Dec 06 14:21:54.171 INFO testing EkardNT/sudoku against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 06 14:21:54.171 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 14:21:54.562 INFO [stdout] 8559ae084ecca9c2fc09ceef9e53b49181065b9df715a8d26997a705cdba631f
Dec 06 14:21:54.565 INFO running `"docker" "start" "-a" "8559ae084ecca9c2fc09ceef9e53b49181065b9df715a8d26997a705cdba631f"`
Dec 06 14:21:56.359 INFO [stderr] usermod: no changes
Dec 06 14:21:56.433 INFO [stderr]    Compiling sudoku v0.1.0 (/source)
Dec 06 14:21:57.024 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:21:57.025 INFO [stderr]    --> src/matrix.rs:185:15
Dec 06 14:21:57.025 INFO [stderr]     |
Dec 06 14:21:57.025 INFO [stderr] 185 |         while (current_down_index != header_index) {
Dec 06 14:21:57.025 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:21:57.025 INFO [stderr]     |
Dec 06 14:21:57.025 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.025 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:21:57.025 INFO [stderr]    --> src/matrix.rs:191:19
Dec 06 14:21:57.025 INFO [stderr]     |
Dec 06 14:21:57.025 INFO [stderr] 191 |             while (current_right_index != current_down_index) {
Dec 06 14:21:57.025 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.025 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:21:57.025 INFO [stderr]    --> src/matrix.rs:223:15
Dec 06 14:21:57.025 INFO [stderr]     |
Dec 06 14:21:57.025 INFO [stderr] 223 |         while (current_up_index != header_index) {
Dec 06 14:21:57.025 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.025 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:21:57.025 INFO [stderr]    --> src/matrix.rs:229:19
Dec 06 14:21:57.025 INFO [stderr]     |
Dec 06 14:21:57.025 INFO [stderr] 229 |             while (current_left_index != current_up_index) {
Dec 06 14:21:57.025 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.025 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:21:57.025 INFO [stderr]    --> src/matrix.rs:307:15
Dec 06 14:21:57.025 INFO [stderr]     |
Dec 06 14:21:57.025 INFO [stderr] 307 |         while (current_down_index != min_header_index) {
Dec 06 14:21:57.025 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.025 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:21:57.025 INFO [stderr]    --> src/matrix.rs:313:19
Dec 06 14:21:57.025 INFO [stderr]     |
Dec 06 14:21:57.025 INFO [stderr] 313 |             while (current_right_index != current_down_index) {
Dec 06 14:21:57.025 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.025 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:21:57.025 INFO [stderr]    --> src/matrix.rs:332:19
Dec 06 14:21:57.025 INFO [stderr]     |
Dec 06 14:21:57.025 INFO [stderr] 332 |             while (current_left_index != current_down_index) {
Dec 06 14:21:57.025 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.025 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:21:57.025 INFO [stderr]    --> src/matrix.rs:358:15
Dec 06 14:21:57.025 INFO [stderr]     |
Dec 06 14:21:57.025 INFO [stderr] 358 |         while (current_header_index != Matrix::ROOT_INDEX) {
Dec 06 14:21:57.025 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.025 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 06 14:21:57.025 INFO [stderr]    --> src/matrix.rs:376:24
Dec 06 14:21:57.025 INFO [stderr]     |
Dec 06 14:21:57.025 INFO [stderr] 376 |                     if (current_index == row_front_index) {
Dec 06 14:21:57.025 INFO [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.025 INFO [stderr] warning: unused imports: `Debug`, `Display`, `Formatter`, `Write`
Dec 06 14:21:57.025 INFO [stderr]  --> src/lib.rs:5:16
Dec 06 14:21:57.025 INFO [stderr]   |
Dec 06 14:21:57.025 INFO [stderr] 5 | use std::fmt::{Display, Write, Formatter, Debug};
Dec 06 14:21:57.025 INFO [stderr]   |                ^^^^^^^  ^^^^^  ^^^^^^^^^  ^^^^^
Dec 06 14:21:57.025 INFO [stderr]   |
Dec 06 14:21:57.025 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.025 INFO [stderr] warning: unused import: `std::str::FromStr`
Dec 06 14:21:57.025 INFO [stderr]  --> src/lib.rs:6:5
Dec 06 14:21:57.025 INFO [stderr]   |
Dec 06 14:21:57.025 INFO [stderr] 6 | use std::str::FromStr;
