Oct 27 11:56:30.667 INFO checking EthanTheMaster/sudoku_solver against try#19f01b935b91481fd445b16b533d2f87661bf12e for pr-55192-2
Oct 27 11:56:30.668 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192-2/worker-3/try#19f01b935b91481fd445b16b533d2f87661bf12e:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-3/pr-55192-2/try#19f01b935b91481fd445b16b533d2f87661bf12e:/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 +19f01b935b91481fd445b16b533d2f87661bf12e-alt check --frozen --all --all-targets" "-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"`
Oct 27 11:56:31.075 INFO blam! bdc2fc7d1e7772d0cddc57866edf4345dd0e7fe1b4afc7b993e983584d25d8dd
Oct 27 11:56:31.078 INFO running `"docker" "start" "-a" "bdc2fc7d1e7772d0cddc57866edf4345dd0e7fe1b4afc7b993e983584d25d8dd"`
Oct 27 11:56:32.483 INFO kablam! usermod: no changes
Oct 27 11:56:32.537 INFO kablam!     Checking sudoku_solver v0.1.0 (/source)
Oct 27 11:56:33.479 INFO kablam! warning: unused variable: `operation`
Oct 27 11:56:33.479 INFO kablam!   --> src/sudoku_solver_dancinglinks/mod.rs:96:32
Oct 27 11:56:33.480 INFO kablam!    |
Oct 27 11:56:33.480 INFO kablam! 96 |         if let NodeType::Field(operation, column_header_id) = node_type {
Oct 27 11:56:33.480 INFO kablam!    |                                ^^^^^^^^^ help: consider using `_operation` instead
Oct 27 11:56:33.480 INFO kablam!    |
Oct 27 11:56:33.481 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 27 11:56:33.481 INFO kablam! 
Oct 27 11:56:33.481 INFO kablam! warning: unused variable: `constraint`
Oct 27 11:56:33.482 INFO kablam!    --> src/sudoku_solver_dancinglinks/mod.rs:100:48
Oct 27 11:56:33.482 INFO kablam!     |
Oct 27 11:56:33.482 INFO kablam! 100 |                 NodeType::ColumnHeader(ref mut constraint, ref mut size) => {
Oct 27 11:56:33.482 INFO kablam!     |                                                ^^^^^^^^^^ help: consider using `_constraint` instead
Oct 27 11:56:33.483 INFO kablam! 
Oct 27 11:56:33.483 INFO kablam! warning: unused variable: `operation`
Oct 27 11:56:33.483 INFO kablam!    --> src/sudoku_solver_dancinglinks/mod.rs:119:29
Oct 27 11:56:33.483 INFO kablam!     |
Oct 27 11:56:33.484 INFO kablam! 119 |             NodeType::Field(operation, column_header_id) => {
Oct 27 11:56:33.484 INFO kablam!     |                             ^^^^^^^^^ help: consider using `_operation` instead
Oct 27 11:56:33.484 INFO kablam! 
Oct 27 11:56:33.485 INFO kablam! warning: unused variable: `constraint`
Oct 27 11:56:33.485 INFO kablam!    --> src/sudoku_solver_dancinglinks/mod.rs:127:36
Oct 27 11:56:33.485 INFO kablam!     |
Oct 27 11:56:33.485 INFO kablam! 127 |             NodeType::ColumnHeader(constraint, size) => {
Oct 27 11:56:33.486 INFO kablam!     |                                    ^^^^^^^^^^ help: consider using `_constraint` instead
Oct 27 11:56:33.486 INFO kablam! 
Oct 27 11:56:33.486 INFO kablam! warning: unused variable: `constraint`
Oct 27 11:56:33.487 INFO kablam!    --> src/sudoku_solver_dancinglinks/mod.rs:226:44
Oct 27 11:56:33.487 INFO kablam!     |
Oct 27 11:56:33.487 INFO kablam! 226 |                     NodeType::ColumnHeader(constraint, ref mut size) => {
Oct 27 11:56:33.487 INFO kablam!     |                                            ^^^^^^^^^^ help: consider using `_constraint` instead
Oct 27 11:56:33.488 INFO kablam! 
