Dec 19 18:31:08.853 INFO checking daemanos/sudoku against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 18:31:08.853 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/daemanos/sudoku:/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 18:31:09.029 INFO [stdout] c048c7f10d946db6bcc55759b285c9f66b1cf58e8baf7f9d6fcb9c0564dcfe58
Dec 19 18:31:09.032 INFO running `"docker" "start" "-a" "c048c7f10d946db6bcc55759b285c9f66b1cf58e8baf7f9d6fcb9c0564dcfe58"`
Dec 19 18:31:09.648 INFO [stderr]     Checking sudoku v0.1.0 (/opt/crater/workdir)
Dec 19 18:31:09.901 INFO [stderr] warning: unused variable: `grid`
Dec 19 18:31:09.901 INFO [stderr]   --> src/main.rs:82:9
Dec 19 18:31:09.901 INFO [stderr]    |
Dec 19 18:31:09.901 INFO [stderr] 82 |     let grid = match read_grid(&path) {
Dec 19 18:31:09.901 INFO [stderr]    |         ^^^^ help: consider using `_grid` instead
Dec 19 18:31:09.901 INFO [stderr]    |
Dec 19 18:31:09.901 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 18:31:09.901 INFO [stderr] 
Dec 19 18:31:09.916 INFO [stderr] warning: unused variable: `grid`
Dec 19 18:31:09.916 INFO [stderr]   --> src/main.rs:82:9
Dec 19 18:31:09.917 INFO [stderr]    |
Dec 19 18:31:09.917 INFO [stderr] 82 |     let grid = match read_grid(&path) {
Dec 19 18:31:09.917 INFO [stderr]    |         ^^^^ help: consider using `_grid` instead
Dec 19 18:31:09.917 INFO [stderr]    |
Dec 19 18:31:09.917 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 18:31:09.917 INFO [stderr] 
Dec 19 18:31:09.918 INFO [stderr] warning: field is never used: `fixed`
Dec 19 18:31:09.918 INFO [stderr]  --> src/main.rs:9:5
Dec 19 18:31:09.918 INFO [stderr]   |
Dec 19 18:31:09.918 INFO [stderr] 9 |     fixed: bool,
Dec 19 18:31:09.918 INFO [stderr]   |     ^^^^^^^^^^^
Dec 19 18:31:09.918 INFO [stderr]   |
Dec 19 18:31:09.918 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 18:31:09.918 INFO [stderr] 
Dec 19 18:31:09.918 INFO [stderr] warning: field is never used: `val`
Dec 19 18:31:09.918 INFO [stderr]   --> src/main.rs:10:5
Dec 19 18:31:09.918 INFO [stderr]    |
Dec 19 18:31:09.918 INFO [stderr] 10 |     val: i8,
Dec 19 18:31:09.918 INFO [stderr]    |     ^^^^^^^
Dec 19 18:31:09.918 INFO [stderr] 
Dec 19 18:31:09.918 INFO [stderr] warning: field is never used: `size`
Dec 19 18:31:09.918 INFO [stderr]   --> src/main.rs:14:5
Dec 19 18:31:09.918 INFO [stderr]    |
Dec 19 18:31:09.918 INFO [stderr] 14 |     size: i8,
Dec 19 18:31:09.918 INFO [stderr]    |     ^^^^^^^^
Dec 19 18:31:09.918 INFO [stderr] 
Dec 19 18:31:09.918 INFO [stderr] warning: field is never used: `block_size`
Dec 19 18:31:09.918 INFO [stderr]   --> src/main.rs:15:5
Dec 19 18:31:09.918 INFO [stderr]    |
Dec 19 18:31:09.918 INFO [stderr] 15 |     block_size: i8,
Dec 19 18:31:09.918 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 19 18:31:09.918 INFO [stderr] 
Dec 19 18:31:09.918 INFO [stderr] warning: field is never used: `data`
Dec 19 18:31:09.918 INFO [stderr]   --> src/main.rs:16:5
Dec 19 18:31:09.918 INFO [stderr]    |
Dec 19 18:31:09.918 INFO [stderr] 16 |     data: Vec<Vec<Cell>>,
Dec 19 18:31:09.918 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 18:31:09.918 INFO [stderr] 
