Dec 14 10:43:13.972 INFO testing EkardNT/sudoku against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 10:43:13.972 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14 10:43:14.393 INFO [stdout] e8a722b5cf9e209717d369fc465000e8a3ba9bfe40f9afacf4d67388521e07aa
Dec 14 10:43:14.396 INFO running `"docker" "start" "-a" "e8a722b5cf9e209717d369fc465000e8a3ba9bfe40f9afacf4d67388521e07aa"`
Dec 14 10:43:15.889 INFO [stderr] usermod: no changes
Dec 14 10:43:15.946 INFO [stderr]    Compiling sudoku v0.1.0 (/source)
Dec 14 10:43:16.527 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:16.527 INFO [stderr]    --> src/matrix.rs:185:15
Dec 14 10:43:16.527 INFO [stderr]     |
Dec 14 10:43:16.527 INFO [stderr] 185 |         while (current_down_index != header_index) {
Dec 14 10:43:16.527 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:16.527 INFO [stderr]     |
Dec 14 10:43:16.527 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 14 10:43:16.527 INFO [stderr] 
Dec 14 10:43:16.527 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:16.527 INFO [stderr]    --> src/matrix.rs:191:19
Dec 14 10:43:16.527 INFO [stderr]     |
Dec 14 10:43:16.527 INFO [stderr] 191 |             while (current_right_index != current_down_index) {
Dec 14 10:43:16.527 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:16.527 INFO [stderr] 
Dec 14 10:43:16.527 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:16.527 INFO [stderr]    --> src/matrix.rs:223:15
Dec 14 10:43:16.527 INFO [stderr]     |
Dec 14 10:43:16.527 INFO [stderr] 223 |         while (current_up_index != header_index) {
Dec 14 10:43:16.527 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:16.527 INFO [stderr] 
Dec 14 10:43:16.527 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:16.527 INFO [stderr]    --> src/matrix.rs:229:19
Dec 14 10:43:16.527 INFO [stderr]     |
Dec 14 10:43:16.527 INFO [stderr] 229 |             while (current_left_index != current_up_index) {
Dec 14 10:43:16.527 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:16.527 INFO [stderr] 
Dec 14 10:43:16.527 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:16.527 INFO [stderr]    --> src/matrix.rs:307:15
Dec 14 10:43:16.527 INFO [stderr]     |
Dec 14 10:43:16.527 INFO [stderr] 307 |         while (current_down_index != min_header_index) {
Dec 14 10:43:16.527 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:16.527 INFO [stderr] 
Dec 14 10:43:16.527 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:16.527 INFO [stderr]    --> src/matrix.rs:313:19
Dec 14 10:43:16.527 INFO [stderr]     |
Dec 14 10:43:16.527 INFO [stderr] 313 |             while (current_right_index != current_down_index) {
Dec 14 10:43:16.527 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:16.527 INFO [stderr] 
Dec 14 10:43:16.527 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:16.528 INFO [stderr]    --> src/matrix.rs:332:19
Dec 14 10:43:16.528 INFO [stderr]     |
Dec 14 10:43:16.528 INFO [stderr] 332 |             while (current_left_index != current_down_index) {
Dec 14 10:43:16.528 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:16.528 INFO [stderr] 
Dec 14 10:43:16.528 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:16.528 INFO [stderr]    --> src/matrix.rs:358:15
Dec 14 10:43:16.528 INFO [stderr]     |
Dec 14 10:43:16.528 INFO [stderr] 358 |         while (current_header_index != Matrix::ROOT_INDEX) {
Dec 14 10:43:16.528 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:16.528 INFO [stderr] 
Dec 14 10:43:16.528 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 14 10:43:16.528 INFO [stderr]    --> src/matrix.rs:376:24
Dec 14 10:43:16.528 INFO [stderr]     |
Dec 14 10:43:16.528 INFO [stderr] 376 |                     if (current_index == row_front_index) {
Dec 14 10:43:16.528 INFO [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:16.528 INFO [stderr] 
Dec 14 10:43:16.528 INFO [stderr] warning: unused imports: `Debug`, `Display`, `Formatter`, `Write`
Dec 14 10:43:16.528 INFO [stderr]  --> src/lib.rs:5:16
Dec 14 10:43:16.528 INFO [stderr]   |
Dec 14 10:43:16.528 INFO [stderr] 5 | use std::fmt::{Display, Write, Formatter, Debug};
Dec 14 10:43:16.528 INFO [stderr]   |                ^^^^^^^  ^^^^^  ^^^^^^^^^  ^^^^^
Dec 14 10:43:16.528 INFO [stderr]   |
