[INFO] updating cached repository sdbondi/rust-sudoku-solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sdbondi/rust-sudoku-solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sdbondi/rust-sudoku-solver" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/sdbondi/rust-sudoku-solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/sdbondi/rust-sudoku-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sdbondi/rust-sudoku-solver" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/sdbondi/rust-sudoku-solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/sdbondi/rust-sudoku-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ed82543988f6c485955e2a7ae6c503bbcefd6b7a
[INFO] sha for GitHub repo sdbondi/rust-sudoku-solver: ed82543988f6c485955e2a7ae6c503bbcefd6b7a
[INFO] validating manifest of sdbondi/rust-sudoku-solver on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sdbondi/rust-sudoku-solver on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sdbondi/rust-sudoku-solver
[INFO] finished frobbing sdbondi/rust-sudoku-solver
[INFO] frobbed toml for sdbondi/rust-sudoku-solver written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/sdbondi/rust-sudoku-solver/Cargo.toml
[INFO] started frobbing sdbondi/rust-sudoku-solver
[INFO] finished frobbing sdbondi/rust-sudoku-solver
[INFO] frobbed toml for sdbondi/rust-sudoku-solver written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/sdbondi/rust-sudoku-solver/Cargo.toml
[INFO] crate sdbondi/rust-sudoku-solver already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking sdbondi/rust-sudoku-solver against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-6/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/sdbondi/rust-sudoku-solver:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] da8d93d167a82e64042c7787fa7068f22259b8cac8daf7eba9d4156b6079a24a
[INFO] running `"docker" "start" "-a" "da8d93d167a82e64042c7787fa7068f22259b8cac8daf7eba9d4156b6079a24a"`
[INFO] [stderr]    Compiling x11-dl v2.18.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking pistoncore-input v0.21.0
[INFO] [stderr]     Checking wayland-protocols v0.12.5
[INFO] [stderr]     Checking wayland-kbd v0.13.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking rayon v1.0.2
[INFO] [stderr]     Checking wayland-window v0.13.3
[INFO] [stderr]     Checking pistoncore-window v0.32.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.37.0
[INFO] [stderr]     Checking pistoncore-sdl2_window v0.50.0
[INFO] [stderr]     Checking winit v0.12.0
[INFO] [stderr]     Checking piston v0.37.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking glutin v0.14.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.47.0
[INFO] [stderr]     Checking piston-gfx_texture v0.32.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.53.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.51.0
[INFO] [stderr]     Checking piston_window v0.80.0
[INFO] [stderr]     Checking sudoku-solver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `piston::event_loop::*`
[INFO] [stderr]  --> src/cell.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use piston::event_loop::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `piston::event_loop::*`
[INFO] [stderr]  --> src/cell.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use piston::event_loop::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `board`
[INFO] [stderr]   --> src/board.rs:15:3
[INFO] [stderr]    |
[INFO] [stderr] 15 |   board: [[u8; BOARD_SIZE]; BOARD_SIZE],
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Selected`
[INFO] [stderr]   --> src/cell.rs:12:3
[INFO] [stderr]    |
[INFO] [stderr] 12 |   Selected,
[INFO] [stderr]    |   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `number`
[INFO] [stderr]   --> src/cell.rs:21:3
[INFO] [stderr]    |
[INFO] [stderr] 21 |   number: u8,
[INFO] [stderr]    |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `board`
[INFO] [stderr]   --> src/board.rs:15:3
[INFO] [stderr]    |
[INFO] [stderr] 15 |   board: [[u8; BOARD_SIZE]; BOARD_SIZE],
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Selected`
[INFO] [stderr]   --> src/cell.rs:12:3
[INFO] [stderr]    |
[INFO] [stderr] 12 |   Selected,
[INFO] [stderr]    |   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `number`
[INFO] [stderr]   --> src/cell.rs:21:3
[INFO] [stderr]    |
[INFO] [stderr] 21 |   number: u8,
[INFO] [stderr]    |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.59s
[INFO] running `"docker" "inspect" "da8d93d167a82e64042c7787fa7068f22259b8cac8daf7eba9d4156b6079a24a"`
[INFO] running `"docker" "rm" "-f" "da8d93d167a82e64042c7787fa7068f22259b8cac8daf7eba9d4156b6079a24a"`
[INFO] [stdout] da8d93d167a82e64042c7787fa7068f22259b8cac8daf7eba9d4156b6079a24a