Dec 19 18:31:09.929 INFO [stderr] warning: field is never used: `fixed`
Dec 19 18:31:09.929 INFO [stderr]  --> src/main.rs:9:5
Dec 19 18:31:09.929 INFO [stderr]   |
Dec 19 18:31:09.929 INFO [stderr] 9 |     fixed: bool,
Dec 19 18:31:09.929 INFO [stderr]   |     ^^^^^^^^^^^
Dec 19 18:31:09.929 INFO [stderr]   |
Dec 19 18:31:09.929 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 18:31:09.929 INFO [stderr] 
Dec 19 18:31:09.929 INFO [stderr] warning: field is never used: `val`
Dec 19 18:31:09.929 INFO [stderr]   --> src/main.rs:10:5
Dec 19 18:31:09.929 INFO [stderr]    |
Dec 19 18:31:09.929 INFO [stderr] 10 |     val: i8,
Dec 19 18:31:09.929 INFO [stderr]    |     ^^^^^^^
Dec 19 18:31:09.929 INFO [stderr] 
Dec 19 18:31:09.929 INFO [stderr] warning: field is never used: `size`
Dec 19 18:31:09.929 INFO [stderr]   --> src/main.rs:14:5
Dec 19 18:31:09.929 INFO [stderr]    |
Dec 19 18:31:09.929 INFO [stderr] 14 |     size: i8,
Dec 19 18:31:09.929 INFO [stderr]    |     ^^^^^^^^
Dec 19 18:31:09.929 INFO [stderr] 
Dec 19 18:31:09.929 INFO [stderr] warning: field is never used: `block_size`
Dec 19 18:31:09.929 INFO [stderr]   --> src/main.rs:15:5
Dec 19 18:31:09.929 INFO [stderr]    |
Dec 19 18:31:09.929 INFO [stderr] 15 |     block_size: i8,
Dec 19 18:31:09.929 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 19 18:31:09.929 INFO [stderr] 
Dec 19 18:31:09.929 INFO [stderr] warning: field is never used: `data`
Dec 19 18:31:09.929 INFO [stderr]   --> src/main.rs:16:5
Dec 19 18:31:09.929 INFO [stderr]    |
Dec 19 18:31:09.929 INFO [stderr] 16 |     data: Vec<Vec<Cell>>,
Dec 19 18:31:09.929 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 18:31:09.929 INFO [stderr] 
Dec 19 18:31:09.934 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:31:09.934 INFO [stderr]   --> src/main.rs:36:5
Dec 19 18:31:09.934 INFO [stderr]    |
Dec 19 18:31:09.934 INFO [stderr] 36 |     file.read_to_string(&mut contents);
Dec 19 18:31:09.934 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:31:09.934 INFO [stderr]    |
Dec 19 18:31:09.934 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 18:31:09.934 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:31:09.934 INFO [stderr] 
Dec 19 18:31:09.940 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 18:31:09.940 INFO [stderr]   --> src/main.rs:36:5
Dec 19 18:31:09.940 INFO [stderr]    |
Dec 19 18:31:09.940 INFO [stderr] 36 |     file.read_to_string(&mut contents);
Dec 19 18:31:09.940 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:31:09.940 INFO [stderr]    |
Dec 19 18:31:09.940 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 18:31:09.940 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 18:31:09.940 INFO [stderr] 
Dec 19 18:31:09.988 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
Dec 19 18:31:10.416 INFO running `"docker" "inspect" "c048c7f10d946db6bcc55759b285c9f66b1cf58e8baf7f9d6fcb9c0564dcfe58"`
Dec 19 18:31:10.666 INFO running `"docker" "rm" "-f" "c048c7f10d946db6bcc55759b285c9f66b1cf58e8baf7f9d6fcb9c0564dcfe58"`
Dec 19 18:31:10.804 INFO [stdout] c048c7f10d946db6bcc55759b285c9f66b1cf58e8baf7f9d6fcb9c0564dcfe58