Dec 11 11:36:44.195 INFO checking proudzhu/sudoku-norvig against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 11:36:44.195 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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"`
Dec 11 11:36:44.624 INFO [stdout] 21c668f732f12dfb763c335ac706b9a8f8cf9031fc55ba1927e3081e7386299a
Dec 11 11:36:44.626 INFO running `"docker" "start" "-a" "21c668f732f12dfb763c335ac706b9a8f8cf9031fc55ba1927e3081e7386299a"`
Dec 11 11:36:45.732 INFO [stderr] usermod: no changes
Dec 11 11:36:45.784 INFO [stderr]     Checking norvig v0.1.0 (/source)
Dec 11 11:36:46.200 INFO [stderr] warning: struct is never constructed: `Possible`
Dec 11 11:36:46.200 INFO [stderr]   --> src/main.rs:10:1
Dec 11 11:36:46.200 INFO [stderr]    |
Dec 11 11:36:46.200 INFO [stderr] 10 | struct Possible {
Dec 11 11:36:46.200 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 11 11:36:46.200 INFO [stderr]    |
Dec 11 11:36:46.200 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 11:36:46.200 INFO [stderr] 
Dec 11 11:36:46.200 INFO [stderr] warning: method is never used: `is_on`
Dec 11 11:36:46.200 INFO [stderr]   --> src/main.rs:15:5
Dec 11 11:36:46.200 INFO [stderr]    |
Dec 11 11:36:46.200 INFO [stderr] 15 |     fn is_on(&self, i: u8) -> bool {
Dec 11 11:36:46.200 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.200 INFO [stderr] 
Dec 11 11:36:46.200 INFO [stderr] warning: method is never used: `count`
Dec 11 11:36:46.200 INFO [stderr]   --> src/main.rs:19:5
Dec 11 11:36:46.200 INFO [stderr]    |
Dec 11 11:36:46.200 INFO [stderr] 19 |     fn count(&self) -> u8 {
Dec 11 11:36:46.200 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.200 INFO [stderr] 
Dec 11 11:36:46.200 INFO [stderr] warning: method is never used: `eliminate`
Dec 11 11:36:46.200 INFO [stderr]   --> src/main.rs:25:5
Dec 11 11:36:46.200 INFO [stderr]    |
Dec 11 11:36:46.201 INFO [stderr] 25 |     fn eliminate(&mut self, i: u8) {
Dec 11 11:36:46.201 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.201 INFO [stderr] 
Dec 11 11:36:46.201 INFO [stderr] warning: method is never used: `val`
Dec 11 11:36:46.201 INFO [stderr]   --> src/main.rs:29:5
Dec 11 11:36:46.201 INFO [stderr]    |
Dec 11 11:36:46.201 INFO [stderr] 29 |     fn val(&self) -> u8 {
Dec 11 11:36:46.201 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.201 INFO [stderr] 
Dec 11 11:36:46.204 INFO [stderr] warning: struct is never constructed: `Sudoku`
Dec 11 11:36:46.204 INFO [stderr]   --> src/main.rs:34:1
Dec 11 11:36:46.204 INFO [stderr]    |
Dec 11 11:36:46.204 INFO [stderr] 34 | struct Sudoku {
Dec 11 11:36:46.204 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 11 11:36:46.204 INFO [stderr] 
Dec 11 11:36:46.204 INFO [stderr] warning: method is never used: `assign`
Dec 11 11:36:46.204 INFO [stderr]   --> src/main.rs:41:5
Dec 11 11:36:46.204 INFO [stderr]    |
Dec 11 11:36:46.204 INFO [stderr] 41 |     fn assign(&mut self, grid: &[Vec<u8>], row: usize, col: usize, d: u8) -> bool {
Dec 11 11:36:46.204 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.204 INFO [stderr] 
Dec 11 11:36:46.204 INFO [stderr] warning: method is never used: `eliminate`
Dec 11 11:36:46.204 INFO [stderr]   --> src/main.rs:50:5
Dec 11 11:36:46.204 INFO [stderr]    |
Dec 11 11:36:46.204 INFO [stderr] 50 |     fn eliminate(&mut self, grid: &[Vec<u8>], row: usize, col: usize, d: u8) -> bool {
Dec 11 11:36:46.204 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.204 INFO [stderr] 
