ef63d9006d26f763f1d70e2dcd12a0a01bdfa8d
[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" "8b4e80a65eb472dfd0e0b5be6ef63d9006d26f763f1d70e2dcd12a0a01bdfa8d", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/main.rs:19:19
[INFO] [stderr]    |
[INFO] [stderr] 19 |     for column in (1..amount_of_columns + 1) {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `grid`
[INFO] [stderr]  --> src/main.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let grid = build_grid(&rows, amount_of_columns);
[INFO] [stderr]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_grid`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rows`
[INFO] [stderr]  --> src/main.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn build_grid(rows: &[char; 10], amount_of_columns: i32) {
[INFO] [stderr]   |               ^^^^ help: if this is intentional, prefix it with an underscore: `_rows`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/battleship-26f0727a95e274bb)
[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" "8b4e80a65eb472dfd0e0b5be6ef63d9006d26f763f1d70e2dcd12a0a01bdfa8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b4e80a65eb472dfd0e0b5be6ef63d9006d26f763f1d70e2dcd12a0a01bdfa8d", kill_on_drop: false }`
[INFO] [stdout] 8b4e80a65eb472dfd0e0b5be6ef63d9006d26f763f1d70e2dcd12a0a01bdfa8d