Dec 14 10:43:16.528 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 14 10:43:16.528 INFO [stderr] 
Dec 14 10:43:16.528 INFO [stderr] warning: unused import: `std::str::FromStr`
Dec 14 10:43:16.528 INFO [stderr]  --> src/lib.rs:6:5
Dec 14 10:43:16.528 INFO [stderr]   |
Dec 14 10:43:16.528 INFO [stderr] 6 | use std::str::FromStr;
Dec 14 10:43:16.528 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 14 10:43:16.528 INFO [stderr] 
Dec 14 10:43:16.528 INFO [stderr] warning: unused import: `matrix::*`
Dec 14 10:43:16.528 INFO [stderr]  --> src/lib.rs:9:5
Dec 14 10:43:16.528 INFO [stderr]   |
Dec 14 10:43:16.528 INFO [stderr] 9 | use matrix::*;
Dec 14 10:43:16.528 INFO [stderr]   |     ^^^^^^^^^
Dec 14 10:43:16.528 INFO [stderr] 
Dec 14 10:43:16.751 INFO [stderr] warning: unused variable: `i`
Dec 14 10:43:16.751 INFO [stderr]    --> src/board.rs:211:13
Dec 14 10:43:16.751 INFO [stderr]     |
Dec 14 10:43:16.751 INFO [stderr] 211 |         let i = col + row * 9;
Dec 14 10:43:16.751 INFO [stderr]     |             ^ help: consider using `_i` instead
Dec 14 10:43:16.751 INFO [stderr]     |
Dec 14 10:43:16.751 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 14 10:43:16.751 INFO [stderr] 
Dec 14 10:43:16.751 INFO [stderr] warning: unused variable: `column`
Dec 14 10:43:16.751 INFO [stderr]    --> src/coords.rs:119:28
Dec 14 10:43:16.751 INFO [stderr]     |
Dec 14 10:43:16.751 INFO [stderr] 119 |     pub fn to_dense(&self, column: &SparseColumn) -> DenseRow {
Dec 14 10:43:16.751 INFO [stderr]     |                            ^^^^^^ help: consider using `_column` instead
Dec 14 10:43:16.751 INFO [stderr] 
Dec 14 10:43:16.751 INFO [stderr] warning: unused variable: `sparse_row`
Dec 14 10:43:16.751 INFO [stderr]   --> src/lib.rs:95:17
Dec 14 10:43:16.751 INFO [stderr]    |
Dec 14 10:43:16.751 INFO [stderr] 95 |             let sparse_row = SparseRow::new(row_index);
Dec 14 10:43:16.751 INFO [stderr]    |                 ^^^^^^^^^^ help: consider using `_sparse_row` instead
Dec 14 10:43:16.751 INFO [stderr] 
Dec 14 10:43:16.751 INFO [stderr] warning: unused variable: `board`
Dec 14 10:43:16.751 INFO [stderr]    --> src/lib.rs:123:25
Dec 14 10:43:16.751 INFO [stderr]     |
Dec 14 10:43:16.751 INFO [stderr] 123 |     fn solve(&mut self, board: &mut Board) -> Result<(), ()> {
Dec 14 10:43:16.751 INFO [stderr]     |                         ^^^^^ help: consider using `_board` instead
Dec 14 10:43:16.751 INFO [stderr] 
Dec 14 10:43:16.751 INFO [stderr] warning: variable does not need to be mutable
Dec 14 10:43:16.751 INFO [stderr]   --> src/lib.rs:65:13
Dec 14 10:43:16.751 INFO [stderr]    |
Dec 14 10:43:16.751 INFO [stderr] 65 |         let mut matrix = [[Link::default(); NONZERO_CONSTRAINTS_PER_POSSIBILITY]; POSSIBILITIES];
Dec 14 10:43:16.751 INFO [stderr]    |             ----^^^^^^
Dec 14 10:43:16.751 INFO [stderr]    |             |
Dec 14 10:43:16.751 INFO [stderr]    |             help: remove this `mut`
Dec 14 10:43:16.751 INFO [stderr]    |
Dec 14 10:43:16.751 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 10:43:16.751 INFO [stderr] 
Dec 14 10:43:16.751 INFO [stderr] warning: variable does not need to be mutable
Dec 14 10:43:16.751 INFO [stderr]   --> src/lib.rs:66:13
Dec 14 10:43:16.751 INFO [stderr]    |
Dec 14 10:43:16.751 INFO [stderr] 66 |         let mut headers = [Header::default(); CONSTRAINTS];
Dec 14 10:43:16.751 INFO [stderr]    |             ----^^^^^^^
Dec 14 10:43:16.751 INFO [stderr]    |             |
Dec 14 10:43:16.751 INFO [stderr]    |             help: remove this `mut`
Dec 14 10:43:16.751 INFO [stderr] 
Dec 14 10:43:16.759 INFO [stderr] warning: variable does not need to be mutable
Dec 14 10:43:16.759 INFO [stderr]    --> src/lib.rs:114:9
Dec 14 10:43:16.759 INFO [stderr]     |
Dec 14 10:43:16.759 INFO [stderr] 114 |     let mut constraint: &mut Link = &mut row[dense_column_index];
Dec 14 10:43:16.759 INFO [stderr]     |         ----^^^^^^^^^^
Dec 14 10:43:16.759 INFO [stderr]     |         |
Dec 14 10:43:16.759 INFO [stderr]     |         help: remove this `mut`
Dec 14 10:43:16.759 INFO [stderr] 
Dec 14 10:43:16.823 INFO [stderr] warning: method is never used: `to_sparse`
Dec 14 10:43:16.823 INFO [stderr]   --> src/coords.rs:18:5
Dec 14 10:43:16.823 INFO [stderr]    |