Dec 11 11:36:46.444 INFO [stderr] warning: struct is never constructed: `Possible`
Dec 11 11:36:46.444 INFO [stderr]   --> src/main.rs:10:1
Dec 11 11:36:46.444 INFO [stderr]    |
Dec 11 11:36:46.444 INFO [stderr] 10 | struct Possible {
Dec 11 11:36:46.444 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 11 11:36:46.444 INFO [stderr]    |
Dec 11 11:36:46.444 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 11:36:46.444 INFO [stderr] 
Dec 11 11:36:46.444 INFO [stderr] warning: method is never used: `is_on`
Dec 11 11:36:46.444 INFO [stderr]   --> src/main.rs:15:5
Dec 11 11:36:46.444 INFO [stderr]    |
Dec 11 11:36:46.444 INFO [stderr] 15 |     fn is_on(&self, i: u8) -> bool {
Dec 11 11:36:46.444 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.445 INFO [stderr] 
Dec 11 11:36:46.445 INFO [stderr] warning: method is never used: `count`
Dec 11 11:36:46.445 INFO [stderr]   --> src/main.rs:19:5
Dec 11 11:36:46.445 INFO [stderr]    |
Dec 11 11:36:46.445 INFO [stderr] 19 |     fn count(&self) -> u8 {
Dec 11 11:36:46.445 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.445 INFO [stderr] 
Dec 11 11:36:46.445 INFO [stderr] warning: method is never used: `eliminate`
Dec 11 11:36:46.445 INFO [stderr]   --> src/main.rs:25:5
Dec 11 11:36:46.445 INFO [stderr]    |
Dec 11 11:36:46.445 INFO [stderr] 25 |     fn eliminate(&mut self, i: u8) {
Dec 11 11:36:46.445 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.445 INFO [stderr] 
Dec 11 11:36:46.445 INFO [stderr] warning: method is never used: `val`
Dec 11 11:36:46.445 INFO [stderr]   --> src/main.rs:29:5
Dec 11 11:36:46.445 INFO [stderr]    |
Dec 11 11:36:46.445 INFO [stderr] 29 |     fn val(&self) -> u8 {
Dec 11 11:36:46.445 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.445 INFO [stderr] 
Dec 11 11:36:46.445 INFO [stderr] warning: struct is never constructed: `Sudoku`
Dec 11 11:36:46.445 INFO [stderr]   --> src/main.rs:34:1
Dec 11 11:36:46.445 INFO [stderr]    |
Dec 11 11:36:46.445 INFO [stderr] 34 | struct Sudoku {
Dec 11 11:36:46.445 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 11 11:36:46.445 INFO [stderr] 
Dec 11 11:36:46.445 INFO [stderr] warning: method is never used: `assign`
Dec 11 11:36:46.445 INFO [stderr]   --> src/main.rs:41:5
Dec 11 11:36:46.445 INFO [stderr]    |
Dec 11 11:36:46.445 INFO [stderr] 41 |     fn assign(&mut self, grid: &[Vec<u8>], row: usize, col: usize, d: u8) -> bool {
Dec 11 11:36:46.445 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.445 INFO [stderr] 
Dec 11 11:36:46.445 INFO [stderr] warning: method is never used: `eliminate`
Dec 11 11:36:46.445 INFO [stderr]   --> src/main.rs:50:5
Dec 11 11:36:46.445 INFO [stderr]    |
Dec 11 11:36:46.445 INFO [stderr] 50 |     fn eliminate(&mut self, grid: &[Vec<u8>], row: usize, col: usize, d: u8) -> bool {
Dec 11 11:36:46.445 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 11:36:46.445 INFO [stderr] 
Dec 11 11:36:46.473 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
Dec 11 11:36:46.488 INFO [stderr] su: No module specific data is present
Dec 11 11:36:47.658 INFO running `"docker" "inspect" "21c668f732f12dfb763c335ac706b9a8f8cf9031fc55ba1927e3081e7386299a"`
Dec 11 11:36:48.003 INFO running `"docker" "rm" "-f" "21c668f732f12dfb763c335ac706b9a8f8cf9031fc55ba1927e3081e7386299a"`
Dec 11 11:36:48.348 INFO [stdout] 21c668f732f12dfb763c335ac706b9a8f8cf9031fc55ba1927e3081e7386299a