Dec 06 14:21:57.025 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.025 INFO [stderr] warning: unused import: `matrix::*`
Dec 06 14:21:57.025 INFO [stderr]  --> src/lib.rs:9:5
Dec 06 14:21:57.025 INFO [stderr]   |
Dec 06 14:21:57.025 INFO [stderr] 9 | use matrix::*;
Dec 06 14:21:57.025 INFO [stderr]   |     ^^^^^^^^^
Dec 06 14:21:57.025 INFO [stderr] 
Dec 06 14:21:57.236 INFO [stderr] warning: unused variable: `i`
Dec 06 14:21:57.236 INFO [stderr]    --> src/board.rs:211:13
Dec 06 14:21:57.236 INFO [stderr]     |
Dec 06 14:21:57.236 INFO [stderr] 211 |         let i = col + row * 9;
Dec 06 14:21:57.236 INFO [stderr]     |             ^ help: consider using `_i` instead
Dec 06 14:21:57.236 INFO [stderr]     |
Dec 06 14:21:57.236 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 06 14:21:57.236 INFO [stderr] 
Dec 06 14:21:57.236 INFO [stderr] warning: unused variable: `column`
Dec 06 14:21:57.236 INFO [stderr]    --> src/coords.rs:119:28
Dec 06 14:21:57.236 INFO [stderr]     |
Dec 06 14:21:57.236 INFO [stderr] 119 |     pub fn to_dense(&self, column: &SparseColumn) -> DenseRow {
Dec 06 14:21:57.236 INFO [stderr]     |                            ^^^^^^ help: consider using `_column` instead
Dec 06 14:21:57.236 INFO [stderr] 
Dec 06 14:21:57.236 INFO [stderr] warning: unused variable: `sparse_row`
Dec 06 14:21:57.236 INFO [stderr]   --> src/lib.rs:95:17
Dec 06 14:21:57.236 INFO [stderr]    |
Dec 06 14:21:57.236 INFO [stderr] 95 |             let sparse_row = SparseRow::new(row_index);
Dec 06 14:21:57.236 INFO [stderr]    |                 ^^^^^^^^^^ help: consider using `_sparse_row` instead
Dec 06 14:21:57.236 INFO [stderr] 
Dec 06 14:21:57.236 INFO [stderr] warning: unused variable: `board`
Dec 06 14:21:57.236 INFO [stderr]    --> src/lib.rs:123:25
Dec 06 14:21:57.236 INFO [stderr]     |
Dec 06 14:21:57.236 INFO [stderr] 123 |     fn solve(&mut self, board: &mut Board) -> Result<(), ()> {
Dec 06 14:21:57.236 INFO [stderr]     |                         ^^^^^ help: consider using `_board` instead
Dec 06 14:21:57.236 INFO [stderr] 
Dec 06 14:21:57.248 INFO [stderr] warning: variable does not need to be mutable
Dec 06 14:21:57.249 INFO [stderr]   --> src/lib.rs:65:13
Dec 06 14:21:57.249 INFO [stderr]    |
Dec 06 14:21:57.249 INFO [stderr] 65 |         let mut matrix = [[Link::default(); NONZERO_CONSTRAINTS_PER_POSSIBILITY]; POSSIBILITIES];
Dec 06 14:21:57.249 INFO [stderr]    |             ----^^^^^^
Dec 06 14:21:57.249 INFO [stderr]    |             |
Dec 06 14:21:57.249 INFO [stderr]    |             help: remove this `mut`
Dec 06 14:21:57.249 INFO [stderr]    |
Dec 06 14:21:57.249 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 14:21:57.249 INFO [stderr] 
Dec 06 14:21:57.249 INFO [stderr] warning: variable does not need to be mutable
Dec 06 14:21:57.252 INFO [stderr]   --> src/lib.rs:66:13
Dec 06 14:21:57.252 INFO [stderr]    |
Dec 06 14:21:57.252 INFO [stderr] 66 |         let mut headers = [Header::default(); CONSTRAINTS];
Dec 06 14:21:57.252 INFO [stderr]    |             ----^^^^^^^
Dec 06 14:21:57.252 INFO [stderr]    |             |
Dec 06 14:21:57.252 INFO [stderr]    |             help: remove this `mut`
Dec 06 14:21:57.252 INFO [stderr] 
Dec 06 14:21:57.252 INFO [stderr] warning: variable does not need to be mutable
Dec 06 14:21:57.252 INFO [stderr]    --> src/lib.rs:114:9
Dec 06 14:21:57.252 INFO [stderr]     |
Dec 06 14:21:57.252 INFO [stderr] 114 |     let mut constraint: &mut Link = &mut row[dense_column_index];
Dec 06 14:21:57.252 INFO [stderr]     |         ----^^^^^^^^^^
Dec 06 14:21:57.252 INFO [stderr]     |         |
Dec 06 14:21:57.252 INFO [stderr]     |         help: remove this `mut`
Dec 06 14:21:57.252 INFO [stderr] 
Dec 06 14:21:57.296 INFO [stderr] warning: method is never used: `to_sparse`
Dec 06 14:21:57.296 INFO [stderr]   --> src/coords.rs:18:5
Dec 06 14:21:57.296 INFO [stderr]    |
Dec 06 14:21:57.296 INFO [stderr] 18 |     pub fn to_sparse(&self) -> SparseRow {
Dec 06 14:21:57.297 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:57.297 INFO [stderr]    |
Dec 06 14:21:57.297 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 06 14:21:57.297 INFO [stderr] 
Dec 06 14:21:57.297 INFO [stderr] warning: method is never used: `to_sparse`
