[INFO] updating cached repository maurocordioli/rs-sudoku
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/maurocordioli/rs-sudoku
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/maurocordioli/rs-sudoku" "work/ex/beta-1.38-1/sources/1.37.0/gh/maurocordioli/rs-sudoku"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/maurocordioli/rs-sudoku'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/maurocordioli/rs-sudoku" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maurocordioli/rs-sudoku"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maurocordioli/rs-sudoku'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f51339a2bb6dd294e4d98a8e5d15697af28ec9b7
[INFO] sha for GitHub repo maurocordioli/rs-sudoku: f51339a2bb6dd294e4d98a8e5d15697af28ec9b7
[INFO] validating manifest of maurocordioli/rs-sudoku on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of maurocordioli/rs-sudoku on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing maurocordioli/rs-sudoku
[INFO] finished frobbing maurocordioli/rs-sudoku
[INFO] frobbed toml for maurocordioli/rs-sudoku written to work/ex/beta-1.38-1/sources/1.37.0/gh/maurocordioli/rs-sudoku/Cargo.toml
[INFO] started frobbing maurocordioli/rs-sudoku
[INFO] finished frobbing maurocordioli/rs-sudoku
[INFO] frobbed toml for maurocordioli/rs-sudoku written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/maurocordioli/rs-sudoku/Cargo.toml
[INFO] crate maurocordioli/rs-sudoku already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing maurocordioli/rs-sudoku against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/maurocordioli/rs-sudoku:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 049d17af7951e8c31d2a8d24f4d911aefa67f19ef2ffc5a6a64342ab75d92e3a
[INFO] running `"docker" "start" "-a" "049d17af7951e8c31d2a8d24f4d911aefa67f19ef2ffc5a6a64342ab75d92e3a"`
[INFO] [stderr]    Compiling rssudoku v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:305:2
[INFO] [stderr]     |
[INFO] [stderr] 305 |     ass
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `"docker" "inspect" "049d17af7951e8c31d2a8d24f4d911aefa67f19ef2ffc5a6a64342ab75d92e3a"`
[INFO] running `"docker" "rm" "-f" "049d17af7951e8c31d2a8d24f4d911aefa67f19ef2ffc5a6a64342ab75d92e3a"`
[INFO] [stdout] 049d17af7951e8c31d2a8d24f4d911aefa67f19ef2ffc5a6a64342ab75d92e3a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/maurocordioli/rs-sudoku:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] eb0c05e234cf726a5d0c6c4b581cc61e0bfeb8172b29c417fe158b1d1f9d45df
[INFO] running `"docker" "start" "-a" "eb0c05e234cf726a5d0c6c4b581cc61e0bfeb8172b29c417fe158b1d1f9d45df"`
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling csv v1.0.7
[INFO] [stderr]    Compiling tinytemplate v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stderr]    Compiling rssudoku v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:305:2
[INFO] [stderr]     |
[INFO] [stderr] 305 |     ass
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.08s
[INFO] running `"docker" "inspect" "eb0c05e234cf726a5d0c6c4b581cc61e0bfeb8172b29c417fe158b1d1f9d45df"`
[INFO] running `"docker" "rm" "-f" "eb0c05e234cf726a5d0c6c4b581cc61e0bfeb8172b29c417fe158b1d1f9d45df"`
[INFO] [stdout] eb0c05e234cf726a5d0c6c4b581cc61e0bfeb8172b29c417fe158b1d1f9d45df
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/maurocordioli/rs-sudoku:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 1218d74fe59efd0a03506c54d694dc0fe2a582688746039c072e4fd2b842a8b7
[INFO] running `"docker" "start" "-a" "1218d74fe59efd0a03506c54d694dc0fe2a582688746039c072e4fd2b842a8b7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rssudoku-864f4666848b0a84
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test_isvalid ... ok
[INFO] [stdout] test test_isvalid_block ... ok
[INFO] [stdout] test test_alternatives ... ok
[INFO] [stdout] test test_make_assumptions ... ok
[INFO] [stdout] test test_solve ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rssudoku-edd82fd33994a149
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rssudoku
[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 1 test
[INFO] [stdout] test src/lib.rs - Board::solve (line 343) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1218d74fe59efd0a03506c54d694dc0fe2a582688746039c072e4fd2b842a8b7"`
[INFO] running `"docker" "rm" "-f" "1218d74fe59efd0a03506c54d694dc0fe2a582688746039c072e4fd2b842a8b7"`
[INFO] [stdout] 1218d74fe59efd0a03506c54d694dc0fe2a582688746039c072e4fd2b842a8b7