[INFO] cloning repository https://github.com/EthanTheMaster/sudoku_solver [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EthanTheMaster/sudoku_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthanTheMaster%2Fsudoku_solver"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthanTheMaster%2Fsudoku_solver'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] f0d269d3d954a9b6c82d6d0856dd0175544949f6 [INFO] testing EthanTheMaster/sudoku_solver against 1.44.0 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthanTheMaster%2Fsudoku_solver" "/workspace/builds/worker-4/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/EthanTheMaster/sudoku_solver 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/EthanTheMaster/sudoku_solver [INFO] finished tweaking git repo https://github.com/EthanTheMaster/sudoku_solver [INFO] tweaked toml for git repo https://github.com/EthanTheMaster/sudoku_solver written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/EthanTheMaster/sudoku_solver 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] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] ef8424ed1c33cb9cce6b9565a8a07da509ad0c11e0384eda3fcbe3bbb8566d33 [INFO] running `"docker" "start" "-a" "ef8424ed1c33cb9cce6b9565a8a07da509ad0c11e0384eda3fcbe3bbb8566d33"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling sudoku_solver v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `operation` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:96:32 [INFO] [stderr] | [INFO] [stderr] 96 | if let NodeType::Field(operation, column_header_id) = node_type { [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operation` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:100:40 [INFO] [stderr] | [INFO] [stderr] 100 | NodeType::ColumnHeader(ref mut constraint, ref mut size) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `operation` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:119:29 [INFO] [stderr] | [INFO] [stderr] 119 | NodeType::Field(operation, column_header_id) => { [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operation` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:127:36 [INFO] [stderr] | [INFO] [stderr] 127 | NodeType::ColumnHeader(constraint, size) => { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:226:44 [INFO] [stderr] | [INFO] [stderr] 226 | NodeType::ColumnHeader(constraint, ref mut size) => { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:269:44 [INFO] [stderr] | [INFO] [stderr] 269 | NodeType::ColumnHeader(constraint, ref mut size) => { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `idx` [INFO] [stderr] --> src/sudoku_solver_backtrack/mod.rs:35:24 [INFO] [stderr] | [INFO] [stderr] 35 | .filter(|&(idx, val)| { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_idx` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `val` [INFO] [stderr] --> src/sudoku_solver_backtrack/mod.rs:37:27 [INFO] [stderr] | [INFO] [stderr] 37 | }).map(|(idx, val)| { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/sudoku_solver_backtrack/mod.rs:34:13 [INFO] [stderr] | [INFO] [stderr] 34 | let mut blank_positions: Vec = self.board.iter().enumerate() [INFO] [stderr] | ----^^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 9 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.36s [INFO] running `"docker" "inspect" "ef8424ed1c33cb9cce6b9565a8a07da509ad0c11e0384eda3fcbe3bbb8566d33"` [INFO] running `"docker" "rm" "-f" "ef8424ed1c33cb9cce6b9565a8a07da509ad0c11e0384eda3fcbe3bbb8566d33"` [INFO] [stdout] ef8424ed1c33cb9cce6b9565a8a07da509ad0c11e0384eda3fcbe3bbb8566d33 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] b05900dd3643b12741104b8fde446ac61522bf0c5c640bf66d521812de55fb1e [INFO] running `"docker" "start" "-a" "b05900dd3643b12741104b8fde446ac61522bf0c5c640bf66d521812de55fb1e"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling sudoku_solver v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `operation` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:96:32 [INFO] [stderr] | [INFO] [stderr] 96 | if let NodeType::Field(operation, column_header_id) = node_type { [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operation` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:100:40 [INFO] [stderr] | [INFO] [stderr] 100 | NodeType::ColumnHeader(ref mut constraint, ref mut size) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `operation` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:119:29 [INFO] [stderr] | [INFO] [stderr] 119 | NodeType::Field(operation, column_header_id) => { [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operation` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:127:36 [INFO] [stderr] | [INFO] [stderr] 127 | NodeType::ColumnHeader(constraint, size) => { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:226:44 [INFO] [stderr] | [INFO] [stderr] 226 | NodeType::ColumnHeader(constraint, ref mut size) => { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:269:44 [INFO] [stderr] | [INFO] [stderr] 269 | NodeType::ColumnHeader(constraint, ref mut size) => { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `idx` [INFO] [stderr] --> src/sudoku_solver_backtrack/mod.rs:35:24 [INFO] [stderr] | [INFO] [stderr] 35 | .filter(|&(idx, val)| { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_idx` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `val` [INFO] [stderr] --> src/sudoku_solver_backtrack/mod.rs:37:27 [INFO] [stderr] | [INFO] [stderr] 37 | }).map(|(idx, val)| { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/sudoku_solver_backtrack/mod.rs:34:13 [INFO] [stderr] | [INFO] [stderr] 34 | let mut blank_positions: Vec = self.board.iter().enumerate() [INFO] [stderr] | ----^^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 9 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.89s [INFO] running `"docker" "inspect" "b05900dd3643b12741104b8fde446ac61522bf0c5c640bf66d521812de55fb1e"` [INFO] running `"docker" "rm" "-f" "b05900dd3643b12741104b8fde446ac61522bf0c5c640bf66d521812de55fb1e"` [INFO] [stdout] b05900dd3643b12741104b8fde446ac61522bf0c5c640bf66d521812de55fb1e [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 8620861506fac65ce252ab6bb2253f2d15363eca0bff1cec337af09814fe8786 [INFO] running `"docker" "start" "-a" "8620861506fac65ce252ab6bb2253f2d15363eca0bff1cec337af09814fe8786"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: unused variable: `operation` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:96:32 [INFO] [stderr] | [INFO] [stderr] 96 | if let NodeType::Field(operation, column_header_id) = node_type { [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operation` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:100:40 [INFO] [stderr] | [INFO] [stderr] 100 | NodeType::ColumnHeader(ref mut constraint, ref mut size) => { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `operation` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:119:29 [INFO] [stderr] | [INFO] [stderr] 119 | NodeType::Field(operation, column_header_id) => { [INFO] [stderr] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operation` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:127:36 [INFO] [stderr] | [INFO] [stderr] 127 | NodeType::ColumnHeader(constraint, size) => { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:226:44 [INFO] [stderr] | [INFO] [stderr] 226 | NodeType::ColumnHeader(constraint, ref mut size) => { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `constraint` [INFO] [stderr] --> src/sudoku_solver_dancinglinks/mod.rs:269:44 [INFO] [stderr] | [INFO] [stderr] 269 | NodeType::ColumnHeader(constraint, ref mut size) => { [INFO] [stderr] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `idx` [INFO] [stderr] --> src/sudoku_solver_backtrack/mod.rs:35:24 [INFO] [stderr] | [INFO] [stderr] 35 | .filter(|&(idx, val)| { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_idx` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `val` [INFO] [stderr] --> src/sudoku_solver_backtrack/mod.rs:37:27 [INFO] [stderr] | [INFO] [stderr] 37 | }).map(|(idx, val)| { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/sudoku_solver_backtrack/mod.rs:34:13 [INFO] [stderr] | [INFO] [stderr] 34 | let mut blank_positions: Vec = self.board.iter().enumerate() [INFO] [stderr] | ----^^^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 9 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [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] [stderr] Running /opt/rustwide/target/debug/deps/sudoku_solver-2407dc746ca6ade3 [INFO] running `"docker" "inspect" "8620861506fac65ce252ab6bb2253f2d15363eca0bff1cec337af09814fe8786"` [INFO] running `"docker" "rm" "-f" "8620861506fac65ce252ab6bb2253f2d15363eca0bff1cec337af09814fe8786"` [INFO] [stdout] 8620861506fac65ce252ab6bb2253f2d15363eca0bff1cec337af09814fe8786