Dec 06 14:21:57.297 INFO [stderr]    --> src/coords.rs:130:5
Dec 06 14:21:57.298 INFO [stderr]     |
Dec 06 14:21:57.298 INFO [stderr] 130 |     pub fn to_sparse(&self, row: &DenseRow) -> SparseColumn {
Dec 06 14:21:57.298 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:57.298 INFO [stderr] 
Dec 06 14:21:57.298 INFO [stderr] warning: constant item is never used: `POSSIBILITIES`
Dec 06 14:21:57.298 INFO [stderr]  --> src/matrix.rs:5:1
Dec 06 14:21:57.298 INFO [stderr]   |
Dec 06 14:21:57.299 INFO [stderr] 5 | const POSSIBILITIES: usize = 9 * 9 * 9;
Dec 06 14:21:57.299 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:57.299 INFO [stderr] 
Dec 06 14:21:57.299 INFO [stderr] warning: constant item is never used: `CONSTRAINTS`
Dec 06 14:21:57.299 INFO [stderr]  --> src/matrix.rs:9:1
Dec 06 14:21:57.299 INFO [stderr]   |
Dec 06 14:21:57.299 INFO [stderr] 9 | const CONSTRAINTS: usize = 9 * 9 + 9 * 9 + 9 * 9 + 9 * 9;
Dec 06 14:21:57.300 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:57.302 INFO [stderr] 
Dec 06 14:21:57.302 INFO [stderr] warning: constant item is never used: `NONZERO_CONSTRAINTS_PER_POSSIBILITY`
Dec 06 14:21:57.302 INFO [stderr]   --> src/matrix.rs:13:1
Dec 06 14:21:57.302 INFO [stderr]    |
Dec 06 14:21:57.302 INFO [stderr] 13 | const NONZERO_CONSTRAINTS_PER_POSSIBILITY: usize = 4;
Dec 06 14:21:57.302 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:57.302 INFO [stderr] 
Dec 06 14:21:57.302 INFO [stderr] warning: constant item is never used: `MATRIX_NODE_COUNT`
Dec 06 14:21:57.302 INFO [stderr]   --> src/matrix.rs:16:1
Dec 06 14:21:57.302 INFO [stderr]    |
Dec 06 14:21:57.302 INFO [stderr] 16 | const MATRIX_NODE_COUNT: usize = 1 + CONSTRAINTS + POSSIBILITIES * NONZERO_CONSTRAINTS_PER_POSSIBILITY;
Dec 06 14:21:57.302 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:57.302 INFO [stderr] 
Dec 06 14:21:57.302 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:21:57.302 INFO [stderr]    --> src/matrix.rs:359:13
Dec 06 14:21:57.302 INFO [stderr]     |
Dec 06 14:21:57.302 INFO [stderr] 359 |             writeln!(f, "col {:?}", self.nodes[current_header_index]);
Dec 06 14:21:57.302 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:57.302 INFO [stderr]     |
Dec 06 14:21:57.302 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 06 14:21:57.302 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:21:57.302 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 06 14:21:57.302 INFO [stderr] 
Dec 06 14:21:57.304 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:21:57.304 INFO [stderr]   --> src/board.rs:84:13
Dec 06 14:21:57.304 INFO [stderr]    |
Dec 06 14:21:57.304 INFO [stderr] 84 |             write!(to, "{} ", c);
Dec 06 14:21:57.304 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:57.304 INFO [stderr]    |
Dec 06 14:21:57.304 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:21:57.304 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 06 14:21:57.304 INFO [stderr] 
Dec 06 14:21:57.304 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:21:57.304 INFO [stderr]   --> src/board.rs:86:9
Dec 06 14:21:57.304 INFO [stderr]    |
Dec 06 14:21:57.304 INFO [stderr] 86 |         write!(to, "{}", self.entries[9*9-1]);
Dec 06 14:21:57.304 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:57.304 INFO [stderr]    |
Dec 06 14:21:57.304 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:21:57.304 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 06 14:21:57.304 INFO [stderr] 
Dec 06 14:21:57.304 INFO [stderr] warning: comparison is useless due to type limits
Dec 06 14:21:57.304 INFO [stderr]    --> src/board.rs:158:25
Dec 06 14:21:57.304 INFO [stderr]     |
Dec 06 14:21:57.304 INFO [stderr] 158 |                 assert!(value >= 0 && value <= 9);
Dec 06 14:21:57.304 INFO [stderr]     |                         ^^^^^^^^^^
Dec 06 14:21:57.304 INFO [stderr]     |
Dec 06 14:21:57.304 INFO [stderr]     = note: #[warn(unused_comparisons)] on by default
Dec 06 14:21:57.304 INFO [stderr] 
Dec 06 14:21:57.312 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:21:57.312 INFO [stderr]    --> src/board.rs:202:13
Dec 06 14:21:57.312 INFO [stderr]     |
Dec 06 14:21:57.312 INFO [stderr] 202 |             fmt_row(self, f, &mut buf, row);
