[INFO] updating cached repository ruggeri/sudoku_solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ruggeri/sudoku_solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ruggeri/sudoku_solver" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/ruggeri/sudoku_solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/ruggeri/sudoku_solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ruggeri/sudoku_solver" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ruggeri/sudoku_solver"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ruggeri/sudoku_solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d6f77304a6366925acd849c5f564446cb7245b76
[INFO] sha for GitHub repo ruggeri/sudoku_solver: d6f77304a6366925acd849c5f564446cb7245b76
[INFO] validating manifest of ruggeri/sudoku_solver on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ruggeri/sudoku_solver on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ruggeri/sudoku_solver
[INFO] finished frobbing ruggeri/sudoku_solver
[INFO] frobbed toml for ruggeri/sudoku_solver written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/ruggeri/sudoku_solver/Cargo.toml
[INFO] started frobbing ruggeri/sudoku_solver
[INFO] finished frobbing ruggeri/sudoku_solver
[INFO] frobbed toml for ruggeri/sudoku_solver written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ruggeri/sudoku_solver/Cargo.toml
[INFO] crate ruggeri/sudoku_solver has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ruggeri/sudoku_solver against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ruggeri/sudoku_solver:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 3d278e719dbd6996345c5b47770e70ec19c741a9e567eec8cfe95c26d90e1f71
[INFO] running `"docker" "start" "-a" "3d278e719dbd6996345c5b47770e70ec19c741a9e567eec8cfe95c26d90e1f71"`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling sudoku_solving v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unknown lint: `if_same_then_else`
[INFO] [stderr]   --> src/checker/grid_checker.rs:68:11
[INFO] [stderr]    |
[INFO] [stderr] 68 |   #[allow(if_same_then_else)]
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unknown_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `if_same_then_else`
[INFO] [stderr]    --> src/checker/grid_checker.rs:128:11
[INFO] [stderr]     |
[INFO] [stderr] 128 |   #[allow(if_same_then_else)]
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `if_same_then_else`
[INFO] [stderr]    --> src/checker/grid_checker.rs:177:11
[INFO] [stderr]     |
[INFO] [stderr] 177 |   #[allow(if_same_then_else)]
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `if_same_then_else`
[INFO] [stderr]   --> src/checker/group_checker.rs:42:11
[INFO] [stderr]    |
[INFO] [stderr] 42 |   #[allow(if_same_then_else, needless_bool)]
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `needless_bool`
[INFO] [stderr]   --> src/checker/group_checker.rs:42:30
[INFO] [stderr]    |
[INFO] [stderr] 42 |   #[allow(if_same_then_else, needless_bool)]
[INFO] [stderr]    |                              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `SudokuChoice`, `SudokuPosition`, `SudokuValue`
[INFO] [stderr]  --> src/main.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 |   core::{SudokuChoice, SudokuGrid, SudokuPosition, SudokuValue},
[INFO] [stderr]   |          ^^^^^^^^^^^^              ^^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.26s
[INFO] running `"docker" "inspect" "3d278e719dbd6996345c5b47770e70ec19c741a9e567eec8cfe95c26d90e1f71"`
[INFO] running `"docker" "rm" "-f" "3d278e719dbd6996345c5b47770e70ec19c741a9e567eec8cfe95c26d90e1f71"`
[INFO] [stdout] 3d278e719dbd6996345c5b47770e70ec19c741a9e567eec8cfe95c26d90e1f71
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ruggeri/sudoku_solver:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 69611993c076c69fe7e1d3b4b8a933a6ea0656bb51080e55f9b43b27b4b70c65
[INFO] running `"docker" "start" "-a" "69611993c076c69fe7e1d3b4b8a933a6ea0656bb51080e55f9b43b27b4b70c65"`
[INFO] [stderr]    Compiling sudoku_solving v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unknown lint: `if_same_then_else`
[INFO] [stderr]   --> src/checker/grid_checker.rs:68:11
[INFO] [stderr]    |
[INFO] [stderr] 68 |   #[allow(if_same_then_else)]
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unknown_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `if_same_then_else`
[INFO] [stderr]    --> src/checker/grid_checker.rs:128:11
[INFO] [stderr]     |
[INFO] [stderr] 128 |   #[allow(if_same_then_else)]
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `if_same_then_else`
[INFO] [stderr]    --> src/checker/grid_checker.rs:177:11
[INFO] [stderr]     |
[INFO] [stderr] 177 |   #[allow(if_same_then_else)]
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `if_same_then_else`
[INFO] [stderr]   --> src/checker/group_checker.rs:42:11
[INFO] [stderr]    |
[INFO] [stderr] 42 |   #[allow(if_same_then_else, needless_bool)]
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `needless_bool`
[INFO] [stderr]   --> src/checker/group_checker.rs:42:30
[INFO] [stderr]    |
[INFO] [stderr] 42 |   #[allow(if_same_then_else, needless_bool)]
[INFO] [stderr]    |                              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `SudokuChoice`, `SudokuPosition`, `SudokuValue`
[INFO] [stderr]  --> src/main.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 |   core::{SudokuChoice, SudokuGrid, SudokuPosition, SudokuValue},
[INFO] [stderr]   |          ^^^^^^^^^^^^              ^^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `"docker" "inspect" "69611993c076c69fe7e1d3b4b8a933a6ea0656bb51080e55f9b43b27b4b70c65"`
[INFO] running `"docker" "rm" "-f" "69611993c076c69fe7e1d3b4b8a933a6ea0656bb51080e55f9b43b27b4b70c65"`
[INFO] [stdout] 69611993c076c69fe7e1d3b4b8a933a6ea0656bb51080e55f9b43b27b4b70c65
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ruggeri/sudoku_solver:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] 4062b7c11fbc260b82de28f934f97d29e8cf3a568a2f642cfa19eed1da73a241
[INFO] running `"docker" "start" "-a" "4062b7c11fbc260b82de28f934f97d29e8cf3a568a2f642cfa19eed1da73a241"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sudoku_solving-a6bc9fa610f00ef2
[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/crater/target/debug/deps/sudoku_solving-dce1105c231a4efc
[INFO] [stderr]    Doc-tests sudoku_solving
[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] [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" "4062b7c11fbc260b82de28f934f97d29e8cf3a568a2f642cfa19eed1da73a241"`
[INFO] running `"docker" "rm" "-f" "4062b7c11fbc260b82de28f934f97d29e8cf3a568a2f642cfa19eed1da73a241"`
[INFO] [stdout] 4062b7c11fbc260b82de28f934f97d29e8cf3a568a2f642cfa19eed1da73a241