Dec 14 10:43:16.823 INFO [stderr] 18 |     pub fn to_sparse(&self) -> SparseRow {
Dec 14 10:43:16.823 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:16.823 INFO [stderr]    |
Dec 14 10:43:16.823 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 14 10:43:16.823 INFO [stderr] 
Dec 14 10:43:16.823 INFO [stderr] warning: method is never used: `to_sparse`
Dec 14 10:43:16.823 INFO [stderr]    --> src/coords.rs:130:5
Dec 14 10:43:16.823 INFO [stderr]     |
Dec 14 10:43:16.823 INFO [stderr] 130 |     pub fn to_sparse(&self, row: &DenseRow) -> SparseColumn {
Dec 14 10:43:16.823 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:16.823 INFO [stderr] 
Dec 14 10:43:16.823 INFO [stderr] warning: constant item is never used: `POSSIBILITIES`
Dec 14 10:43:16.823 INFO [stderr]  --> src/matrix.rs:5:1
Dec 14 10:43:16.823 INFO [stderr]   |
Dec 14 10:43:16.823 INFO [stderr] 5 | const POSSIBILITIES: usize = 9 * 9 * 9;
Dec 14 10:43:16.823 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:16.823 INFO [stderr] 
Dec 14 10:43:16.823 INFO [stderr] warning: constant item is never used: `CONSTRAINTS`
Dec 14 10:43:16.823 INFO [stderr]  --> src/matrix.rs:9:1
Dec 14 10:43:16.823 INFO [stderr]   |
Dec 14 10:43:16.823 INFO [stderr] 9 | const CONSTRAINTS: usize = 9 * 9 + 9 * 9 + 9 * 9 + 9 * 9;
Dec 14 10:43:16.823 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:16.823 INFO [stderr] 
Dec 14 10:43:16.823 INFO [stderr] warning: constant item is never used: `NONZERO_CONSTRAINTS_PER_POSSIBILITY`
Dec 14 10:43:16.823 INFO [stderr]   --> src/matrix.rs:13:1
Dec 14 10:43:16.823 INFO [stderr]    |
Dec 14 10:43:16.823 INFO [stderr] 13 | const NONZERO_CONSTRAINTS_PER_POSSIBILITY: usize = 4;
Dec 14 10:43:16.823 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:16.823 INFO [stderr] 
Dec 14 10:43:16.823 INFO [stderr] warning: constant item is never used: `MATRIX_NODE_COUNT`
Dec 14 10:43:16.823 INFO [stderr]   --> src/matrix.rs:16:1
Dec 14 10:43:16.823 INFO [stderr]    |
Dec 14 10:43:16.823 INFO [stderr] 16 | const MATRIX_NODE_COUNT: usize = 1 + CONSTRAINTS + POSSIBILITIES * NONZERO_CONSTRAINTS_PER_POSSIBILITY;
Dec 14 10:43:16.823 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:16.823 INFO [stderr] 
Dec 14 10:43:16.823 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:16.823 INFO [stderr]    --> src/matrix.rs:359:13
Dec 14 10:43:16.823 INFO [stderr]     |
Dec 14 10:43:16.823 INFO [stderr] 359 |             writeln!(f, "col {:?}", self.nodes[current_header_index]);
Dec 14 10:43:16.823 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:16.823 INFO [stderr]     |
Dec 14 10:43:16.823 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 14 10:43:16.823 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:16.823 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 14 10:43:16.823 INFO [stderr] 
Dec 14 10:43:16.831 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:16.831 INFO [stderr]   --> src/board.rs:84:13
Dec 14 10:43:16.831 INFO [stderr]    |
Dec 14 10:43:16.831 INFO [stderr] 84 |             write!(to, "{} ", c);
Dec 14 10:43:16.831 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:16.831 INFO [stderr]    |
Dec 14 10:43:16.831 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:16.831 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 14 10:43:16.831 INFO [stderr] 
Dec 14 10:43:16.831 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:16.831 INFO [stderr]   --> src/board.rs:86:9
Dec 14 10:43:16.831 INFO [stderr]    |
Dec 14 10:43:16.831 INFO [stderr] 86 |         write!(to, "{}", self.entries[9*9-1]);
Dec 14 10:43:16.831 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:16.831 INFO [stderr]    |
Dec 14 10:43:16.831 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:16.831 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 14 10:43:16.831 INFO [stderr] 
Dec 14 10:43:16.831 INFO [stderr] warning: comparison is useless due to type limits
Dec 14 10:43:16.831 INFO [stderr]    --> src/board.rs:158:25
Dec 14 10:43:16.831 INFO [stderr]     |
Dec 14 10:43:16.831 INFO [stderr] 158 |                 assert!(value >= 0 && value <= 9);
Dec 14 10:43:16.831 INFO [stderr]     |                         ^^^^^^^^^^
Dec 14 10:43:16.831 INFO [stderr]     |
Dec 14 10:43:16.831 INFO [stderr]     = note: #[warn(unused_comparisons)] on by default
