[INFO] updating cached repository Enigmatrix/minesweeper-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Enigmatrix/minesweeper-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Enigmatrix/minesweeper-rust" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Enigmatrix/minesweeper-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Enigmatrix/minesweeper-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Enigmatrix/minesweeper-rust" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Enigmatrix/minesweeper-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Enigmatrix/minesweeper-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 79a2345405ec4fb1ea691f9f1d82447a5e7af228
[INFO] sha for GitHub repo Enigmatrix/minesweeper-rust: 79a2345405ec4fb1ea691f9f1d82447a5e7af228
[INFO] validating manifest of Enigmatrix/minesweeper-rust on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Enigmatrix/minesweeper-rust on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Enigmatrix/minesweeper-rust
[INFO] finished frobbing Enigmatrix/minesweeper-rust
[INFO] frobbed toml for Enigmatrix/minesweeper-rust written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Enigmatrix/minesweeper-rust/Cargo.toml
[INFO] started frobbing Enigmatrix/minesweeper-rust
[INFO] finished frobbing Enigmatrix/minesweeper-rust
[INFO] frobbed toml for Enigmatrix/minesweeper-rust written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Enigmatrix/minesweeper-rust/Cargo.toml
[INFO] crate Enigmatrix/minesweeper-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Enigmatrix/minesweeper-rust against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Enigmatrix/minesweeper-rust:/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2a8b8e700dd6ec0062a56dead6990845f561ee88663dd277b1ac3924a907680a
[INFO] running `"docker" "start" "-a" "2a8b8e700dd6ec0062a56dead6990845f561ee88663dd277b1ac3924a907680a"`
[INFO] [stderr]     Checking rand v0.4.1
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[INFO] [stderr]     Checking x11-dl v2.17.2
[INFO] [stderr]    Compiling gl v0.7.0
[INFO] [stderr]     Checking piston2d-graphics v0.24.0
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]    Compiling serde_derive v1.0.24
[INFO] [stderr]     Checking winit v0.8.3
[INFO] [stderr]     Checking glutin v0.10.1
[INFO] [stderr]     Checking pistoncore-input v0.20.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.50.0
[INFO] [stderr]     Checking pistoncore-window v0.30.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.35.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.43.0
[INFO] [stderr]     Checking piston v0.35.0
[INFO] [stderr]     Checking minesweeper-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `piston::input::*`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use piston::input::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `gameboardcontroller::*`
[INFO] [stderr]  --> src/gameboardview.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use gameboardcontroller::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `graphics::*`
[INFO] [stderr]  --> src/gameboardcontroller.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use graphics::*;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::*`
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::io::*;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `piston::input::*`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use piston::input::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `gameboardcontroller::*`
[INFO] [stderr]  --> src/gameboardview.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use gameboardcontroller::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `graphics::*`
[INFO] [stderr]  --> src/gameboardcontroller.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use graphics::*;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::*`
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::io::*;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `board_rect`
[INFO] [stderr]    --> src/gameboardview.rs:120:17
[INFO] [stderr]     |
[INFO] [stderr] 120 |             let board_rect = [-board_size[0]/2.0,  -board_size[1]/2.0, board_size[0], board_size[1]];
[INFO] [stderr]     |                 ^^^^^^^^^^ help: consider prefixing with an underscore: `_board_rect`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/gameboardview.rs:122:17
[INFO] [stderr]     |
[INFO] [stderr] 122 |             let mut top_left_board = [-board_size[0]/2.0, -board_size[1]/2.0];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_gameboard`
[INFO] [stderr]   --> src/main.rs:76:1
[INFO] [stderr]    |
[INFO] [stderr] 76 | fn print_gameboard(g: &Gameboard) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `board_rect`
[INFO] [stderr]    --> src/gameboardview.rs:120:17
[INFO] [stderr]     |
[INFO] [stderr] 120 |             let board_rect = [-board_size[0]/2.0,  -board_size[1]/2.0, board_size[0], board_size[1]];
[INFO] [stderr]     |                 ^^^^^^^^^^ help: consider prefixing with an underscore: `_board_rect`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/gameboardview.rs:122:17
[INFO] [stderr]     |
[INFO] [stderr] 122 |             let mut top_left_board = [-board_size[0]/2.0, -board_size[1]/2.0];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_gameboard`
[INFO] [stderr]   --> src/main.rs:76:1
[INFO] [stderr]    |
[INFO] [stderr] 76 | fn print_gameboard(g: &Gameboard) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.28s
[INFO] running `"docker" "inspect" "2a8b8e700dd6ec0062a56dead6990845f561ee88663dd277b1ac3924a907680a"`
[INFO] running `"docker" "rm" "-f" "2a8b8e700dd6ec0062a56dead6990845f561ee88663dd277b1ac3924a907680a"`
[INFO] [stdout] 2a8b8e700dd6ec0062a56dead6990845f561ee88663dd277b1ac3924a907680a