[INFO] cloning repository Nalleyer/SudokuSolver [INFO] running `"git" "clone" "--bare" "git://github.com/Nalleyer/SudokuSolver.git" "work/cache/sources/gh/Nalleyer/SudokuSolver"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/Nalleyer/SudokuSolver'... [INFO] running `"git" "clone" "work/cache/sources/gh/Nalleyer/SudokuSolver" "work/ex/beta-1.37-6/sources/1.36.0/gh/Nalleyer/SudokuSolver"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Nalleyer/SudokuSolver'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/Nalleyer/SudokuSolver" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Nalleyer/SudokuSolver"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Nalleyer/SudokuSolver'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 4d0677b09b28157087276910f7ddd483eb583bd2 [INFO] sha for GitHub repo Nalleyer/SudokuSolver: 4d0677b09b28157087276910f7ddd483eb583bd2 [INFO] validating manifest of Nalleyer/SudokuSolver on toolchain 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of Nalleyer/SudokuSolver on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing Nalleyer/SudokuSolver [INFO] finished frobbing Nalleyer/SudokuSolver [INFO] frobbed toml for Nalleyer/SudokuSolver written to work/ex/beta-1.37-6/sources/1.36.0/gh/Nalleyer/SudokuSolver/Cargo.toml [INFO] started frobbing Nalleyer/SudokuSolver [INFO] finished frobbing Nalleyer/SudokuSolver [INFO] frobbed toml for Nalleyer/SudokuSolver written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Nalleyer/SudokuSolver/Cargo.toml [INFO] crate Nalleyer/SudokuSolver already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] testing Nalleyer/SudokuSolver against beta-2019-07-23 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Nalleyer/SudokuSolver:/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"` [INFO] [stdout] d89d2f1b15d61650e540a6244cfb9158512b6b9664fae3410c2e06f2e3c4075e [INFO] running `"docker" "start" "-a" "d89d2f1b15d61650e540a6244cfb9158512b6b9664fae3410c2e06f2e3c4075e"` [INFO] [stderr] Compiling sudoku_solver v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `View` [INFO] [stderr] --> src/solver.rs:1:36 [INFO] [stderr] | [INFO] [stderr] 1 | use crate::sudoku::{Sudoku, Value, View}; [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::HashSet` [INFO] [stderr] --> src/solver.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::collections::HashSet; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::iter::FromIterator` [INFO] [stderr] --> src/solver.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use std::iter::FromIterator; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Value` [INFO] [stderr] --> src/bin/main.rs:5:37 [INFO] [stderr] | [INFO] [stderr] 5 | use sudoku_solver::{Solver, Sudoku, Value}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.65s [INFO] running `"docker" "inspect" "d89d2f1b15d61650e540a6244cfb9158512b6b9664fae3410c2e06f2e3c4075e"` [INFO] running `"docker" "rm" "-f" "d89d2f1b15d61650e540a6244cfb9158512b6b9664fae3410c2e06f2e3c4075e"` [INFO] [stdout] d89d2f1b15d61650e540a6244cfb9158512b6b9664fae3410c2e06f2e3c4075e [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Nalleyer/SudokuSolver:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"` [INFO] [stdout] fb863ebdda7c38b428dba1dc1f12e7d21c904e85ac3ab0c7e4a97bfbe84d44f3 [INFO] running `"docker" "start" "-a" "fb863ebdda7c38b428dba1dc1f12e7d21c904e85ac3ab0c7e4a97bfbe84d44f3"` [INFO] [stderr] Compiling sudoku_solver v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `View` [INFO] [stderr] --> src/solver.rs:1:36 [INFO] [stderr] | [INFO] [stderr] 1 | use crate::sudoku::{Sudoku, Value, View}; [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::HashSet` [INFO] [stderr] --> src/solver.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::collections::HashSet; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::iter::FromIterator` [INFO] [stderr] --> src/solver.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use std::iter::FromIterator; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Value` [INFO] [stderr] --> src/bin/main.rs:5:37 [INFO] [stderr] | [INFO] [stderr] 5 | use sudoku_solver::{Solver, Sudoku, Value}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/solver.rs:164:13 [INFO] [stderr] | [INFO] [stderr] 164 | let mut sdk = Sudoku::new(&s_str).unwrap(); [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: variable does not need to be mutable [INFO] [stderr] --> src/solver.rs:165:13 [INFO] [stderr] | [INFO] [stderr] 165 | let mut sdk2 = Sudoku::new(&s_str).unwrap(); [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.98s [INFO] running `"docker" "inspect" "fb863ebdda7c38b428dba1dc1f12e7d21c904e85ac3ab0c7e4a97bfbe84d44f3"` [INFO] running `"docker" "rm" "-f" "fb863ebdda7c38b428dba1dc1f12e7d21c904e85ac3ab0c7e4a97bfbe84d44f3"` [INFO] [stdout] fb863ebdda7c38b428dba1dc1f12e7d21c904e85ac3ab0c7e4a97bfbe84d44f3 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Nalleyer/SudokuSolver:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen"` [INFO] [stdout] fd17691165aeac04ec3b428bbc17634655573b312ca2c119953e8532ef84e65f [INFO] running `"docker" "start" "-a" "fd17691165aeac04ec3b428bbc17634655573b312ca2c119953e8532ef84e65f"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/sudoku_solver-1a243a9ab4f6c835 [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test solver::test::no_unknown_is_finished ... ok [INFO] [stdout] test sudoku::test::fill_function ... ok [INFO] [stdout] test solver::test::same_sudoku ... ok [INFO] [stderr] Running /opt/crater/target/debug/deps/main-78f242b075c5c513 [INFO] [stdout] [INFO] [stderr] Doc-tests sudoku_solver [INFO] [stdout] test result: ok. 3 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] [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" "fd17691165aeac04ec3b428bbc17634655573b312ca2c119953e8532ef84e65f"` [INFO] running `"docker" "rm" "-f" "fd17691165aeac04ec3b428bbc17634655573b312ca2c119953e8532ef84e65f"` [INFO] [stdout] fd17691165aeac04ec3b428bbc17634655573b312ca2c119953e8532ef84e65f