Dec 18 07:46:32.558 INFO checking ErikPartridge/sudoku-generator against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 07:46:32.558 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/ErikPartridge/sudoku-generator:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 07:46:32.696 INFO [stdout] ea2143e73a09702066201f77031a1afa6edea2f2c5c78a37dc3b5c92d9111f55
Dec 18 07:46:32.698 INFO running `"docker" "start" "-a" "ea2143e73a09702066201f77031a1afa6edea2f2c5c78a37dc3b5c92d9111f55"`
Dec 18 07:46:33.309 INFO [stderr]     Checking sudoku-generator v0.1.0 (/opt/crater/workdir)
Dec 18 07:46:33.484 INFO [stderr] warning: unused import: `freedom::Freedom`
Dec 18 07:46:33.484 INFO [stderr]  --> src/main.rs:3:5
Dec 18 07:46:33.484 INFO [stderr]   |
Dec 18 07:46:33.484 INFO [stderr] 3 | use freedom::Freedom;
Dec 18 07:46:33.484 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 18 07:46:33.484 INFO [stderr]   |
Dec 18 07:46:33.484 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 07:46:33.484 INFO [stderr] 
Dec 18 07:46:33.484 INFO [stderr] warning: unused import: `problem::Problem`
Dec 18 07:46:33.484 INFO [stderr]  --> src/main.rs:4:5
Dec 18 07:46:33.484 INFO [stderr]   |
Dec 18 07:46:33.484 INFO [stderr] 4 | use problem::Problem;
Dec 18 07:46:33.484 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 18 07:46:33.484 INFO [stderr] 
Dec 18 07:46:33.500 INFO [stderr] warning: unused import: `freedom::Freedom`
Dec 18 07:46:33.500 INFO [stderr]  --> src/main.rs:3:5
Dec 18 07:46:33.500 INFO [stderr]   |
Dec 18 07:46:33.500 INFO [stderr] 3 | use freedom::Freedom;
Dec 18 07:46:33.500 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 18 07:46:33.500 INFO [stderr]   |
Dec 18 07:46:33.500 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 07:46:33.500 INFO [stderr] 
Dec 18 07:46:33.500 INFO [stderr] warning: unused import: `problem::Problem`
Dec 18 07:46:33.500 INFO [stderr]  --> src/main.rs:4:5
Dec 18 07:46:33.500 INFO [stderr]   |
Dec 18 07:46:33.500 INFO [stderr] 4 | use problem::Problem;
Dec 18 07:46:33.500 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 18 07:46:33.500 INFO [stderr] 
Dec 18 07:46:33.524 INFO [stderr] warning: unused variable: `j`
Dec 18 07:46:33.524 INFO [stderr]   --> src/freedom.rs:28:9
Dec 18 07:46:33.524 INFO [stderr]    |
Dec 18 07:46:33.524 INFO [stderr] 28 |     for j in 0..3 {
Dec 18 07:46:33.524 INFO [stderr]    |         ^ help: consider using `_j` instead
Dec 18 07:46:33.524 INFO [stderr]    |
Dec 18 07:46:33.524 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 07:46:33.524 INFO [stderr] 
Dec 18 07:46:33.532 INFO [stderr] warning: constant item is never used: `ORDER`
Dec 18 07:46:33.532 INFO [stderr]  --> src/freedom.rs:1:1
Dec 18 07:46:33.532 INFO [stderr]   |
Dec 18 07:46:33.532 INFO [stderr] 1 | const ORDER: u8 = 3;
Dec 18 07:46:33.532 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.532 INFO [stderr]   |
Dec 18 07:46:33.532 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 07:46:33.532 INFO [stderr] 
Dec 18 07:46:33.532 INFO [stderr] warning: constant item is never used: `DIM`
Dec 18 07:46:33.532 INFO [stderr]  --> src/freedom.rs:2:1
Dec 18 07:46:33.532 INFO [stderr]   |
Dec 18 07:46:33.532 INFO [stderr] 2 | const DIM: u8 = ORDER * ORDER;
Dec 18 07:46:33.532 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.532 INFO [stderr] 
Dec 18 07:46:33.532 INFO [stderr] warning: constant item is never used: `ELEMENTS`
Dec 18 07:46:33.532 INFO [stderr]  --> src/freedom.rs:3:1
Dec 18 07:46:33.532 INFO [stderr]   |
Dec 18 07:46:33.532 INFO [stderr] 3 | const ELEMENTS: u8 = DIM * DIM;
Dec 18 07:46:33.532 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.532 INFO [stderr] 
Dec 18 07:46:33.532 INFO [stderr] warning: constant item is never used: `ALL_VALUES`
Dec 18 07:46:33.532 INFO [stderr]  --> src/freedom.rs:4:1
