Nov 28 13:43:21.837 INFO checking ErikPartridge/sudoku-generator against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 13:43:21.837 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-3/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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"`
Nov 28 13:43:22.173 INFO [stdout] d09bdcb825e5c30a2af1036bffc86bf568855bc1d5729a3033f8051e41e66fad
Nov 28 13:43:22.175 INFO running `"docker" "start" "-a" "d09bdcb825e5c30a2af1036bffc86bf568855bc1d5729a3033f8051e41e66fad"`
Nov 28 13:43:23.020 INFO [stderr] usermod: no changes
Nov 28 13:43:23.088 INFO [stderr]     Checking sudoku-generator v0.1.0 (/source)
Nov 28 13:43:23.588 INFO [stderr] warning: unused import: `freedom::Freedom`
Nov 28 13:43:23.588 INFO [stderr]  --> src/main.rs:3:5
Nov 28 13:43:23.588 INFO [stderr]   |
Nov 28 13:43:23.588 INFO [stderr] 3 | use freedom::Freedom;
Nov 28 13:43:23.588 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Nov 28 13:43:23.588 INFO [stderr]   |
Nov 28 13:43:23.588 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 13:43:23.588 INFO [stderr] 
Nov 28 13:43:23.588 INFO [stderr] warning: unused import: `problem::Problem`
Nov 28 13:43:23.588 INFO [stderr]  --> src/main.rs:4:5
Nov 28 13:43:23.588 INFO [stderr]   |
Nov 28 13:43:23.589 INFO [stderr] 4 | use problem::Problem;
Nov 28 13:43:23.589 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Nov 28 13:43:23.589 INFO [stderr] 
Nov 28 13:43:23.656 INFO [stderr] warning: unused variable: `j`
Nov 28 13:43:23.656 INFO [stderr]   --> src/freedom.rs:28:9
Nov 28 13:43:23.656 INFO [stderr]    |
Nov 28 13:43:23.656 INFO [stderr] 28 |     for j in 0..3 {
Nov 28 13:43:23.656 INFO [stderr]    |         ^ help: consider using `_j` instead
Nov 28 13:43:23.657 INFO [stderr]    |
Nov 28 13:43:23.657 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:43:23.657 INFO [stderr] 
Nov 28 13:43:23.666 INFO [stderr] warning: constant item is never used: `ORDER`
Nov 28 13:43:23.666 INFO [stderr]  --> src/freedom.rs:1:1
Nov 28 13:43:23.666 INFO [stderr]   |
Nov 28 13:43:23.666 INFO [stderr] 1 | const ORDER: u8 = 3;
Nov 28 13:43:23.666 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.666 INFO [stderr]   |
Nov 28 13:43:23.666 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 13:43:23.666 INFO [stderr] 
Nov 28 13:43:23.666 INFO [stderr] warning: constant item is never used: `DIM`
Nov 28 13:43:23.666 INFO [stderr]  --> src/freedom.rs:2:1
Nov 28 13:43:23.666 INFO [stderr]   |
Nov 28 13:43:23.666 INFO [stderr] 2 | const DIM: u8 = ORDER * ORDER;
Nov 28 13:43:23.666 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.666 INFO [stderr] 
Nov 28 13:43:23.667 INFO [stderr] warning: constant item is never used: `ELEMENTS`
Nov 28 13:43:23.667 INFO [stderr]  --> src/freedom.rs:3:1
Nov 28 13:43:23.667 INFO [stderr]   |
Nov 28 13:43:23.667 INFO [stderr] 3 | const ELEMENTS: u8 = DIM * DIM;
Nov 28 13:43:23.667 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.667 INFO [stderr] 
Nov 28 13:43:23.667 INFO [stderr] warning: constant item is never used: `ALL_VALUES`
Nov 28 13:43:23.667 INFO [stderr]  --> src/freedom.rs:4:1
Nov 28 13:43:23.667 INFO [stderr]   |
Nov 28 13:43:23.667 INFO [stderr] 4 | const ALL_VALUES: u16 = (1 << DIM) - 1;
Nov 28 13:43:23.667 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.667 INFO [stderr] 
Nov 28 13:43:23.667 INFO [stderr] warning: struct is never constructed: `Freedom`
Nov 28 13:43:23.667 INFO [stderr]  --> src/freedom.rs:7:1
Nov 28 13:43:23.667 INFO [stderr]   |
Nov 28 13:43:23.667 INFO [stderr] 7 | pub struct Freedom {
Nov 28 13:43:23.667 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.667 INFO [stderr] 
Nov 28 13:43:23.667 INFO [stderr] warning: function is never used: `singleton`
Nov 28 13:43:23.667 INFO [stderr]   --> src/freedom.rs:11:1
Nov 28 13:43:23.667 INFO [stderr]    |