Dec 14 10:43:16.831 INFO [stderr] 
Dec 14 10:43:16.831 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:16.831 INFO [stderr]    --> src/board.rs:202:13
Dec 14 10:43:16.831 INFO [stderr]     |
Dec 14 10:43:16.831 INFO [stderr] 202 |             fmt_row(self, f, &mut buf, row);
Dec 14 10:43:16.831 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:16.831 INFO [stderr]     |
Dec 14 10:43:16.831 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:16.831 INFO [stderr] 
Dec 14 10:43:17.927 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 14 10:43:17.927 INFO [stderr]   --> src/bin/sudoku.rs:15:12
Dec 14 10:43:17.927 INFO [stderr]    |
Dec 14 10:43:17.927 INFO [stderr] 15 |         if (bytes_read == 0) {
Dec 14 10:43:17.927 INFO [stderr]    |            ^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:17.927 INFO [stderr]    |
Dec 14 10:43:17.927 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 14 10:43:17.927 INFO [stderr] 
Dec 14 10:43:17.967 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:17.967 INFO [stderr]   --> src/bin/sudoku.rs:29:13
Dec 14 10:43:17.967 INFO [stderr]    |
Dec 14 10:43:17.967 INFO [stderr] 29 |             writeln!(stdout_lock);
Dec 14 10:43:17.967 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:17.967 INFO [stderr]    |
Dec 14 10:43:17.967 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 10:43:17.967 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:17.967 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 14 10:43:17.967 INFO [stderr] 
Dec 14 10:43:17.967 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:17.967 INFO [stderr]   --> src/bin/sudoku.rs:30:13
Dec 14 10:43:17.967 INFO [stderr]    |
Dec 14 10:43:17.967 INFO [stderr] 30 |             stdout_lock.flush();
Dec 14 10:43:17.967 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:17.967 INFO [stderr]    |
Dec 14 10:43:17.967 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:17.967 INFO [stderr] 
Dec 14 10:43:18.603 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.68s
Dec 14 10:43:18.603 INFO [stderr] su: No module specific data is present
Dec 14 10:43:19.479 INFO running `"docker" "inspect" "e8a722b5cf9e209717d369fc465000e8a3ba9bfe40f9afacf4d67388521e07aa"`
Dec 14 10:43:19.769 INFO running `"docker" "rm" "-f" "e8a722b5cf9e209717d369fc465000e8a3ba9bfe40f9afacf4d67388521e07aa"`
Dec 14 10:43:20.107 INFO [stdout] e8a722b5cf9e209717d369fc465000e8a3ba9bfe40f9afacf4d67388521e07aa
Dec 14 10:43:20.112 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14 10:43:20.644 INFO [stdout] 1776f9fbc6a405e8233644400758ec5aa0fa222fc6ff97df615260f25a8fc169
Dec 14 10:43:20.646 INFO running `"docker" "start" "-a" "1776f9fbc6a405e8233644400758ec5aa0fa222fc6ff97df615260f25a8fc169"`
Dec 14 10:43:22.679 INFO [stderr] usermod: no changes
Dec 14 10:43:22.743 INFO [stderr]    Compiling sudoku v0.1.0 (/source)
Dec 14 10:43:23.487 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 14 10:43:23.487 INFO [stderr]   --> src/bin/sudoku.rs:15:12
Dec 14 10:43:23.487 INFO [stderr]    |
Dec 14 10:43:23.487 INFO [stderr] 15 |         if (bytes_read == 0) {
Dec 14 10:43:23.487 INFO [stderr]    |            ^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:23.487 INFO [stderr]    |
Dec 14 10:43:23.487 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 14 10:43:23.487 INFO [stderr] 
Dec 14 10:43:23.559 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:23.559 INFO [stderr]   --> src/bin/sudoku.rs:29:13
Dec 14 10:43:23.559 INFO [stderr]    |
Dec 14 10:43:23.559 INFO [stderr] 29 |             writeln!(stdout_lock);
Dec 14 10:43:23.559 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:23.559 INFO [stderr]    |
Dec 14 10:43:23.559 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 10:43:23.559 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:23.559 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 14 10:43:23.559 INFO [stderr] 
Dec 14 10:43:23.559 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:23.559 INFO [stderr]   --> src/bin/sudoku.rs:30:13
Dec 14 10:43:23.559 INFO [stderr]    |
Dec 14 10:43:23.559 INFO [stderr] 30 |             stdout_lock.flush();
Dec 14 10:43:23.559 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:23.559 INFO [stderr]    |
