[INFO] cloning repository https://github.com/arpanlaha/minesweeper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arpanlaha/minesweeper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farpanlaha%2Fminesweeper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farpanlaha%2Fminesweeper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bdb41a652239d99be293aee510537640737b1f23
[INFO] testing arpanlaha/minesweeper against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farpanlaha%2Fminesweeper" "/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/arpanlaha/minesweeper on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arpanlaha/minesweeper
[INFO] finished tweaking git repo https://github.com/arpanlaha/minesweeper
[INFO] tweaked toml for git repo https://github.com/arpanlaha/minesweeper written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/arpanlaha/minesweeper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d117d87b3a1d2313f096c8197e8a7129ef5e08b38007159935bd0d4da302a365
[INFO] running `Command { std: "docker" "start" "-a" "d117d87b3a1d2313f096c8197e8a7129ef5e08b38007159935bd0d4da302a365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d117d87b3a1d2313f096c8197e8a7129ef5e08b38007159935bd0d4da302a365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d117d87b3a1d2313f096c8197e8a7129ef5e08b38007159935bd0d4da302a365", kill_on_drop: false }`
[INFO] [stdout] d117d87b3a1d2313f096c8197e8a7129ef5e08b38007159935bd0d4da302a365
[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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73518cf3331b6e67b4b95f282039e3917e53e402bb32fd371f21f667956af813
[INFO] running `Command { std: "docker" "start" "-a" "73518cf3331b6e67b4b95f282039e3917e53e402bb32fd371f21f667956af813", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling minesweeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let board = Board::new(30, 16, 99);
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` 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 4.98s
[INFO] running `Command { std: "docker" "inspect" "73518cf3331b6e67b4b95f282039e3917e53e402bb32fd371f21f667956af813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73518cf3331b6e67b4b95f282039e3917e53e402bb32fd371f21f667956af813", kill_on_drop: false }`
[INFO] [stdout] 73518cf3331b6e67b4b95f282039e3917e53e402bb32fd371f21f667956af813
[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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c84e43d1d0b7e81aa96f53b7e237873bc6fbb548c9cd5fb099eecdedf61f1f3
[INFO] running `Command { std: "docker" "start" "-a" "7c84e43d1d0b7e81aa96f53b7e237873bc6fbb548c9cd5fb099eecdedf61f1f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling minesweeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let board = Board::new(30, 16, 99);
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` 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 0.45s
[INFO] running `Command { std: "docker" "inspect" "7c84e43d1d0b7e81aa96f53b7e237873bc6fbb548c9cd5fb099eecdedf61f1f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c84e43d1d0b7e81aa96f53b7e237873bc6fbb548c9cd5fb099eecdedf61f1f3", kill_on_drop: false }`
[INFO] [stdout] 7c84e43d1d0b7e81aa96f53b7e237873bc6fbb548c9cd5fb099eecdedf61f1f3
[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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6d6f84a065bc92da464263a85eaebb90c24cdf7fb709d10a0bc94b611ec746ea
[INFO] running `Command { std: "docker" "start" "-a" "6d6f84a065bc92da464263a85eaebb90c24cdf7fb709d10a0bc94b611ec746ea", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `board`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 6 |     let board = Board::new(30, 16, 99);
[INFO] [stdout] 
[INFO] [stderr]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] running 0 tests
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/minesweeper-ef1dda286082c179)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/minesweeper-bd263648bdb79527)
[INFO] [stderr]    Doc-tests minesweeper
[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" "6d6f84a065bc92da464263a85eaebb90c24cdf7fb709d10a0bc94b611ec746ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d6f84a065bc92da464263a85eaebb90c24cdf7fb709d10a0bc94b611ec746ea", kill_on_drop: false }`
[INFO] [stdout] 6d6f84a065bc92da464263a85eaebb90c24cdf7fb709d10a0bc94b611ec746ea