Nov 28 13:43:23.667 INFO [stderr] 11 | fn singleton(v: u16) -> u16 {
Nov 28 13:43:23.667 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.667 INFO [stderr] 
Nov 28 13:43:23.667 INFO [stderr] warning: function is never used: `freedom_eliminate`
Nov 28 13:43:23.667 INFO [stderr]   --> src/freedom.rs:16:1
Nov 28 13:43:23.667 INFO [stderr]    |
Nov 28 13:43:23.667 INFO [stderr] 16 | fn freedom_eliminate(f: &Freedom, col: u16, row: u16, value: u16) -> Freedom {
Nov 28 13:43:23.667 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.667 INFO [stderr] 
Nov 28 13:43:23.667 INFO [stderr] warning: function is never used: `create_freedom`
Nov 28 13:43:23.667 INFO [stderr]   --> src/freedom.rs:38:1
Nov 28 13:43:23.667 INFO [stderr]    |
Nov 28 13:43:23.667 INFO [stderr] 38 | fn create_freedom(problem: &Problem) -> Freedom {
Nov 28 13:43:23.667 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.667 INFO [stderr] 
Nov 28 13:43:23.667 INFO [stderr] warning: function is never used: `sanity_check`
Nov 28 13:43:23.667 INFO [stderr]   --> src/freedom.rs:52:1
Nov 28 13:43:23.667 INFO [stderr]    |
Nov 28 13:43:23.667 INFO [stderr] 52 | fn sanity_check(problem: &Problem, freedom: &Freedom) -> bool {
Nov 28 13:43:23.667 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.667 INFO [stderr] 
Nov 28 13:43:23.667 INFO [stderr] warning: function is never used: `search_least_free`
Nov 28 13:43:23.667 INFO [stderr]   --> src/freedom.rs:63:1
Nov 28 13:43:23.667 INFO [stderr]    |
Nov 28 13:43:23.667 INFO [stderr] 63 | fn search_least_free(problem: &Problem, freedom: &Freedom) -> u16 {
Nov 28 13:43:23.667 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.667 INFO [stderr] 
Nov 28 13:43:23.667 INFO [stderr] warning: struct is never constructed: `Problem`
Nov 28 13:43:23.667 INFO [stderr]  --> src/problem.rs:1:1
Nov 28 13:43:23.667 INFO [stderr]   |
Nov 28 13:43:23.667 INFO [stderr] 1 | pub struct Problem {
Nov 28 13:43:23.667 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.667 INFO [stderr] 
Nov 28 13:43:23.705 INFO [stderr] warning: unused import: `freedom::Freedom`
Nov 28 13:43:23.705 INFO [stderr]  --> src/main.rs:3:5
Nov 28 13:43:23.705 INFO [stderr]   |
Nov 28 13:43:23.705 INFO [stderr] 3 | use freedom::Freedom;
Nov 28 13:43:23.705 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Nov 28 13:43:23.705 INFO [stderr]   |
Nov 28 13:43:23.705 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 13:43:23.705 INFO [stderr] 
Nov 28 13:43:23.705 INFO [stderr] warning: unused import: `problem::Problem`
Nov 28 13:43:23.705 INFO [stderr]  --> src/main.rs:4:5
Nov 28 13:43:23.705 INFO [stderr]   |
Nov 28 13:43:23.705 INFO [stderr] 4 | use problem::Problem;
Nov 28 13:43:23.705 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Nov 28 13:43:23.705 INFO [stderr] 
Nov 28 13:43:23.758 INFO [stderr] warning: unused variable: `j`
Nov 28 13:43:23.758 INFO [stderr]   --> src/freedom.rs:28:9
Nov 28 13:43:23.758 INFO [stderr]    |
Nov 28 13:43:23.758 INFO [stderr] 28 |     for j in 0..3 {
Nov 28 13:43:23.758 INFO [stderr]    |         ^ help: consider using `_j` instead
Nov 28 13:43:23.758 INFO [stderr]    |
Nov 28 13:43:23.758 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 13:43:23.758 INFO [stderr] 
Nov 28 13:43:23.758 INFO [stderr] warning: constant item is never used: `ORDER`
Nov 28 13:43:23.758 INFO [stderr]  --> src/freedom.rs:1:1
Nov 28 13:43:23.758 INFO [stderr]   |
Nov 28 13:43:23.758 INFO [stderr] 1 | const ORDER: u8 = 3;
Nov 28 13:43:23.758 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.758 INFO [stderr]   |
Nov 28 13:43:23.758 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 13:43:23.758 INFO [stderr] 
Nov 28 13:43:23.758 INFO [stderr] warning: constant item is never used: `DIM`
Nov 28 13:43:23.758 INFO [stderr]  --> src/freedom.rs:2:1
Nov 28 13:43:23.758 INFO [stderr]   |