Dec 14 10:43:23.559 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:23.559 INFO [stderr] 
Dec 14 10:43:23.876 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:23.876 INFO [stderr]    --> src/matrix.rs:185:15
Dec 14 10:43:23.876 INFO [stderr]     |
Dec 14 10:43:23.876 INFO [stderr] 185 |         while (current_down_index != header_index) {
Dec 14 10:43:23.877 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:23.877 INFO [stderr]     |
Dec 14 10:43:23.877 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 14 10:43:23.877 INFO [stderr] 
Dec 14 10:43:23.877 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:23.877 INFO [stderr]    --> src/matrix.rs:191:19
Dec 14 10:43:23.877 INFO [stderr]     |
Dec 14 10:43:23.877 INFO [stderr] 191 |             while (current_right_index != current_down_index) {
Dec 14 10:43:23.877 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:23.877 INFO [stderr] 
Dec 14 10:43:23.877 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:23.877 INFO [stderr]    --> src/matrix.rs:223:15
Dec 14 10:43:23.877 INFO [stderr]     |
Dec 14 10:43:23.877 INFO [stderr] 223 |         while (current_up_index != header_index) {
Dec 14 10:43:23.877 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:23.877 INFO [stderr] 
Dec 14 10:43:23.877 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:23.877 INFO [stderr]    --> src/matrix.rs:229:19
Dec 14 10:43:23.877 INFO [stderr]     |
Dec 14 10:43:23.877 INFO [stderr] 229 |             while (current_left_index != current_up_index) {
Dec 14 10:43:23.877 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:23.877 INFO [stderr] 
Dec 14 10:43:23.877 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:23.877 INFO [stderr]    --> src/matrix.rs:307:15
Dec 14 10:43:23.877 INFO [stderr]     |
Dec 14 10:43:23.877 INFO [stderr] 307 |         while (current_down_index != min_header_index) {
Dec 14 10:43:23.877 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:23.877 INFO [stderr] 
Dec 14 10:43:23.887 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:23.887 INFO [stderr]    --> src/matrix.rs:313:19
Dec 14 10:43:23.887 INFO [stderr]     |
Dec 14 10:43:23.887 INFO [stderr] 313 |             while (current_right_index != current_down_index) {
Dec 14 10:43:23.887 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:23.887 INFO [stderr] 
Dec 14 10:43:23.887 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:23.887 INFO [stderr]    --> src/matrix.rs:332:19
Dec 14 10:43:23.887 INFO [stderr]     |
Dec 14 10:43:23.887 INFO [stderr] 332 |             while (current_left_index != current_down_index) {
Dec 14 10:43:23.887 INFO [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:23.887 INFO [stderr] 
Dec 14 10:43:23.887 INFO [stderr] warning: unnecessary parentheses around `while` condition
Dec 14 10:43:23.887 INFO [stderr]    --> src/matrix.rs:358:15
Dec 14 10:43:23.887 INFO [stderr]     |
Dec 14 10:43:23.887 INFO [stderr] 358 |         while (current_header_index != Matrix::ROOT_INDEX) {
Dec 14 10:43:23.887 INFO [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:23.887 INFO [stderr] 
Dec 14 10:43:23.887 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 14 10:43:23.887 INFO [stderr]    --> src/matrix.rs:376:24
Dec 14 10:43:23.887 INFO [stderr]     |
Dec 14 10:43:23.887 INFO [stderr] 376 |                     if (current_index == row_front_index) {
Dec 14 10:43:23.887 INFO [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 14 10:43:23.887 INFO [stderr] 
Dec 14 10:43:23.887 INFO [stderr] warning: unused imports: `NodeKind`, `Node`
Dec 14 10:43:23.887 INFO [stderr]    --> src/matrix.rs:389:25
Dec 14 10:43:23.887 INFO [stderr]     |
Dec 14 10:43:23.887 INFO [stderr] 389 |     use super::{Matrix, Node, NodeKind};
Dec 14 10:43:23.887 INFO [stderr]     |                         ^^^^  ^^^^^^^^
Dec 14 10:43:23.887 INFO [stderr]     |
Dec 14 10:43:23.887 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 14 10:43:23.887 INFO [stderr] 
Dec 14 10:43:23.887 INFO [stderr] warning: unused imports: `Debug`, `Display`, `Formatter`, `Write`
Dec 14 10:43:23.887 INFO [stderr]  --> src/lib.rs:5:16
Dec 14 10:43:23.887 INFO [stderr]   |
Dec 14 10:43:23.887 INFO [stderr] 5 | use std::fmt::{Display, Write, Formatter, Debug};
Dec 14 10:43:23.887 INFO [stderr]   |                ^^^^^^^  ^^^^^  ^^^^^^^^^  ^^^^^
