[INFO] updating cached repository atmoPunk/minesweeper_rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/atmoPunk/minesweeper_rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/atmoPunk/minesweeper_rs" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/atmoPunk/minesweeper_rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/atmoPunk/minesweeper_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/atmoPunk/minesweeper_rs" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/atmoPunk/minesweeper_rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/atmoPunk/minesweeper_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f95cc74911a8c7894c2c896948db92c722912ea1
[INFO] sha for GitHub repo atmoPunk/minesweeper_rs: f95cc74911a8c7894c2c896948db92c722912ea1
[INFO] validating manifest of atmoPunk/minesweeper_rs 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 atmoPunk/minesweeper_rs 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 atmoPunk/minesweeper_rs
[INFO] finished frobbing atmoPunk/minesweeper_rs
[INFO] frobbed toml for atmoPunk/minesweeper_rs written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/atmoPunk/minesweeper_rs/Cargo.toml
[INFO] started frobbing atmoPunk/minesweeper_rs
[INFO] finished frobbing atmoPunk/minesweeper_rs
[INFO] frobbed toml for atmoPunk/minesweeper_rs written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/atmoPunk/minesweeper_rs/Cargo.toml
[INFO] crate atmoPunk/minesweeper_rs 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 atmoPunk/minesweeper_rs against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-3/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/atmoPunk/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8a388d27fcab8633ba7866ffe6057bdba08ea0602fa6fb8343629c131d30769a
[INFO] running `"docker" "start" "-a" "8a388d27fcab8633ba7866ffe6057bdba08ea0602fa6fb8343629c131d30769a"`
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking x11-dl v2.18.3
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]    Compiling glutin v0.19.0
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking wayland-client v0.21.13
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]     Checking wayland-protocols v0.21.13
[INFO] [stderr]     Checking glutin_glx_sys v0.1.5
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.21.2
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking winit v0.19.1
[INFO] [stderr]     Checking winit v0.18.1
[INFO] [stderr]     Checking piston-gfx_texture v0.36.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.65.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.61.0
[INFO] [stderr]     Checking glutin v0.21.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.62.1
[INFO] [stderr]     Checking pistoncore-glutin_window v0.61.0
[INFO] [stderr]     Checking piston_window v0.99.0
[INFO] [stderr]     Checking minesweeper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/tile.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/tile.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/board.rs:145:29
[INFO] [stderr]     |
[INFO] [stderr] 143 |         match self.get_tile_real(mouse_pos[0], mouse_pos[1]) {
[INFO] [stderr]     |               ---- immutable borrow occurs here
[INFO] [stderr] 144 |             Some(tile) => {
[INFO] [stderr] 145 |                 open_mine = self.open_neighbors(tile.pos_x, tile.pos_y);
[INFO] [stderr]     |                             ^^^^                ---------- immutable borrow later used here
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             mutable borrow occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/board.rs:145:29
[INFO] [stderr]     |
[INFO] [stderr] 143 |         match self.get_tile_real(mouse_pos[0], mouse_pos[1]) {
[INFO] [stderr]     |               ---- immutable borrow occurs here
[INFO] [stderr] 144 |             Some(tile) => {
[INFO] [stderr] 145 |                 open_mine = self.open_neighbors(tile.pos_x, tile.pos_y);
[INFO] [stderr]     |                             ^^^^                ---------- immutable borrow later used here
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             mutable borrow occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `mine_count`
[INFO] [stderr]  --> src/board.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     mine_count: i32,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `mine_count`
[INFO] [stderr]  --> src/board.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     mine_count: i32,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.15s
[INFO] running `"docker" "inspect" "8a388d27fcab8633ba7866ffe6057bdba08ea0602fa6fb8343629c131d30769a"`
[INFO] running `"docker" "rm" "-f" "8a388d27fcab8633ba7866ffe6057bdba08ea0602fa6fb8343629c131d30769a"`
[INFO] [stdout] 8a388d27fcab8633ba7866ffe6057bdba08ea0602fa6fb8343629c131d30769a