Dec 06 14:21:57.312 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:57.312 INFO [stderr]     |
Dec 06 14:21:57.312 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:21:57.312 INFO [stderr] 
Dec 06 14:21:58.304 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 06 14:21:58.304 INFO [stderr]   --> src/bin/sudoku.rs:15:12
Dec 06 14:21:58.304 INFO [stderr]    |
Dec 06 14:21:58.304 INFO [stderr] 15 |         if (bytes_read == 0) {
Dec 06 14:21:58.304 INFO [stderr]    |            ^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:21:58.304 INFO [stderr]    |
Dec 06 14:21:58.304 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 06 14:21:58.304 INFO [stderr] 
Dec 06 14:21:58.348 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:21:58.348 INFO [stderr]   --> src/bin/sudoku.rs:29:13
Dec 06 14:21:58.348 INFO [stderr]    |
Dec 06 14:21:58.348 INFO [stderr] 29 |             writeln!(stdout_lock);
Dec 06 14:21:58.348 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:58.348 INFO [stderr]    |
Dec 06 14:21:58.348 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 14:21:58.348 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:21:58.348 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 06 14:21:58.348 INFO [stderr] 
Dec 06 14:21:58.348 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:21:58.348 INFO [stderr]   --> src/bin/sudoku.rs:30:13
Dec 06 14:21:58.348 INFO [stderr]    |
Dec 06 14:21:58.348 INFO [stderr] 30 |             stdout_lock.flush();
Dec 06 14:21:58.348 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^
Dec 06 14:21:58.348 INFO [stderr]    |
Dec 06 14:21:58.348 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:21:58.348 INFO [stderr] 
Dec 06 14:21:58.985 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.59s
Dec 06 14:21:58.989 INFO [stderr] su: No module specific data is present
Dec 06 14:21:59.751 INFO running `"docker" "inspect" "8559ae084ecca9c2fc09ceef9e53b49181065b9df715a8d26997a705cdba631f"`
Dec 06 14:22:00.080 INFO running `"docker" "rm" "-f" "8559ae084ecca9c2fc09ceef9e53b49181065b9df715a8d26997a705cdba631f"`
Dec 06 14:22:00.424 INFO [stdout] 8559ae084ecca9c2fc09ceef9e53b49181065b9df715a8d26997a705cdba631f
Dec 06 14:22:00.430 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 14:22:00.886 INFO [stdout] 1b90e930465566b77dd96fb2475960baba285a081a91c0bacb5a6eb1aea9cf94
Dec 06 14:22:00.888 INFO running `"docker" "start" "-a" "1b90e930465566b77dd96fb2475960baba285a081a91c0bacb5a6eb1aea9cf94"`
Dec 06 14:22:02.864 INFO [stderr] usermod: no changes
Dec 06 14:22:02.940 INFO [stderr]    Compiling sudoku v0.1.0 (/source)
Dec 06 14:22:03.764 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 06 14:22:03.764 INFO [stderr]   --> src/bin/sudoku.rs:15:12
Dec 06 14:22:03.764 INFO [stderr]    |
Dec 06 14:22:03.764 INFO [stderr] 15 |         if (bytes_read == 0) {
Dec 06 14:22:03.764 INFO [stderr]    |            ^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:22:03.764 INFO [stderr]    |
Dec 06 14:22:03.764 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 06 14:22:03.764 INFO [stderr] 
Dec 06 14:22:03.784 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:22:03.784 INFO [stderr]    --> src/matrix.rs:185:15
Dec 06 14:22:03.784 INFO [stderr]     |
Dec 06 14:22:03.784 INFO [stderr] 185 |         while (current_down_index != header_index) {
Dec 06 14:22:03.785 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:22:03.785 INFO [stderr]     |
Dec 06 14:22:03.785 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 06 14:22:03.785 INFO [stderr] 
Dec 06 14:22:03.785 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:22:03.785 INFO [stderr]    --> src/matrix.rs:191:19
Dec 06 14:22:03.785 INFO [stderr]     |
Dec 06 14:22:03.785 INFO [stderr] 191 |             while (current_right_index != current_down_index) {
Dec 06 14:22:03.785 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:22:03.785 INFO [stderr] 
Dec 06 14:22:03.785 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:22:03.785 INFO [stderr]    --> src/matrix.rs:223:15
Dec 06 14:22:03.785 INFO [stderr]     |
Dec 06 14:22:03.785 INFO [stderr] 223 |         while (current_up_index != header_index) {
Dec 06 14:22:03.785 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:22:03.785 INFO [stderr] 