Dec 14 10:43:23.887 INFO [stderr] 
Dec 14 10:43:23.891 INFO [stderr] warning: unused import: `std::str::FromStr`
Dec 14 10:43:23.891 INFO [stderr]  --> src/lib.rs:6:5
Dec 14 10:43:23.891 INFO [stderr]   |
Dec 14 10:43:23.891 INFO [stderr] 6 | use std::str::FromStr;
Dec 14 10:43:23.891 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 14 10:43:23.891 INFO [stderr] 
Dec 14 10:43:23.891 INFO [stderr] warning: unused import: `matrix::*`
Dec 14 10:43:23.891 INFO [stderr]  --> src/lib.rs:9:5
Dec 14 10:43:23.891 INFO [stderr]   |
Dec 14 10:43:23.891 INFO [stderr] 9 | use matrix::*;
Dec 14 10:43:23.891 INFO [stderr]   |     ^^^^^^^^^
Dec 14 10:43:23.891 INFO [stderr] 
Dec 14 10:43:24.350 INFO [stderr] warning: unused variable: `i`
Dec 14 10:43:24.350 INFO [stderr]    --> src/board.rs:211:13
Dec 14 10:43:24.350 INFO [stderr]     |
Dec 14 10:43:24.350 INFO [stderr] 211 |         let i = col + row * 9;
Dec 14 10:43:24.350 INFO [stderr]     |             ^ help: consider using `_i` instead
Dec 14 10:43:24.350 INFO [stderr]     |
Dec 14 10:43:24.350 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 14 10:43:24.350 INFO [stderr] 
Dec 14 10:43:24.350 INFO [stderr] warning: unused variable: `dense_row_index`
Dec 14 10:43:24.350 INFO [stderr]    --> src/coords.rs:276:17
Dec 14 10:43:24.350 INFO [stderr]     |
Dec 14 10:43:24.350 INFO [stderr] 276 |             for dense_row_index in 0..9*9*9 {
Dec 14 10:43:24.350 INFO [stderr]     |                 ^^^^^^^^^^^^^^^ help: consider using `_dense_row_index` instead
Dec 14 10:43:24.350 INFO [stderr] 
Dec 14 10:43:24.350 INFO [stderr] warning: unused variable: `column`
Dec 14 10:43:24.350 INFO [stderr]    --> src/coords.rs:119:28
Dec 14 10:43:24.350 INFO [stderr]     |
Dec 14 10:43:24.350 INFO [stderr] 119 |     pub fn to_dense(&self, column: &SparseColumn) -> DenseRow {
Dec 14 10:43:24.350 INFO [stderr]     |                            ^^^^^^ help: consider using `_column` instead
Dec 14 10:43:24.350 INFO [stderr] 
Dec 14 10:43:24.350 INFO [stderr] warning: unused variable: `sparse_row`
Dec 14 10:43:24.350 INFO [stderr]   --> src/lib.rs:95:17
Dec 14 10:43:24.350 INFO [stderr]    |
Dec 14 10:43:24.350 INFO [stderr] 95 |             let sparse_row = SparseRow::new(row_index);
Dec 14 10:43:24.350 INFO [stderr]    |                 ^^^^^^^^^^ help: consider using `_sparse_row` instead
Dec 14 10:43:24.350 INFO [stderr] 
Dec 14 10:43:24.350 INFO [stderr] warning: unused variable: `board`
Dec 14 10:43:24.350 INFO [stderr]    --> src/lib.rs:123:25
Dec 14 10:43:24.350 INFO [stderr]     |
Dec 14 10:43:24.350 INFO [stderr] 123 |     fn solve(&mut self, board: &mut Board) -> Result<(), ()> {
Dec 14 10:43:24.350 INFO [stderr]     |                         ^^^^^ help: consider using `_board` instead
Dec 14 10:43:24.350 INFO [stderr] 
Dec 14 10:43:24.363 INFO [stderr] warning: variable does not need to be mutable
Dec 14 10:43:24.364 INFO [stderr]   --> src/lib.rs:65:13
Dec 14 10:43:24.364 INFO [stderr]    |
Dec 14 10:43:24.364 INFO [stderr] 65 |         let mut matrix = [[Link::default(); NONZERO_CONSTRAINTS_PER_POSSIBILITY]; POSSIBILITIES];
Dec 14 10:43:24.364 INFO [stderr]    |             ----^^^^^^
Dec 14 10:43:24.364 INFO [stderr]    |             |
Dec 14 10:43:24.364 INFO [stderr]    |             help: remove this `mut`
Dec 14 10:43:24.364 INFO [stderr]    |
Dec 14 10:43:24.364 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 10:43:24.364 INFO [stderr] 
Dec 14 10:43:24.364 INFO [stderr] warning: variable does not need to be mutable
Dec 14 10:43:24.364 INFO [stderr]   --> src/lib.rs:66:13
Dec 14 10:43:24.364 INFO [stderr]    |
Dec 14 10:43:24.364 INFO [stderr] 66 |         let mut headers = [Header::default(); CONSTRAINTS];
Dec 14 10:43:24.364 INFO [stderr]    |             ----^^^^^^^
Dec 14 10:43:24.364 INFO [stderr]    |             |
Dec 14 10:43:24.364 INFO [stderr]    |             help: remove this `mut`
Dec 14 10:43:24.364 INFO [stderr] 
Dec 14 10:43:24.367 INFO [stderr] warning: variable does not need to be mutable
Dec 14 10:43:24.367 INFO [stderr]    --> src/lib.rs:114:9
Dec 14 10:43:24.367 INFO [stderr]     |
Dec 14 10:43:24.367 INFO [stderr] 114 |     let mut constraint: &mut Link = &mut row[dense_column_index];
Dec 14 10:43:24.367 INFO [stderr]     |         ----^^^^^^^^^^
