[INFO] updating cached repository lasagnaphil/minesweeper-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lasagnaphil/minesweeper-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lasagnaphil/minesweeper-rs" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/lasagnaphil/minesweeper-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/lasagnaphil/minesweeper-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lasagnaphil/minesweeper-rs" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/lasagnaphil/minesweeper-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/lasagnaphil/minesweeper-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 47ba8090057e4dc2fb8b7ae575499ce6169f51b5
[INFO] sha for GitHub repo lasagnaphil/minesweeper-rs: 47ba8090057e4dc2fb8b7ae575499ce6169f51b5
[INFO] validating manifest of lasagnaphil/minesweeper-rs on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lasagnaphil/minesweeper-rs on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lasagnaphil/minesweeper-rs
[INFO] finished frobbing lasagnaphil/minesweeper-rs
[INFO] frobbed toml for lasagnaphil/minesweeper-rs written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/lasagnaphil/minesweeper-rs/Cargo.toml
[INFO] started frobbing lasagnaphil/minesweeper-rs
[INFO] finished frobbing lasagnaphil/minesweeper-rs
[INFO] frobbed toml for lasagnaphil/minesweeper-rs written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/lasagnaphil/minesweeper-rs/Cargo.toml
[INFO] crate lasagnaphil/minesweeper-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking lasagnaphil/minesweeper-rs against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e06e0f2da6867b56a417613e1ba3699d631a3be659e57cf5078bca7cf45e339a
[INFO] running `"docker" "start" "-a" "e06e0f2da6867b56a417613e1ba3699d631a3be659e57cf5078bca7cf45e339a"`
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking minesweeper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `sample`, `thread_rng`
[INFO] [stderr]  --> src/main.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::{thread_rng, sample};
[INFO] [stderr]   |            ^^^^^^^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MouseEvent`
[INFO] [stderr]   --> src/main.rs:12:34
[INFO] [stderr]    |
[INFO] [stderr] 12 | use termion::event::{Key, Event, MouseEvent};
[INFO] [stderr]    |                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `color`, `style`
[INFO] [stderr]   --> src/main.rs:15:15
[INFO] [stderr]    |
[INFO] [stderr] 15 | use termion::{color, style, cursor};
[INFO] [stderr]    |               ^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/main.rs:120:54
[INFO] [stderr]     |
[INFO] [stderr] 120 |         let list = (0..self.width).cartesian_product((0..self.height));
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `sample`, `thread_rng`
[INFO] [stderr]  --> src/main.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::{thread_rng, sample};
[INFO] [stderr]   |            ^^^^^^^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MouseEvent`
[INFO] [stderr]   --> src/main.rs:12:34
[INFO] [stderr]    |
[INFO] [stderr] 12 | use termion::event::{Key, Event, MouseEvent};
[INFO] [stderr]    |                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `color`, `style`
[INFO] [stderr]   --> src/main.rs:15:15
[INFO] [stderr]    |
[INFO] [stderr] 15 | use termion::{color, style, cursor};
[INFO] [stderr]    |               ^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/main.rs:120:54
[INFO] [stderr]     |
[INFO] [stderr] 120 |         let list = (0..self.width).cartesian_product((0..self.height));
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `gameConfig` should have a snake case name
[INFO] [stderr]    --> src/main.rs:284:9
[INFO] [stderr]     |
[INFO] [stderr] 284 |     let gameConfig = match matches.value_of("DIFFICULTY") {
[INFO] [stderr]     |         ^^^^^^^^^^ help: convert the identifier to snake case: `game_config`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `gameConfig` should have a snake case name
[INFO] [stderr]    --> src/main.rs:284:9
[INFO] [stderr]     |
[INFO] [stderr] 284 |     let gameConfig = match matches.value_of("DIFFICULTY") {
[INFO] [stderr]     |         ^^^^^^^^^^ help: convert the identifier to snake case: `game_config`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `"docker" "inspect" "e06e0f2da6867b56a417613e1ba3699d631a3be659e57cf5078bca7cf45e339a"`
[INFO] running `"docker" "rm" "-f" "e06e0f2da6867b56a417613e1ba3699d631a3be659e57cf5078bca7cf45e339a"`
[INFO] [stdout] e06e0f2da6867b56a417613e1ba3699d631a3be659e57cf5078bca7cf45e339a