Dec 19 13:50:21.089 INFO checking lasagnaphil/minesweeper-rs against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 13:50:21.089 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/lasagnaphil/minesweeper-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 13:50:21.652 INFO [stdout] e9bbe4fc7feebf366c4316d39cdcfefdf7d0314fd4625377e9db2f3071b6300f
Dec 19 13:50:21.654 INFO running `"docker" "start" "-a" "e9bbe4fc7feebf366c4316d39cdcfefdf7d0314fd4625377e9db2f3071b6300f"`
Dec 19 13:50:23.089 INFO [stderr]     Checking minesweeper v0.1.0 (/opt/crater/workdir)
Dec 19 13:50:23.508 INFO [stderr] warning: unused imports: `sample`, `thread_rng`
Dec 19 13:50:23.508 INFO [stderr]  --> src/main.rs:8:12
Dec 19 13:50:23.508 INFO [stderr]   |
Dec 19 13:50:23.508 INFO [stderr] 8 | use rand::{thread_rng, sample};
Dec 19 13:50:23.508 INFO [stderr]   |            ^^^^^^^^^^  ^^^^^^
Dec 19 13:50:23.508 INFO [stderr]   |
Dec 19 13:50:23.508 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:50:23.508 INFO [stderr] 
Dec 19 13:50:23.508 INFO [stderr] warning: unused import: `MouseEvent`
Dec 19 13:50:23.508 INFO [stderr]   --> src/main.rs:12:34
Dec 19 13:50:23.508 INFO [stderr]    |
Dec 19 13:50:23.508 INFO [stderr] 12 | use termion::event::{Key, Event, MouseEvent};
Dec 19 13:50:23.508 INFO [stderr]    |                                  ^^^^^^^^^^
Dec 19 13:50:23.508 INFO [stderr] 
Dec 19 13:50:23.508 INFO [stderr] warning: unused imports: `color`, `style`
Dec 19 13:50:23.508 INFO [stderr]   --> src/main.rs:15:15
Dec 19 13:50:23.508 INFO [stderr]    |
Dec 19 13:50:23.508 INFO [stderr] 15 | use termion::{color, style, cursor};
Dec 19 13:50:23.508 INFO [stderr]    |               ^^^^^  ^^^^^
Dec 19 13:50:23.508 INFO [stderr] 
Dec 19 13:50:23.508 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 19 13:50:23.508 INFO [stderr]    --> src/main.rs:120:54
Dec 19 13:50:23.508 INFO [stderr]     |
Dec 19 13:50:23.508 INFO [stderr] 120 |         let list = (0..self.width).cartesian_product((0..self.height));
Dec 19 13:50:23.508 INFO [stderr]     |                                                      ^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 13:50:23.508 INFO [stderr]     |
Dec 19 13:50:23.508 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 19 13:50:23.508 INFO [stderr] 
Dec 19 13:50:23.541 INFO [stderr] warning: unused imports: `sample`, `thread_rng`
Dec 19 13:50:23.541 INFO [stderr]  --> src/main.rs:8:12
Dec 19 13:50:23.541 INFO [stderr]   |
Dec 19 13:50:23.541 INFO [stderr] 8 | use rand::{thread_rng, sample};
Dec 19 13:50:23.541 INFO [stderr]   |            ^^^^^^^^^^  ^^^^^^
Dec 19 13:50:23.541 INFO [stderr]   |
Dec 19 13:50:23.541 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 13:50:23.541 INFO [stderr] 
Dec 19 13:50:23.541 INFO [stderr] warning: unused import: `MouseEvent`
Dec 19 13:50:23.541 INFO [stderr]   --> src/main.rs:12:34
Dec 19 13:50:23.541 INFO [stderr]    |
Dec 19 13:50:23.541 INFO [stderr] 12 | use termion::event::{Key, Event, MouseEvent};
Dec 19 13:50:23.541 INFO [stderr]    |                                  ^^^^^^^^^^
Dec 19 13:50:23.541 INFO [stderr] 
Dec 19 13:50:23.541 INFO [stderr] warning: unused imports: `color`, `style`
Dec 19 13:50:23.541 INFO [stderr]   --> src/main.rs:15:15
Dec 19 13:50:23.541 INFO [stderr]    |
Dec 19 13:50:23.541 INFO [stderr] 15 | use termion::{color, style, cursor};
Dec 19 13:50:23.541 INFO [stderr]    |               ^^^^^  ^^^^^
Dec 19 13:50:23.541 INFO [stderr] 
Dec 19 13:50:23.541 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 19 13:50:23.541 INFO [stderr]    --> src/main.rs:120:54
Dec 19 13:50:23.541 INFO [stderr]     |
Dec 19 13:50:23.541 INFO [stderr] 120 |         let list = (0..self.width).cartesian_product((0..self.height));
Dec 19 13:50:23.541 INFO [stderr]     |                                                      ^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 13:50:23.541 INFO [stderr]     |
Dec 19 13:50:23.541 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 19 13:50:23.541 INFO [stderr] 
Dec 19 13:50:23.787 INFO [stderr] warning: variable `gameConfig` should have a snake case name such as `game_config`
Dec 19 13:50:23.787 INFO [stderr]    --> src/main.rs:284:9
Dec 19 13:50:23.787 INFO [stderr]     |
Dec 19 13:50:23.787 INFO [stderr] 284 |     let gameConfig = match matches.value_of("DIFFICULTY") {
Dec 19 13:50:23.787 INFO [stderr]     |         ^^^^^^^^^^
Dec 19 13:50:23.787 INFO [stderr]     |
Dec 19 13:50:23.787 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Dec 19 13:50:23.787 INFO [stderr] 
Dec 19 13:50:23.812 INFO [stderr] warning: variable `gameConfig` should have a snake case name such as `game_config`
Dec 19 13:50:23.812 INFO [stderr]    --> src/main.rs:284:9
Dec 19 13:50:23.816 INFO [stderr]     |
Dec 19 13:50:23.816 INFO [stderr] 284 |     let gameConfig = match matches.value_of("DIFFICULTY") {
Dec 19 13:50:23.816 INFO [stderr]     |         ^^^^^^^^^^
Dec 19 13:50:23.816 INFO [stderr]     |
Dec 19 13:50:23.816 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Dec 19 13:50:23.816 INFO [stderr] 
Dec 19 13:50:23.864 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
Dec 19 13:50:24.502 INFO running `"docker" "inspect" "e9bbe4fc7feebf366c4316d39cdcfefdf7d0314fd4625377e9db2f3071b6300f"`
Dec 19 13:50:24.798 INFO running `"docker" "rm" "-f" "e9bbe4fc7feebf366c4316d39cdcfefdf7d0314fd4625377e9db2f3071b6300f"`
Dec 19 13:50:25.008 INFO [stdout] e9bbe4fc7feebf366c4316d39cdcfefdf7d0314fd4625377e9db2f3071b6300f