[INFO] cloning repository https://github.com/aarish98/rust_minesweeper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aarish98/rust_minesweeper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faarish98%2Frust_minesweeper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faarish98%2Frust_minesweeper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5cd34bcef4b27a672175825015cab6f0a8251313
[INFO] testing aarish98/rust_minesweeper against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faarish98%2Frust_minesweeper" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/aarish98/rust_minesweeper
[INFO] finished tweaking git repo https://github.com/aarish98/rust_minesweeper
[INFO] tweaked toml for git repo https://github.com/aarish98/rust_minesweeper written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aarish98/rust_minesweeper on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/aarish98/rust_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" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] testing aarish98/rust_minesweeper against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faarish98%2Frust_minesweeper" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/aarish98/rust_minesweeper
[INFO] finished tweaking git repo https://github.com/aarish98/rust_minesweeper
[INFO] tweaked toml for git repo https://github.com/aarish98/rust_minesweeper written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aarish98/rust_minesweeper on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/aarish98/rust_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" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2520b9ad9204bfde3045183de54988961b4974340c6ef469c938cb28e04d246f
[INFO] running `Command { std: "docker" "start" "-a" "2520b9ad9204bfde3045183de54988961b4974340c6ef469c938cb28e04d246f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2520b9ad9204bfde3045183de54988961b4974340c6ef469c938cb28e04d246f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2520b9ad9204bfde3045183de54988961b4974340c6ef469c938cb28e04d246f", kill_on_drop: false }`
[INFO] [stdout] 2520b9ad9204bfde3045183de54988961b4974340c6ef469c938cb28e04d246f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee7584bcb376db76c56c26e9325d2f9cb8dec9f96a4a7fc948a1682a6dcae683
[INFO] running `Command { std: "docker" "start" "-a" "ee7584bcb376db76c56c26e9325d2f9cb8dec9f96a4a7fc948a1682a6dcae683", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling getrandom v0.2.9
[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 rust_minesweeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `collections::btree_map::Range`
[INFO] [stdout]  --> src/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io, collections::btree_map::Range};
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut grid  =  [[0u8; 4]; 6];
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut mineSweeper = MineSweeper::new(grid_size, grid_size, (0.25_f64 * (grid_size* grid_size) as f64).floor() as usize );
[INFO] [stdout]    |             ----^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grid`
[INFO] [stdout]   --> src/main.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut grid  =  [[0u8; 4]; 6];
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_grid`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mineSweeper`
[INFO] [stdout]   --> src/main.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut mineSweeper = MineSweeper::new(grid_size, grid_size, (0.25_f64 * (grid_size* grid_size) as f64).floor() as usize );
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mineSweeper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width`, `height`, `open_cells`, `mines`, and `flagged_cells` are never read
[INFO] [stdout]   --> src/main.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | struct MineSweeper {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout]  7 |     width: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]  8 |     height: i32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]  9 |     open_cells: Vec<Position>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 10 |     mines: Vec<Position>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 11 |     flagged_cells: Vec<Position>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `mineSweeper` should have a snake case name
[INFO] [stdout]   --> src/main.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut mineSweeper = MineSweeper::new(grid_size, grid_size, (0.25_f64 * (grid_size* grid_size) as f64).floor() as usize );
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `mine_sweeper`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.31s
[INFO] running `Command { std: "docker" "inspect" "ee7584bcb376db76c56c26e9325d2f9cb8dec9f96a4a7fc948a1682a6dcae683", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee7584bcb376db76c56c26e9325d2f9cb8dec9f96a4a7fc948a1682a6dcae683", kill_on_drop: false }`
[INFO] [stdout] ee7584bcb376db76c56c26e9325d2f9cb8dec9f96a4a7fc948a1682a6dcae683
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0417da77a4a1b054a67ec54377791803faa8483a1ea8bde03aec0da9e4959bbf
[INFO] running `Command { std: "docker" "start" "-a" "0417da77a4a1b054a67ec54377791803faa8483a1ea8bde03aec0da9e4959bbf", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_minesweeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `collections::btree_map::Range`