Dec 14 10:43:24.367 INFO [stderr]     |         |
Dec 14 10:43:24.367 INFO [stderr]     |         help: remove this `mut`
Dec 14 10:43:24.367 INFO [stderr] 
Dec 14 10:43:24.494 INFO [stderr] warning: method is never used: `to_sparse`
Dec 14 10:43:24.494 INFO [stderr]   --> src/coords.rs:18:5
Dec 14 10:43:24.494 INFO [stderr]    |
Dec 14 10:43:24.494 INFO [stderr] 18 |     pub fn to_sparse(&self) -> SparseRow {
Dec 14 10:43:24.494 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:24.494 INFO [stderr]    |
Dec 14 10:43:24.494 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 14 10:43:24.494 INFO [stderr] 
Dec 14 10:43:24.494 INFO [stderr] warning: constant item is never used: `POSSIBILITIES`
Dec 14 10:43:24.494 INFO [stderr]  --> src/matrix.rs:5:1
Dec 14 10:43:24.494 INFO [stderr]   |
Dec 14 10:43:24.494 INFO [stderr] 5 | const POSSIBILITIES: usize = 9 * 9 * 9;
Dec 14 10:43:24.494 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:24.494 INFO [stderr] 
Dec 14 10:43:24.494 INFO [stderr] warning: constant item is never used: `CONSTRAINTS`
Dec 14 10:43:24.494 INFO [stderr]  --> src/matrix.rs:9:1
Dec 14 10:43:24.494 INFO [stderr]   |
Dec 14 10:43:24.494 INFO [stderr] 9 | const CONSTRAINTS: usize = 9 * 9 + 9 * 9 + 9 * 9 + 9 * 9;
Dec 14 10:43:24.494 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:24.494 INFO [stderr] 
Dec 14 10:43:24.494 INFO [stderr] warning: constant item is never used: `NONZERO_CONSTRAINTS_PER_POSSIBILITY`
Dec 14 10:43:24.494 INFO [stderr]   --> src/matrix.rs:13:1
Dec 14 10:43:24.494 INFO [stderr]    |
Dec 14 10:43:24.494 INFO [stderr] 13 | const NONZERO_CONSTRAINTS_PER_POSSIBILITY: usize = 4;
Dec 14 10:43:24.494 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:24.494 INFO [stderr] 
Dec 14 10:43:24.494 INFO [stderr] warning: constant item is never used: `MATRIX_NODE_COUNT`
Dec 14 10:43:24.494 INFO [stderr]   --> src/matrix.rs:16:1
Dec 14 10:43:24.494 INFO [stderr]    |
Dec 14 10:43:24.494 INFO [stderr] 16 | const MATRIX_NODE_COUNT: usize = 1 + CONSTRAINTS + POSSIBILITIES * NONZERO_CONSTRAINTS_PER_POSSIBILITY;
Dec 14 10:43:24.494 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:24.494 INFO [stderr] 
Dec 14 10:43:24.496 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:24.496 INFO [stderr]    --> src/matrix.rs:359:13
Dec 14 10:43:24.496 INFO [stderr]     |
Dec 14 10:43:24.496 INFO [stderr] 359 |             writeln!(f, "col {:?}", self.nodes[current_header_index]);
Dec 14 10:43:24.496 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:24.496 INFO [stderr]     |
Dec 14 10:43:24.496 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 14 10:43:24.496 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:24.496 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 14 10:43:24.496 INFO [stderr] 
Dec 14 10:43:24.499 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:24.499 INFO [stderr]   --> src/board.rs:84:13
Dec 14 10:43:24.499 INFO [stderr]    |
Dec 14 10:43:24.499 INFO [stderr] 84 |             write!(to, "{} ", c);
Dec 14 10:43:24.499 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:24.499 INFO [stderr]    |
Dec 14 10:43:24.499 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:24.499 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 14 10:43:24.499 INFO [stderr] 
Dec 14 10:43:24.499 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:24.499 INFO [stderr]   --> src/board.rs:86:9
Dec 14 10:43:24.499 INFO [stderr]    |
Dec 14 10:43:24.499 INFO [stderr] 86 |         write!(to, "{}", self.entries[9*9-1]);
Dec 14 10:43:24.499 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:24.499 INFO [stderr]    |
Dec 14 10:43:24.499 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:24.499 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 14 10:43:24.499 INFO [stderr] 
Dec 14 10:43:24.507 INFO [stderr] warning: comparison is useless due to type limits
Dec 14 10:43:24.507 INFO [stderr]    --> src/board.rs:158:25
Dec 14 10:43:24.507 INFO [stderr]     |
Dec 14 10:43:24.507 INFO [stderr] 158 |                 assert!(value >= 0 && value <= 9);
Dec 14 10:43:24.507 INFO [stderr]     |                         ^^^^^^^^^^
Dec 14 10:43:24.507 INFO [stderr]     |
Dec 14 10:43:24.507 INFO [stderr]     = note: #[warn(unused_comparisons)] on by default