Dec 06 14:22:03.785 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:22:03.785 INFO [stderr]    --> src/matrix.rs:229:19
Dec 06 14:22:03.785 INFO [stderr]     |
Dec 06 14:22:03.785 INFO [stderr] 229 |             while (current_left_index != current_up_index) {
Dec 06 14:22:03.785 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:22:03.785 INFO [stderr] 
Dec 06 14:22:03.785 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:22:03.785 INFO [stderr]    --> src/matrix.rs:307:15
Dec 06 14:22:03.785 INFO [stderr]     |
Dec 06 14:22:03.785 INFO [stderr] 307 |         while (current_down_index != min_header_index) {
Dec 06 14:22:03.785 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:22:03.785 INFO [stderr] 
Dec 06 14:22:03.785 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:22:03.785 INFO [stderr]    --> src/matrix.rs:313:19
Dec 06 14:22:03.785 INFO [stderr]     |
Dec 06 14:22:03.785 INFO [stderr] 313 |             while (current_right_index != current_down_index) {
Dec 06 14:22:03.785 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:22:03.785 INFO [stderr] 
Dec 06 14:22:03.785 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:22:03.785 INFO [stderr]    --> src/matrix.rs:332:19
Dec 06 14:22:03.785 INFO [stderr]     |
Dec 06 14:22:03.785 INFO [stderr] 332 |             while (current_left_index != current_down_index) {
Dec 06 14:22:03.785 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:22:03.785 INFO [stderr] 
Dec 06 14:22:03.785 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 06 14:22:03.785 INFO [stderr]    --> src/matrix.rs:358:15
Dec 06 14:22:03.785 INFO [stderr]     |
Dec 06 14:22:03.785 INFO [stderr] 358 |         while (current_header_index != Matrix::ROOT_INDEX) {
Dec 06 14:22:03.785 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:22:03.785 INFO [stderr] 
Dec 06 14:22:03.785 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 06 14:22:03.785 INFO [stderr]    --> src/matrix.rs:376:24
Dec 06 14:22:03.785 INFO [stderr]     |
Dec 06 14:22:03.785 INFO [stderr] 376 |                     if (current_index == row_front_index) {
Dec 06 14:22:03.785 INFO [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 14:22:03.785 INFO [stderr] 
Dec 06 14:22:03.785 INFO [stderr] warning: unused imports: `NodeKind`, `Node`
Dec 06 14:22:03.785 INFO [stderr]    --> src/matrix.rs:389:25
Dec 06 14:22:03.785 INFO [stderr]     |
Dec 06 14:22:03.785 INFO [stderr] 389 |     use super::{Matrix, Node, NodeKind};
Dec 06 14:22:03.785 INFO [stderr]     |                         ^^^^  ^^^^^^^^
Dec 06 14:22:03.785 INFO [stderr]     |
Dec 06 14:22:03.785 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 06 14:22:03.785 INFO [stderr] 
Dec 06 14:22:03.792 INFO [stderr] warning: unused imports: `Debug`, `Display`, `Formatter`, `Write`
Dec 06 14:22:03.792 INFO [stderr]  --> src/lib.rs:5:16
Dec 06 14:22:03.792 INFO [stderr]   |
Dec 06 14:22:03.792 INFO [stderr] 5 | use std::fmt::{Display, Write, Formatter, Debug};
Dec 06 14:22:03.792 INFO [stderr]   |                ^^^^^^^  ^^^^^  ^^^^^^^^^  ^^^^^
Dec 06 14:22:03.792 INFO [stderr] 
Dec 06 14:22:03.792 INFO [stderr] warning: unused import: `std::str::FromStr`
Dec 06 14:22:03.792 INFO [stderr]  --> src/lib.rs:6:5
Dec 06 14:22:03.792 INFO [stderr]   |
Dec 06 14:22:03.792 INFO [stderr] 6 | use std::str::FromStr;
Dec 06 14:22:03.792 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 06 14:22:03.792 INFO [stderr] 
Dec 06 14:22:03.792 INFO [stderr] warning: unused import: `matrix::*`
Dec 06 14:22:03.792 INFO [stderr]  --> src/lib.rs:9:5
Dec 06 14:22:03.792 INFO [stderr]   |
Dec 06 14:22:03.792 INFO [stderr] 9 | use matrix::*;
Dec 06 14:22:03.792 INFO [stderr]   |     ^^^^^^^^^
Dec 06 14:22:03.792 INFO [stderr] 
Dec 06 14:22:03.831 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:22:03.831 INFO [stderr]   --> src/bin/sudoku.rs:29:13
Dec 06 14:22:03.831 INFO [stderr]    |
Dec 06 14:22:03.831 INFO [stderr] 29 |             writeln!(stdout_lock);
Dec 06 14:22:03.831 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:03.831 INFO [stderr]    |
Dec 06 14:22:03.831 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 14:22:03.832 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:22:03.832 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 06 14:22:03.832 INFO [stderr] 
