[INFO] updating cached repository https://github.com/PatrykStronski/sudoku
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 952b894501e0b359a1d47cef7375735cc23a6c8f
[INFO] testing PatrykStronski/sudoku against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPatrykStronski%2Fsudoku" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PatrykStronski/sudoku on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/PatrykStronski/sudoku
[INFO] finished tweaking git repo https://github.com/PatrykStronski/sudoku
[INFO] tweaked toml for git repo https://github.com/PatrykStronski/sudoku written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/PatrykStronski/sudoku already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 55d38e28451f92e1e0e351cc0135ccc110a167b6a07812af19315a079ebffa64
[INFO] running `"docker" "start" "-a" "55d38e28451f92e1e0e351cc0135ccc110a167b6a07812af19315a079ebffa64"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `print_board`
[INFO] [stderr]   --> src/sudoku.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn print_board(&self, board: Vec<i16>) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_current_board`
[INFO] [stderr]   --> src/sudoku.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn print_current_board(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_errors_with_solution`
[INFO] [stderr]   --> src/sudoku.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn get_errors_with_solution(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_quantity_empty_fields`
[INFO] [stderr]    --> src/sudoku.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     pub fn get_quantity_empty_fields(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.03s
[INFO] running `"docker" "inspect" "55d38e28451f92e1e0e351cc0135ccc110a167b6a07812af19315a079ebffa64"`
[INFO] running `"docker" "rm" "-f" "55d38e28451f92e1e0e351cc0135ccc110a167b6a07812af19315a079ebffa64"`
[INFO] [stdout] 55d38e28451f92e1e0e351cc0135ccc110a167b6a07812af19315a079ebffa64
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 84874362e83ca700987f265bbaaefa9243cb792d308206f6dac6905db0944fd6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "84874362e83ca700987f265bbaaefa9243cb792d308206f6dac6905db0944fd6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `print_board`
[INFO] [stderr]   --> src/sudoku.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn print_board(&self, board: Vec<i16>) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_current_board`
[INFO] [stderr]   --> src/sudoku.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn print_current_board(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_errors_with_solution`
[INFO] [stderr]   --> src/sudoku.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn get_errors_with_solution(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_quantity_empty_fields`
[INFO] [stderr]    --> src/sudoku.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     pub fn get_quantity_empty_fields(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `"docker" "inspect" "84874362e83ca700987f265bbaaefa9243cb792d308206f6dac6905db0944fd6"`
[INFO] running `"docker" "rm" "-f" "84874362e83ca700987f265bbaaefa9243cb792d308206f6dac6905db0944fd6"`
[INFO] [stdout] 84874362e83ca700987f265bbaaefa9243cb792d308206f6dac6905db0944fd6
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 78dd2e87f8a0206d6f7d002d006a8459742acd7eb2c2e1036ccc8bd9604b8725
[INFO] running `"docker" "start" "-a" "78dd2e87f8a0206d6f7d002d006a8459742acd7eb2c2e1036ccc8bd9604b8725"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: method is never used: `print_board`
[INFO] [stderr]   --> src/sudoku.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn print_board(&self, board: Vec<i16>) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_current_board`
[INFO] [stderr]   --> src/sudoku.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn print_current_board(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_errors_with_solution`
[INFO] [stderr]   --> src/sudoku.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn get_errors_with_solution(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_quantity_empty_fields`
[INFO] [stderr]    --> src/sudoku.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     pub fn get_quantity_empty_fields(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/sudoku-828719b1d287dc0d
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "78dd2e87f8a0206d6f7d002d006a8459742acd7eb2c2e1036ccc8bd9604b8725"`
[INFO] running `"docker" "rm" "-f" "78dd2e87f8a0206d6f7d002d006a8459742acd7eb2c2e1036ccc8bd9604b8725"`
[INFO] [stdout] 78dd2e87f8a0206d6f7d002d006a8459742acd7eb2c2e1036ccc8bd9604b8725