Oct 27 11:56:33.488 INFO kablam! warning: unused variable: `constraint`
Oct 27 11:56:33.488 INFO kablam!    --> src/sudoku_solver_dancinglinks/mod.rs:269:44
Oct 27 11:56:33.488 INFO kablam!     |
Oct 27 11:56:33.489 INFO kablam! 269 |                     NodeType::ColumnHeader(constraint, ref mut size) => {
Oct 27 11:56:33.489 INFO kablam!     |                                            ^^^^^^^^^^ help: consider using `_constraint` instead
Oct 27 11:56:33.489 INFO kablam! 
Oct 27 11:56:33.491 INFO kablam! warning: unused variable: `idx`
Oct 27 11:56:33.492 INFO kablam!   --> src/sudoku_solver_backtrack/mod.rs:35:24
Oct 27 11:56:33.492 INFO kablam!    |
Oct 27 11:56:33.492 INFO kablam! 35 |             .filter(|&(idx, val)| {
Oct 27 11:56:33.492 INFO kablam!    |                        ^^^ help: consider using `_idx` instead
Oct 27 11:56:33.493 INFO kablam! 
Oct 27 11:56:33.493 INFO kablam! warning: unused variable: `val`
Oct 27 11:56:33.493 INFO kablam!   --> src/sudoku_solver_backtrack/mod.rs:37:27
Oct 27 11:56:33.494 INFO kablam!    |
Oct 27 11:56:33.494 INFO kablam! 37 |             }).map(|(idx, val)| {
Oct 27 11:56:33.494 INFO kablam!    |                           ^^^ help: consider using `_val` instead
Oct 27 11:56:33.494 INFO kablam! 
Oct 27 11:56:33.583 INFO kablam! warning: variable does not need to be mutable
Oct 27 11:56:33.583 INFO kablam!   --> src/sudoku_solver_backtrack/mod.rs:34:13
Oct 27 11:56:33.583 INFO kablam!    |
Oct 27 11:56:33.583 INFO kablam! 34 |         let mut blank_positions: Vec<usize> = self.board.iter().enumerate()
Oct 27 11:56:33.583 INFO kablam!    |             ----^^^^^^^^^^^^^^^
Oct 27 11:56:33.583 INFO kablam!    |             |
Oct 27 11:56:33.583 INFO kablam!    |             help: remove this `mut`
Oct 27 11:56:33.583 INFO kablam!    |
Oct 27 11:56:33.583 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 27 11:56:33.583 INFO kablam! 
Oct 27 11:56:33.687 INFO kablam! warning: unused variable: `operation`
Oct 27 11:56:33.687 INFO kablam!   --> src/sudoku_solver_dancinglinks/mod.rs:96:32
Oct 27 11:56:33.687 INFO kablam!    |
Oct 27 11:56:33.687 INFO kablam! 96 |         if let NodeType::Field(operation, column_header_id) = node_type {
Oct 27 11:56:33.687 INFO kablam!    |                                ^^^^^^^^^ help: consider using `_operation` instead
Oct 27 11:56:33.687 INFO kablam!    |
Oct 27 11:56:33.687 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 27 11:56:33.687 INFO kablam! 
Oct 27 11:56:33.687 INFO kablam! warning: unused variable: `constraint`
Oct 27 11:56:33.687 INFO kablam!    --> src/sudoku_solver_dancinglinks/mod.rs:100:48
Oct 27 11:56:33.687 INFO kablam!     |
Oct 27 11:56:33.687 INFO kablam! 100 |                 NodeType::ColumnHeader(ref mut constraint, ref mut size) => {
Oct 27 11:56:33.687 INFO kablam!     |                                                ^^^^^^^^^^ help: consider using `_constraint` instead
Oct 27 11:56:33.687 INFO kablam! 
Oct 27 11:56:33.687 INFO kablam! warning: unused variable: `operation`
Oct 27 11:56:33.687 INFO kablam!    --> src/sudoku_solver_dancinglinks/mod.rs:119:29
Oct 27 11:56:33.687 INFO kablam!     |
Oct 27 11:56:33.687 INFO kablam! 119 |             NodeType::Field(operation, column_header_id) => {
Oct 27 11:56:33.687 INFO kablam!     |                             ^^^^^^^^^ help: consider using `_operation` instead
Oct 27 11:56:33.687 INFO kablam! 