Dec 06 14:22:03.832 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:22:03.832 INFO [stderr]   --> src/bin/sudoku.rs:30:13
Dec 06 14:22:03.832 INFO [stderr]    |
Dec 06 14:22:03.832 INFO [stderr] 30 |             stdout_lock.flush();
Dec 06 14:22:03.832 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:03.832 INFO [stderr]    |
Dec 06 14:22:03.832 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:22:03.832 INFO [stderr] 
Dec 06 14:22:04.488 INFO [stderr] warning: unused variable: `i`
Dec 06 14:22:04.488 INFO [stderr]    --> src/board.rs:211:13
Dec 06 14:22:04.488 INFO [stderr]     |
Dec 06 14:22:04.488 INFO [stderr] 211 |         let i = col + row * 9;
Dec 06 14:22:04.488 INFO [stderr]     |             ^ help: consider using `_i` instead
Dec 06 14:22:04.488 INFO [stderr]     |
Dec 06 14:22:04.488 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 06 14:22:04.488 INFO [stderr] 
Dec 06 14:22:04.488 INFO [stderr] warning: unused variable: `dense_row_index`
Dec 06 14:22:04.488 INFO [stderr]    --> src/coords.rs:276:17
Dec 06 14:22:04.488 INFO [stderr]     |
Dec 06 14:22:04.488 INFO [stderr] 276 |             for dense_row_index in 0..9*9*9 {
Dec 06 14:22:04.488 INFO [stderr]     |                 ^^^^^^^^^^^^^^^ help: consider using `_dense_row_index` instead
Dec 06 14:22:04.488 INFO [stderr] 
Dec 06 14:22:04.489 INFO [stderr] warning: unused variable: `column`
Dec 06 14:22:04.489 INFO [stderr]    --> src/coords.rs:119:28
Dec 06 14:22:04.489 INFO [stderr]     |
Dec 06 14:22:04.489 INFO [stderr] 119 |     pub fn to_dense(&self, column: &SparseColumn) -> DenseRow {
Dec 06 14:22:04.489 INFO [stderr]     |                            ^^^^^^ help: consider using `_column` instead
Dec 06 14:22:04.489 INFO [stderr] 
Dec 06 14:22:04.489 INFO [stderr] warning: unused variable: `sparse_row`
Dec 06 14:22:04.489 INFO [stderr]   --> src/lib.rs:95:17
Dec 06 14:22:04.489 INFO [stderr]    |
Dec 06 14:22:04.489 INFO [stderr] 95 |             let sparse_row = SparseRow::new(row_index);
Dec 06 14:22:04.489 INFO [stderr]    |                 ^^^^^^^^^^ help: consider using `_sparse_row` instead
Dec 06 14:22:04.489 INFO [stderr] 
Dec 06 14:22:04.489 INFO [stderr] warning: unused variable: `board`
Dec 06 14:22:04.489 INFO [stderr]    --> src/lib.rs:123:25
Dec 06 14:22:04.489 INFO [stderr]     |
Dec 06 14:22:04.489 INFO [stderr] 123 |     fn solve(&mut self, board: &mut Board) -> Result<(), ()> {
Dec 06 14:22:04.489 INFO [stderr]     |                         ^^^^^ help: consider using `_board` instead
Dec 06 14:22:04.489 INFO [stderr] 
Dec 06 14:22:04.500 INFO [stderr] warning: variable does not need to be mutable
Dec 06 14:22:04.500 INFO [stderr]   --> src/lib.rs:65:13
Dec 06 14:22:04.500 INFO [stderr]    |
Dec 06 14:22:04.500 INFO [stderr] 65 |         let mut matrix = [[Link::default(); NONZERO_CONSTRAINTS_PER_POSSIBILITY]; POSSIBILITIES];
Dec 06 14:22:04.500 INFO [stderr]    |             ----^^^^^^
Dec 06 14:22:04.500 INFO [stderr]    |             |
Dec 06 14:22:04.500 INFO [stderr]    |             help: remove this `mut`
Dec 06 14:22:04.500 INFO [stderr]    |
Dec 06 14:22:04.500 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 14:22:04.500 INFO [stderr] 
Dec 06 14:22:04.500 INFO [stderr] warning: variable does not need to be mutable
Dec 06 14:22:04.500 INFO [stderr]   --> src/lib.rs:66:13
Dec 06 14:22:04.500 INFO [stderr]    |
Dec 06 14:22:04.500 INFO [stderr] 66 |         let mut headers = [Header::default(); CONSTRAINTS];
Dec 06 14:22:04.500 INFO [stderr]    |             ----^^^^^^^
Dec 06 14:22:04.500 INFO [stderr]    |             |
Dec 06 14:22:04.500 INFO [stderr]    |             help: remove this `mut`
Dec 06 14:22:04.500 INFO [stderr] 
Dec 06 14:22:04.501 INFO [stderr] warning: variable does not need to be mutable
Dec 06 14:22:04.501 INFO [stderr]    --> src/lib.rs:114:9
Dec 06 14:22:04.501 INFO [stderr]     |
Dec 06 14:22:04.501 INFO [stderr] 114 |     let mut constraint: &mut Link = &mut row[dense_column_index];
Dec 06 14:22:04.501 INFO [stderr]     |         ----^^^^^^^^^^
Dec 06 14:22:04.501 INFO [stderr]     |         |
