[INFO] cloning repository https://github.com/Typhion/rusty_minesweeper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Typhion/rusty_minesweeper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTyphion%2Frusty_minesweeper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTyphion%2Frusty_minesweeper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb911e26c8dec918e57ee8799374f947bfb8a174
[INFO] testing Typhion/rusty_minesweeper/eb911e26c8dec918e57ee8799374f947bfb8a174 against 1.81.0 for beta-1.82-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTyphion%2Frusty_minesweeper" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Typhion/rusty_minesweeper on toolchain 1.81.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.81.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Typhion/rusty_minesweeper
[INFO] finished tweaking git repo https://github.com/Typhion/rusty_minesweeper
[INFO] tweaked toml for git repo https://github.com/Typhion/rusty_minesweeper written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Typhion/rusty_minesweeper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.81.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+1.81.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b291b396da83942c4afac31f3fad60e14112946dbabd530bcbce30a03a1e8f0
[INFO] running `Command { std: "docker" "start" "-a" "1b291b396da83942c4afac31f3fad60e14112946dbabd530bcbce30a03a1e8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b291b396da83942c4afac31f3fad60e14112946dbabd530bcbce30a03a1e8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b291b396da83942c4afac31f3fad60e14112946dbabd530bcbce30a03a1e8f0", kill_on_drop: false }`
[INFO] [stdout] 1b291b396da83942c4afac31f3fad60e14112946dbabd530bcbce30a03a1e8f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+1.81.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f56df6df9e6329e6e80e5786901ce7d590c7cdd591bfa6b9ba5d27712574fdc3
[INFO] running `Command { std: "docker" "start" "-a" "f56df6df9e6329e6e80e5786901ce7d590c7cdd591bfa6b9ba5d27712574fdc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling minesweeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `uncovered` is never read
[INFO] [stdout]   --> src/field.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub struct Tile {
[INFO] [stdout]    |                ---- field in this struct
[INFO] [stdout] 19 |         pub uncovered: bool,
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_uncovered` is never used
[INFO] [stdout]   --> src/field.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 24 |     impl Tile {
[INFO] [stdout]    |     --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |         pub fn set_uncovered(mut self) -> Self {
[INFO] [stdout]    |                ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.91s
[INFO] running `Command { std: "docker" "inspect" "f56df6df9e6329e6e80e5786901ce7d590c7cdd591bfa6b9ba5d27712574fdc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f56df6df9e6329e6e80e5786901ce7d590c7cdd591bfa6b9ba5d27712574fdc3", kill_on_drop: false }`
[INFO] [stdout] f56df6df9e6329e6e80e5786901ce7d590c7cdd591bfa6b9ba5d27712574fdc3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+1.81.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5e0b2cffbd098f1172ecd25297f8caa613b32cabb94e102a3bf712c1a3dc556
[INFO] running `Command { std: "docker" "start" "-a" "c5e0b2cffbd098f1172ecd25297f8caa613b32cabb94e102a3bf712c1a3dc556", kill_on_drop: false }`
[INFO] [stderr]    Compiling minesweeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `uncovered` is never read
[INFO] [stdout]   --> src/field.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub struct Tile {
[INFO] [stdout]    |                ---- field in this struct
[INFO] [stdout] 19 |         pub uncovered: bool,
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_uncovered` is never used
[INFO] [stdout]   --> src/field.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 24 |     impl Tile {
[INFO] [stdout]    |     --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |         pub fn set_uncovered(mut self) -> Self {
[INFO] [stdout]    |                ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "c5e0b2cffbd098f1172ecd25297f8caa613b32cabb94e102a3bf712c1a3dc556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5e0b2cffbd098f1172ecd25297f8caa613b32cabb94e102a3bf712c1a3dc556", kill_on_drop: false }`
[INFO] [stdout] c5e0b2cffbd098f1172ecd25297f8caa613b32cabb94e102a3bf712c1a3dc556
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+1.81.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 33feb36dbb13667283cb85f17e8a6d839db744eb405a16ef949306d950dfcab3
[INFO] running `Command { std: "docker" "start" "-a" "33feb36dbb13667283cb85f17e8a6d839db744eb405a16ef949306d950dfcab3", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `uncovered` is never read
[INFO] [stderr]   --> src/field.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub struct Tile {
[INFO] [stderr]    |                ---- field in this struct
[INFO] [stderr] 19 |         pub uncovered: bool,
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `set_uncovered` is never used
[INFO] [stderr]   --> src/field.rs:29:16
[INFO] [stderr]    |
[INFO] [stderr] 24 |     impl Tile {
[INFO] [stderr]    |     --------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 29 |         pub fn set_uncovered(mut self) -> Self {
[INFO] [stderr]    |                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `minesweeper` (bin "minesweeper" test) generated 3 warnings (run `cargo fix --bin "minesweeper" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/minesweeper-bae78899748ea90b)
[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" "33feb36dbb13667283cb85f17e8a6d839db744eb405a16ef949306d950dfcab3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33feb36dbb13667283cb85f17e8a6d839db744eb405a16ef949306d950dfcab3", kill_on_drop: false }`
[INFO] [stdout] 33feb36dbb13667283cb85f17e8a6d839db744eb405a16ef949306d950dfcab3