Oct 27 11:56:33.687 INFO kablam! warning: unused variable: `constraint`
Oct 27 11:56:33.687 INFO kablam!    --> src/sudoku_solver_dancinglinks/mod.rs:127:36
Oct 27 11:56:33.687 INFO kablam!     |
Oct 27 11:56:33.687 INFO kablam! 127 |             NodeType::ColumnHeader(constraint, size) => {
Oct 27 11:56:33.687 INFO kablam!     |                                    ^^^^^^^^^^ help: consider using `_constraint` instead
Oct 27 11:56:33.687 INFO kablam! 
Oct 27 11:56:33.687 INFO kablam! warning: unused variable: `constraint`
Oct 27 11:56:33.687 INFO kablam!    --> src/sudoku_solver_dancinglinks/mod.rs:226:44
Oct 27 11:56:33.687 INFO kablam!     |
Oct 27 11:56:33.687 INFO kablam! 226 |                     NodeType::ColumnHeader(constraint, ref mut size) => {
Oct 27 11:56:33.687 INFO kablam!     |                                            ^^^^^^^^^^ help: consider using `_constraint` instead
Oct 27 11:56:33.687 INFO kablam! 
Oct 27 11:56:33.687 INFO kablam! warning: unused variable: `constraint`
Oct 27 11:56:33.687 INFO kablam!    --> src/sudoku_solver_dancinglinks/mod.rs:269:44
Oct 27 11:56:33.687 INFO kablam!     |
Oct 27 11:56:33.687 INFO kablam! 269 |                     NodeType::ColumnHeader(constraint, ref mut size) => {
Oct 27 11:56:33.687 INFO kablam!     |                                            ^^^^^^^^^^ help: consider using `_constraint` instead
Oct 27 11:56:33.687 INFO kablam! 
Oct 27 11:56:33.687 INFO kablam! warning: unused variable: `idx`
Oct 27 11:56:33.687 INFO kablam!   --> src/sudoku_solver_backtrack/mod.rs:35:24
Oct 27 11:56:33.687 INFO kablam!    |
Oct 27 11:56:33.687 INFO kablam! 35 |             .filter(|&(idx, val)| {
Oct 27 11:56:33.687 INFO kablam!    |                        ^^^ help: consider using `_idx` instead
Oct 27 11:56:33.687 INFO kablam! 
Oct 27 11:56:33.687 INFO kablam! warning: unused variable: `val`
Oct 27 11:56:33.687 INFO kablam!   --> src/sudoku_solver_backtrack/mod.rs:37:27
Oct 27 11:56:33.703 INFO kablam!    |
Oct 27 11:56:33.703 INFO kablam! 37 |             }).map(|(idx, val)| {
Oct 27 11:56:33.703 INFO kablam!    |                           ^^^ help: consider using `_val` instead
Oct 27 11:56:33.703 INFO kablam! 
Oct 27 11:56:33.759 INFO kablam! warning: variable does not need to be mutable
Oct 27 11:56:33.759 INFO kablam!   --> src/sudoku_solver_backtrack/mod.rs:34:13
Oct 27 11:56:33.759 INFO kablam!    |
Oct 27 11:56:33.759 INFO kablam! 34 |         let mut blank_positions: Vec<usize> = self.board.iter().enumerate()
Oct 27 11:56:33.759 INFO kablam!    |             ----^^^^^^^^^^^^^^^
Oct 27 11:56:33.759 INFO kablam!    |             |
Oct 27 11:56:33.759 INFO kablam!    |             help: remove this `mut`
Oct 27 11:56:33.759 INFO kablam!    |
Oct 27 11:56:33.759 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 27 11:56:33.759 INFO kablam! 
Oct 27 11:56:33.807 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
Oct 27 11:56:33.807 INFO kablam! su: No module specific data is present
Oct 27 11:56:34.529 INFO running `"docker" "rm" "-f" "bdc2fc7d1e7772d0cddc57866edf4345dd0e7fe1b4afc7b993e983584d25d8dd"`
Oct 27 11:56:34.815 INFO blam! bdc2fc7d1e7772d0cddc57866edf4345dd0e7fe1b4afc7b993e983584d25d8dd