Dec 06 14:22:04.501 INFO [stderr]     |         help: remove this `mut`
Dec 06 14:22:04.501 INFO [stderr] 
Dec 06 14:22:04.625 INFO [stderr] warning: method is never used: `to_sparse`
Dec 06 14:22:04.625 INFO [stderr]   --> src/coords.rs:18:5
Dec 06 14:22:04.625 INFO [stderr]    |
Dec 06 14:22:04.625 INFO [stderr] 18 |     pub fn to_sparse(&self) -> SparseRow {
Dec 06 14:22:04.625 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:04.625 INFO [stderr]    |
Dec 06 14:22:04.625 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 06 14:22:04.625 INFO [stderr] 
Dec 06 14:22:04.625 INFO [stderr] warning: constant item is never used: `POSSIBILITIES`
Dec 06 14:22:04.625 INFO [stderr]  --> src/matrix.rs:5:1
Dec 06 14:22:04.625 INFO [stderr]   |
Dec 06 14:22:04.625 INFO [stderr] 5 | const POSSIBILITIES: usize = 9 * 9 * 9;
Dec 06 14:22:04.625 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:04.625 INFO [stderr] 
Dec 06 14:22:04.625 INFO [stderr] warning: constant item is never used: `CONSTRAINTS`
Dec 06 14:22:04.625 INFO [stderr]  --> src/matrix.rs:9:1
Dec 06 14:22:04.625 INFO [stderr]   |
Dec 06 14:22:04.625 INFO [stderr] 9 | const CONSTRAINTS: usize = 9 * 9 + 9 * 9 + 9 * 9 + 9 * 9;
Dec 06 14:22:04.625 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:04.625 INFO [stderr] 
Dec 06 14:22:04.625 INFO [stderr] warning: constant item is never used: `NONZERO_CONSTRAINTS_PER_POSSIBILITY`
Dec 06 14:22:04.625 INFO [stderr]   --> src/matrix.rs:13:1
Dec 06 14:22:04.625 INFO [stderr]    |
Dec 06 14:22:04.625 INFO [stderr] 13 | const NONZERO_CONSTRAINTS_PER_POSSIBILITY: usize = 4;
Dec 06 14:22:04.625 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:04.625 INFO [stderr] 
Dec 06 14:22:04.625 INFO [stderr] warning: constant item is never used: `MATRIX_NODE_COUNT`
Dec 06 14:22:04.625 INFO [stderr]   --> src/matrix.rs:16:1
Dec 06 14:22:04.625 INFO [stderr]    |
Dec 06 14:22:04.625 INFO [stderr] 16 | const MATRIX_NODE_COUNT: usize = 1 + CONSTRAINTS + POSSIBILITIES * NONZERO_CONSTRAINTS_PER_POSSIBILITY;
Dec 06 14:22:04.625 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:04.625 INFO [stderr] 
Dec 06 14:22:04.630 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:22:04.630 INFO [stderr]    --> src/matrix.rs:359:13
Dec 06 14:22:04.630 INFO [stderr]     |
Dec 06 14:22:04.630 INFO [stderr] 359 |             writeln!(f, "col {:?}", self.nodes[current_header_index]);
Dec 06 14:22:04.630 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:04.630 INFO [stderr]     |
Dec 06 14:22:04.630 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 06 14:22:04.630 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:22:04.630 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 06 14:22:04.630 INFO [stderr] 
Dec 06 14:22:04.636 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:22:04.636 INFO [stderr]   --> src/board.rs:84:13
Dec 06 14:22:04.636 INFO [stderr]    |
Dec 06 14:22:04.636 INFO [stderr] 84 |             write!(to, "{} ", c);
Dec 06 14:22:04.636 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:04.636 INFO [stderr]    |
Dec 06 14:22:04.636 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:22:04.636 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 06 14:22:04.636 INFO [stderr] 
Dec 06 14:22:04.636 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:22:04.636 INFO [stderr]   --> src/board.rs:86:9
Dec 06 14:22:04.636 INFO [stderr]    |
Dec 06 14:22:04.636 INFO [stderr] 86 |         write!(to, "{}", self.entries[9*9-1]);
Dec 06 14:22:04.636 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:04.636 INFO [stderr]    |
Dec 06 14:22:04.636 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:22:04.636 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 06 14:22:04.636 INFO [stderr] 
Dec 06 14:22:04.636 INFO [stderr] warning: comparison is useless due to type limits
Dec 06 14:22:04.636 INFO [stderr]    --> src/board.rs:158:25
Dec 06 14:22:04.636 INFO [stderr]     |
Dec 06 14:22:04.637 INFO [stderr] 158 |                 assert!(value >= 0 && value <= 9);
Dec 06 14:22:04.637 INFO [stderr]     |                         ^^^^^^^^^^
Dec 06 14:22:04.637 INFO [stderr]     |
Dec 06 14:22:04.637 INFO [stderr]     = note: #[warn(unused_comparisons)] on by default
Dec 06 14:22:04.637 INFO [stderr] 