Dec 18 07:46:33.532 INFO [stderr]   |
Dec 18 07:46:33.532 INFO [stderr] 4 | const ALL_VALUES: u16 = (1 << DIM) - 1;
Dec 18 07:46:33.532 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.532 INFO [stderr] 
Dec 18 07:46:33.532 INFO [stderr] warning: struct is never constructed: `Freedom`
Dec 18 07:46:33.532 INFO [stderr]  --> src/freedom.rs:7:1
Dec 18 07:46:33.532 INFO [stderr]   |
Dec 18 07:46:33.532 INFO [stderr] 7 | pub struct Freedom {
Dec 18 07:46:33.532 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.533 INFO [stderr] 
Dec 18 07:46:33.533 INFO [stderr] warning: function is never used: `singleton`
Dec 18 07:46:33.533 INFO [stderr]   --> src/freedom.rs:11:1
Dec 18 07:46:33.533 INFO [stderr]    |
Dec 18 07:46:33.533 INFO [stderr] 11 | fn singleton(v: u16) -> u16 {
Dec 18 07:46:33.533 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.533 INFO [stderr] 
Dec 18 07:46:33.533 INFO [stderr] warning: function is never used: `freedom_eliminate`
Dec 18 07:46:33.533 INFO [stderr]   --> src/freedom.rs:16:1
Dec 18 07:46:33.533 INFO [stderr]    |
Dec 18 07:46:33.533 INFO [stderr] 16 | fn freedom_eliminate(f: &Freedom, col: u16, row: u16, value: u16) -> Freedom {
Dec 18 07:46:33.533 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.533 INFO [stderr] 
Dec 18 07:46:33.533 INFO [stderr] warning: function is never used: `create_freedom`
Dec 18 07:46:33.533 INFO [stderr]   --> src/freedom.rs:38:1
Dec 18 07:46:33.533 INFO [stderr]    |
Dec 18 07:46:33.533 INFO [stderr] 38 | fn create_freedom(problem: &Problem) -> Freedom {
Dec 18 07:46:33.533 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.533 INFO [stderr] 
Dec 18 07:46:33.533 INFO [stderr] warning: function is never used: `sanity_check`
Dec 18 07:46:33.533 INFO [stderr]   --> src/freedom.rs:52:1
Dec 18 07:46:33.533 INFO [stderr]    |
Dec 18 07:46:33.533 INFO [stderr] 52 | fn sanity_check(problem: &Problem, freedom: &Freedom) -> bool {
Dec 18 07:46:33.533 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.533 INFO [stderr] 
Dec 18 07:46:33.533 INFO [stderr] warning: function is never used: `search_least_free`
Dec 18 07:46:33.533 INFO [stderr]   --> src/freedom.rs:63:1
Dec 18 07:46:33.533 INFO [stderr]    |
Dec 18 07:46:33.533 INFO [stderr] 63 | fn search_least_free(problem: &Problem, freedom: &Freedom) -> u16 {
Dec 18 07:46:33.533 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.533 INFO [stderr] 
Dec 18 07:46:33.533 INFO [stderr] warning: struct is never constructed: `Problem`
Dec 18 07:46:33.533 INFO [stderr]  --> src/problem.rs:1:1
Dec 18 07:46:33.533 INFO [stderr]   |
Dec 18 07:46:33.533 INFO [stderr] 1 | pub struct Problem {
Dec 18 07:46:33.533 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.533 INFO [stderr] 
Dec 18 07:46:33.544 INFO [stderr] warning: unused variable: `j`
Dec 18 07:46:33.544 INFO [stderr]   --> src/freedom.rs:28:9
Dec 18 07:46:33.544 INFO [stderr]    |
Dec 18 07:46:33.544 INFO [stderr] 28 |     for j in 0..3 {
Dec 18 07:46:33.544 INFO [stderr]    |         ^ help: consider using `_j` instead
Dec 18 07:46:33.544 INFO [stderr]    |
Dec 18 07:46:33.544 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 07:46:33.544 INFO [stderr] 
Dec 18 07:46:33.552 INFO [stderr] warning: constant item is never used: `ORDER`
Dec 18 07:46:33.552 INFO [stderr]  --> src/freedom.rs:1:1
Dec 18 07:46:33.552 INFO [stderr]   |
Dec 18 07:46:33.552 INFO [stderr] 1 | const ORDER: u8 = 3;
Dec 18 07:46:33.552 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.552 INFO [stderr]   |
Dec 18 07:46:33.552 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 07:46:33.552 INFO [stderr] 
Dec 18 07:46:33.552 INFO [stderr] warning: constant item is never used: `DIM`
Dec 18 07:46:33.552 INFO [stderr]  --> src/freedom.rs:2:1
Dec 18 07:46:33.552 INFO [stderr]   |