Dec 14 10:43:24.507 INFO [stderr] 
Dec 14 10:43:24.507 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:43:24.507 INFO [stderr]    --> src/board.rs:202:13
Dec 14 10:43:24.507 INFO [stderr]     |
Dec 14 10:43:24.507 INFO [stderr] 202 |             fmt_row(self, f, &mut buf, row);
Dec 14 10:43:24.507 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:43:24.507 INFO [stderr]     |
Dec 14 10:43:24.507 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:43:24.507 INFO [stderr] 
Dec 14 10:43:25.532 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.82s
Dec 14 10:43:25.539 INFO [stderr] su: No module specific data is present
Dec 14 10:43:26.315 INFO running `"docker" "inspect" "1776f9fbc6a405e8233644400758ec5aa0fa222fc6ff97df615260f25a8fc169"`
Dec 14 10:43:26.680 INFO running `"docker" "rm" "-f" "1776f9fbc6a405e8233644400758ec5aa0fa222fc6ff97df615260f25a8fc169"`
Dec 14 10:43:27.045 INFO [stdout] 1776f9fbc6a405e8233644400758ec5aa0fa222fc6ff97df615260f25a8fc169
Dec 14 10:43:27.048 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14 10:43:27.751 INFO [stdout] e5f9dc8c8b8e39d69dc39f4dae56b89563cdf0119e8eabf64835b87c2fc5ff16
Dec 14 10:43:27.753 INFO running `"docker" "start" "-a" "e5f9dc8c8b8e39d69dc39f4dae56b89563cdf0119e8eabf64835b87c2fc5ff16"`
Dec 14 10:43:29.383 INFO [stderr] usermod: no changes
Dec 14 10:43:29.438 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Dec 14 10:43:29.451 INFO [stderr]      Running /target/debug/deps/sudoku-ddc9f709947619ac
Dec 14 10:43:29.463 INFO [stdout] 
Dec 14 10:43:29.463 INFO [stdout] running 18 tests
Dec 14 10:43:29.463 INFO [stdout] test board::tests::board_from_multiline_str ... ok
Dec 14 10:43:29.463 INFO [stdout] test board::tests::board_from_singleline_str ... ok
Dec 14 10:43:29.463 INFO [stdout] test board::tests::possibility_get_matrix_row ... ok
Dec 14 10:43:29.463 INFO [stdout] test board::tests::singleline_and_multiline_board_equivalency ... ok
Dec 14 10:43:29.463 INFO [stdout] test board::tests::possibility_get_matrix_column_box ... ok
Dec 14 10:43:29.463 INFO [stdout] test board::tests::possibility_get_matrix_column_cell ... ok
Dec 14 10:43:29.463 INFO [stdout] test coords::tests::first_row ... ok
Dec 14 10:43:29.463 INFO [stdout] test board::tests::possibility_get_matrix_column_column ... ok
Dec 14 10:43:29.463 INFO [stdout] test coords::tests::dense_column_to_sparse ... ok
Dec 14 10:43:29.463 INFO [stdout] test coords::tests::natural_down ... ok
Dec 14 10:43:29.463 INFO [stdout] test board::tests::possibility_from_matrix_row_consistent_with_get_matrix_row ... ok
Dec 14 10:43:29.463 INFO [stdout] test board::tests::possibility_get_matrix_column_row ... ok
Dec 14 10:43:29.463 INFO [stdout] test coords::tests::natural_left ... ok
Dec 14 10:43:29.486 INFO [stdout] test coords::tests::natural_left_right_reflexive ... ok
Dec 14 10:43:29.487 INFO [stderr]      Running /target/debug/deps/sudoku-08b754c0be1532ad
Dec 14 10:43:29.487 INFO [stdout] test coords::tests::natural_right ... ok
Dec 14 10:43:29.487 INFO [stderr]    Doc-tests sudoku
Dec 14 10:43:29.487 INFO [stdout] test coords::tests::natural_up ... ok
Dec 14 10:43:29.487 INFO [stdout] test coords::tests::natural_up_down_reflexive ... ok
Dec 14 10:43:29.487 INFO [stdout] test matrix::tests::new_matrix ... ok
Dec 14 10:43:29.487 INFO [stdout] 
Dec 14 10:43:29.487 INFO [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 10:43:29.487 INFO [stdout] 
Dec 14 10:43:29.487 INFO [stdout] 
Dec 14 10:43:29.487 INFO [stdout] running 0 tests
Dec 14 10:43:29.487 INFO [stdout] 
Dec 14 10:43:29.487 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 10:43:29.487 INFO [stdout] 
Dec 14 10:43:30.393 INFO [stdout] 
Dec 14 10:43:30.393 INFO [stdout] running 0 tests
Dec 14 10:43:30.393 INFO [stdout] 
Dec 14 10:43:30.393 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 10:43:30.393 INFO [stdout] 
Dec 14 10:43:30.403 INFO [stderr] su: No module specific data is present
Dec 14 10:43:31.046 INFO running `"docker" "inspect" "e5f9dc8c8b8e39d69dc39f4dae56b89563cdf0119e8eabf64835b87c2fc5ff16"`
Dec 14 10:43:31.375 INFO running `"docker" "rm" "-f" "e5f9dc8c8b8e39d69dc39f4dae56b89563cdf0119e8eabf64835b87c2fc5ff16"`
Dec 14 10:43:31.651 INFO [stdout] e5f9dc8c8b8e39d69dc39f4dae56b89563cdf0119e8eabf64835b87c2fc5ff16