Dec 06 14:22:04.637 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 14:22:04.637 INFO [stderr]    --> src/board.rs:202:13
Dec 06 14:22:04.637 INFO [stderr]     |
Dec 06 14:22:04.637 INFO [stderr] 202 |             fmt_row(self, f, &mut buf, row);
Dec 06 14:22:04.637 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 14:22:04.637 INFO [stderr]     |
Dec 06 14:22:04.637 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 14:22:04.637 INFO [stderr] 
Dec 06 14:22:05.508 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.61s
Dec 06 14:22:05.508 INFO [stderr] su: No module specific data is present
Dec 06 14:22:06.708 INFO running `"docker" "inspect" "1b90e930465566b77dd96fb2475960baba285a081a91c0bacb5a6eb1aea9cf94"`
Dec 06 14:22:06.920 INFO running `"docker" "rm" "-f" "1b90e930465566b77dd96fb2475960baba285a081a91c0bacb5a6eb1aea9cf94"`
Dec 06 14:22:07.294 INFO [stdout] 1b90e930465566b77dd96fb2475960baba285a081a91c0bacb5a6eb1aea9cf94
Dec 06 14:22:07.300 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 14:22:07.810 INFO [stdout] d81c1ccebb796b5fade5c1ec40d9d40cbe78b674201baf6fca65258889c2ce8e
Dec 06 14:22:07.812 INFO running `"docker" "start" "-a" "d81c1ccebb796b5fade5c1ec40d9d40cbe78b674201baf6fca65258889c2ce8e"`
Dec 06 14:22:09.463 INFO [stderr] usermod: no changes
Dec 06 14:22:09.523 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Dec 06 14:22:09.523 INFO [stderr]      Running /target/debug/deps/sudoku-5eb36026cfd3cd63
Dec 06 14:22:09.572 INFO [stdout] 
Dec 06 14:22:09.572 INFO [stdout] running 18 tests
Dec 06 14:22:09.576 INFO [stdout] test board::tests::possibility_get_matrix_column_box ... ok
Dec 06 14:22:09.596 INFO [stdout] test board::tests::possibility_get_matrix_column_cell ... ok
Dec 06 14:22:09.596 INFO [stdout] test board::tests::possibility_get_matrix_row ... ok
Dec 06 14:22:09.596 INFO [stdout] test board::tests::possibility_get_matrix_column_column ... ok
Dec 06 14:22:09.596 INFO [stdout] test board::tests::possibility_from_matrix_row_consistent_with_get_matrix_row ... ok
Dec 06 14:22:09.596 INFO [stdout] test board::tests::board_from_singleline_str ... ok
Dec 06 14:22:09.596 INFO [stdout] test board::tests::possibility_get_matrix_column_row ... ok
Dec 06 14:22:09.596 INFO [stdout] test board::tests::board_from_multiline_str ... ok
Dec 06 14:22:09.596 INFO [stdout] test board::tests::singleline_and_multiline_board_equivalency ... ok
Dec 06 14:22:09.616 INFO [stdout] test coords::tests::first_row ... ok
Dec 06 14:22:09.616 INFO [stderr]      Running /target/debug/deps/sudoku-4e143b46a8704a80
Dec 06 14:22:09.616 INFO [stdout] test coords::tests::dense_column_to_sparse ... ok
Dec 06 14:22:09.616 INFO [stdout] test coords::tests::natural_down ... ok
Dec 06 14:22:09.616 INFO [stdout] test coords::tests::natural_right ... ok
Dec 06 14:22:09.616 INFO [stdout] test coords::tests::natural_up ... ok
Dec 06 14:22:09.616 INFO [stdout] test coords::tests::natural_left ... ok
Dec 06 14:22:09.616 INFO [stdout] test coords::tests::natural_left_right_reflexive ... ok
Dec 06 14:22:09.616 INFO [stdout] test matrix::tests::new_matrix ... ok
Dec 06 14:22:09.616 INFO [stdout] test coords::tests::natural_up_down_reflexive ... ok
Dec 06 14:22:09.616 INFO [stdout] 
Dec 06 14:22:09.616 INFO [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 14:22:09.616 INFO [stdout] 
Dec 06 14:22:09.632 INFO [stdout] 
Dec 06 14:22:09.632 INFO [stderr]    Doc-tests sudoku
Dec 06 14:22:09.632 INFO [stdout] running 0 tests
Dec 06 14:22:09.632 INFO [stdout] 
Dec 06 14:22:09.632 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 14:22:09.632 INFO [stdout] 
Dec 06 14:22:10.456 INFO [stdout] 
Dec 06 14:22:10.456 INFO [stdout] running 0 tests
Dec 06 14:22:10.456 INFO [stdout] 
Dec 06 14:22:10.456 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 14:22:10.456 INFO [stdout] 
Dec 06 14:22:10.464 INFO [stderr] su: No module specific data is present
Dec 06 14:22:11.124 INFO running `"docker" "inspect" "d81c1ccebb796b5fade5c1ec40d9d40cbe78b674201baf6fca65258889c2ce8e"`
Dec 06 14:22:11.418 INFO running `"docker" "rm" "-f" "d81c1ccebb796b5fade5c1ec40d9d40cbe78b674201baf6fca65258889c2ce8e"`
Dec 06 14:22:11.824 INFO [stdout] d81c1ccebb796b5fade5c1ec40d9d40cbe78b674201baf6fca65258889c2ce8e