[INFO] [stdout]  --> src/main.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io, collections::btree_map::Range};
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut grid  =  [[0u8; 4]; 6];
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut mineSweeper = MineSweeper::new(grid_size, grid_size, (0.25_f64 * (grid_size* grid_size) as f64).floor() as usize );
[INFO] [stdout]    |             ----^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grid`
[INFO] [stdout]   --> src/main.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut grid  =  [[0u8; 4]; 6];
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_grid`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mineSweeper`
[INFO] [stdout]   --> src/main.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut mineSweeper = MineSweeper::new(grid_size, grid_size, (0.25_f64 * (grid_size* grid_size) as f64).floor() as usize );
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mineSweeper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `width`, `height`, `open_cells`, `mines`, and `flagged_cells` are never read
[INFO] [stdout]   --> src/main.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | struct MineSweeper {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout]  7 |     width: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]  8 |     height: i32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]  9 |     open_cells: Vec<Position>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 10 |     mines: Vec<Position>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 11 |     flagged_cells: Vec<Position>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `mineSweeper` should have a snake case name
[INFO] [stdout]   --> src/main.rs:71:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut mineSweeper = MineSweeper::new(grid_size, grid_size, (0.25_f64 * (grid_size* grid_size) as f64).floor() as usize );
[INFO] [stdout]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `mine_sweeper`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "0417da77a4a1b054a67ec54377791803faa8483a1ea8bde03aec0da9e4959bbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0417da77a4a1b054a67ec54377791803faa8483a1ea8bde03aec0da9e4959bbf", kill_on_drop: false }`
[INFO] [stdout] 0417da77a4a1b054a67ec54377791803faa8483a1ea8bde03aec0da9e4959bbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7377352dc89d7022f89e885e2f1ba5e2df8e70d0e19e2bba56f258a885ddd037
[INFO] running `Command { std: "docker" "start" "-a" "7377352dc89d7022f89e885e2f1ba5e2df8e70d0e19e2bba56f258a885ddd037", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `collections::btree_map::Range`
[INFO] [stderr]  --> src/main.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{io, collections::btree_map::Range};
[INFO] [stderr]   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let mut grid  =  [[0u8; 4]; 6];
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut mineSweeper = MineSweeper::new(grid_size, grid_size, (0.25_f64 * (grid_size* grid_size) as f64).floor() as usize );
[INFO] [stderr]    |             ----^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `grid`
[INFO] [stderr]   --> src/main.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let mut grid  =  [[0u8; 4]; 6];
[INFO] [stderr]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_grid`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mineSweeper`
[INFO] [stderr]   --> src/main.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut mineSweeper = MineSweeper::new(grid_size, grid_size, (0.25_f64 * (grid_size* grid_size) as f64).floor() as usize );
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mineSweeper`
[INFO] [stderr] 
[INFO] [stderr] warning: fields `width`, `height`, `open_cells`, `mines`, and `flagged_cells` are never read
[INFO] [stderr]   --> src/main.rs:7:5
[INFO] [stderr]    |
[INFO] [stderr]  6 | struct MineSweeper {
[INFO] [stderr]    |        ----------- fields in this struct
[INFO] [stderr]  7 |     width: i32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]  8 |     height: i32,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]  9 |     open_cells: Vec<Position>,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 10 |     mines: Vec<Position>,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 11 |     flagged_cells: Vec<Position>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `mineSweeper` should have a snake case name
[INFO] [stderr]   --> src/main.rs:71:17
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut mineSweeper = MineSweeper::new(grid_size, grid_size, (0.25_f64 * (grid_size* grid_size) as f64).floor() as usize );
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: convert the identifier to snake case: `mine_sweeper`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_minesweeper` (bin "rust_minesweeper" test) generated 7 warnings (run `cargo fix --bin "rust_minesweeper" -p rust_minesweeper --tests` to apply 5 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_minesweeper-73adebc537792eab)
[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" "7377352dc89d7022f89e885e2f1ba5e2df8e70d0e19e2bba56f258a885ddd037", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7377352dc89d7022f89e885e2f1ba5e2df8e70d0e19e2bba56f258a885ddd037", kill_on_drop: false }`
[INFO] [stdout] 7377352dc89d7022f89e885e2f1ba5e2df8e70d0e19e2bba56f258a885ddd037