Dec 18 07:46:33.552 INFO [stderr] 2 | const DIM: u8 = ORDER * ORDER;
Dec 18 07:46:33.552 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.552 INFO [stderr] 
Dec 18 07:46:33.552 INFO [stderr] warning: constant item is never used: `ELEMENTS`
Dec 18 07:46:33.552 INFO [stderr]  --> src/freedom.rs:3:1
Dec 18 07:46:33.552 INFO [stderr]   |
Dec 18 07:46:33.552 INFO [stderr] 3 | const ELEMENTS: u8 = DIM * DIM;
Dec 18 07:46:33.552 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.552 INFO [stderr] 
Dec 18 07:46:33.552 INFO [stderr] warning: constant item is never used: `ALL_VALUES`
Dec 18 07:46:33.552 INFO [stderr]  --> src/freedom.rs:4:1
Dec 18 07:46:33.552 INFO [stderr]   |
Dec 18 07:46:33.552 INFO [stderr] 4 | const ALL_VALUES: u16 = (1 << DIM) - 1;
Dec 18 07:46:33.552 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.552 INFO [stderr] 
Dec 18 07:46:33.552 INFO [stderr] warning: struct is never constructed: `Freedom`
Dec 18 07:46:33.552 INFO [stderr]  --> src/freedom.rs:7:1
Dec 18 07:46:33.552 INFO [stderr]   |
Dec 18 07:46:33.552 INFO [stderr] 7 | pub struct Freedom {
Dec 18 07:46:33.552 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.552 INFO [stderr] 
Dec 18 07:46:33.552 INFO [stderr] warning: function is never used: `singleton`
Dec 18 07:46:33.552 INFO [stderr]   --> src/freedom.rs:11:1
Dec 18 07:46:33.552 INFO [stderr]    |
Dec 18 07:46:33.552 INFO [stderr] 11 | fn singleton(v: u16) -> u16 {
Dec 18 07:46:33.552 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.552 INFO [stderr] 
Dec 18 07:46:33.552 INFO [stderr] warning: function is never used: `freedom_eliminate`
Dec 18 07:46:33.552 INFO [stderr]   --> src/freedom.rs:16:1
Dec 18 07:46:33.553 INFO [stderr]    |
Dec 18 07:46:33.553 INFO [stderr] 16 | fn freedom_eliminate(f: &Freedom, col: u16, row: u16, value: u16) -> Freedom {
Dec 18 07:46:33.553 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.553 INFO [stderr] 
Dec 18 07:46:33.553 INFO [stderr] warning: function is never used: `create_freedom`
Dec 18 07:46:33.553 INFO [stderr]   --> src/freedom.rs:38:1
Dec 18 07:46:33.553 INFO [stderr]    |
Dec 18 07:46:33.553 INFO [stderr] 38 | fn create_freedom(problem: &Problem) -> Freedom {
Dec 18 07:46:33.553 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.553 INFO [stderr] 
Dec 18 07:46:33.553 INFO [stderr] warning: function is never used: `sanity_check`
Dec 18 07:46:33.553 INFO [stderr]   --> src/freedom.rs:52:1
Dec 18 07:46:33.553 INFO [stderr]    |
Dec 18 07:46:33.553 INFO [stderr] 52 | fn sanity_check(problem: &Problem, freedom: &Freedom) -> bool {
Dec 18 07:46:33.553 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.553 INFO [stderr] 
Dec 18 07:46:33.553 INFO [stderr] warning: function is never used: `search_least_free`
Dec 18 07:46:33.553 INFO [stderr]   --> src/freedom.rs:63:1
Dec 18 07:46:33.553 INFO [stderr]    |
Dec 18 07:46:33.553 INFO [stderr] 63 | fn search_least_free(problem: &Problem, freedom: &Freedom) -> u16 {
Dec 18 07:46:33.553 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.553 INFO [stderr] 
Dec 18 07:46:33.553 INFO [stderr] warning: struct is never constructed: `Problem`
Dec 18 07:46:33.553 INFO [stderr]  --> src/problem.rs:1:1
Dec 18 07:46:33.553 INFO [stderr]   |
Dec 18 07:46:33.553 INFO [stderr] 1 | pub struct Problem {
Dec 18 07:46:33.553 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 18 07:46:33.553 INFO [stderr] 
Dec 18 07:46:33.567 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
Dec 18 07:46:33.902 INFO running `"docker" "inspect" "ea2143e73a09702066201f77031a1afa6edea2f2c5c78a37dc3b5c92d9111f55"`
Dec 18 07:46:34.014 INFO running `"docker" "rm" "-f" "ea2143e73a09702066201f77031a1afa6edea2f2c5c78a37dc3b5c92d9111f55"`
Dec 18 07:46:34.178 INFO [stdout] ea2143e73a09702066201f77031a1afa6edea2f2c5c78a37dc3b5c92d9111f55