Nov 28 13:43:23.758 INFO [stderr] 2 | const DIM: u8 = ORDER * ORDER;
Nov 28 13:43:23.758 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.758 INFO [stderr] 
Nov 28 13:43:23.758 INFO [stderr] warning: constant item is never used: `ELEMENTS`
Nov 28 13:43:23.758 INFO [stderr]  --> src/freedom.rs:3:1
Nov 28 13:43:23.758 INFO [stderr]   |
Nov 28 13:43:23.758 INFO [stderr] 3 | const ELEMENTS: u8 = DIM * DIM;
Nov 28 13:43:23.758 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.758 INFO [stderr] 
Nov 28 13:43:23.758 INFO [stderr] warning: constant item is never used: `ALL_VALUES`
Nov 28 13:43:23.758 INFO [stderr]  --> src/freedom.rs:4:1
Nov 28 13:43:23.758 INFO [stderr]   |
Nov 28 13:43:23.758 INFO [stderr] 4 | const ALL_VALUES: u16 = (1 << DIM) - 1;
Nov 28 13:43:23.758 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.758 INFO [stderr] 
Nov 28 13:43:23.758 INFO [stderr] warning: struct is never constructed: `Freedom`
Nov 28 13:43:23.758 INFO [stderr]  --> src/freedom.rs:7:1
Nov 28 13:43:23.758 INFO [stderr]   |
Nov 28 13:43:23.758 INFO [stderr] 7 | pub struct Freedom {
Nov 28 13:43:23.758 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.758 INFO [stderr] 
Nov 28 13:43:23.758 INFO [stderr] warning: function is never used: `singleton`
Nov 28 13:43:23.758 INFO [stderr]   --> src/freedom.rs:11:1
Nov 28 13:43:23.758 INFO [stderr]    |
Nov 28 13:43:23.758 INFO [stderr] 11 | fn singleton(v: u16) -> u16 {
Nov 28 13:43:23.758 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.758 INFO [stderr] 
Nov 28 13:43:23.758 INFO [stderr] warning: function is never used: `freedom_eliminate`
Nov 28 13:43:23.758 INFO [stderr]   --> src/freedom.rs:16:1
Nov 28 13:43:23.758 INFO [stderr]    |
Nov 28 13:43:23.758 INFO [stderr] 16 | fn freedom_eliminate(f: &Freedom, col: u16, row: u16, value: u16) -> Freedom {
Nov 28 13:43:23.758 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.758 INFO [stderr] 
Nov 28 13:43:23.758 INFO [stderr] warning: function is never used: `create_freedom`
Nov 28 13:43:23.758 INFO [stderr]   --> src/freedom.rs:38:1
Nov 28 13:43:23.758 INFO [stderr]    |
Nov 28 13:43:23.758 INFO [stderr] 38 | fn create_freedom(problem: &Problem) -> Freedom {
Nov 28 13:43:23.758 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.758 INFO [stderr] 
Nov 28 13:43:23.758 INFO [stderr] warning: function is never used: `sanity_check`
Nov 28 13:43:23.758 INFO [stderr]   --> src/freedom.rs:52:1
Nov 28 13:43:23.758 INFO [stderr]    |
Nov 28 13:43:23.758 INFO [stderr] 52 | fn sanity_check(problem: &Problem, freedom: &Freedom) -> bool {
Nov 28 13:43:23.758 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.758 INFO [stderr] 
Nov 28 13:43:23.758 INFO [stderr] warning: function is never used: `search_least_free`
Nov 28 13:43:23.759 INFO [stderr]   --> src/freedom.rs:63:1
Nov 28 13:43:23.759 INFO [stderr]    |
Nov 28 13:43:23.759 INFO [stderr] 63 | fn search_least_free(problem: &Problem, freedom: &Freedom) -> u16 {
Nov 28 13:43:23.759 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.759 INFO [stderr] 
Nov 28 13:43:23.759 INFO [stderr] warning: struct is never constructed: `Problem`
Nov 28 13:43:23.759 INFO [stderr]  --> src/problem.rs:1:1
Nov 28 13:43:23.759 INFO [stderr]   |
Nov 28 13:43:23.759 INFO [stderr] 1 | pub struct Problem {
Nov 28 13:43:23.759 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Nov 28 13:43:23.759 INFO [stderr] 
Nov 28 13:43:23.773 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
Nov 28 13:43:23.774 INFO [stderr] su: No module specific data is present
Nov 28 13:43:24.320 INFO running `"docker" "inspect" "d09bdcb825e5c30a2af1036bffc86bf568855bc1d5729a3033f8051e41e66fad"`
Nov 28 13:43:24.488 INFO running `"docker" "rm" "-f" "d09bdcb825e5c30a2af1036bffc86bf568855bc1d5729a3033f8051e41e66fad"`
Nov 28 13:43:24.676 INFO [stdout] d09bdcb825e5c30a2af1036bffc86bf568855bc1d5729a3033f8051e41e66fad