[INFO] cloning repository maurocordioli/rs-sudoku
[INFO] running `"git" "clone" "--bare" "git://github.com/maurocordioli/rs-sudoku.git" "work/cache/sources/gh/maurocordioli/rs-sudoku"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/maurocordioli/rs-sudoku'...
[INFO] running `"git" "clone" "work/cache/sources/gh/maurocordioli/rs-sudoku" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maurocordioli/rs-sudoku"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maurocordioli/rs-sudoku'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/maurocordioli/rs-sudoku" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maurocordioli/rs-sudoku"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/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 master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of maurocordioli/rs-sudoku on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "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/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/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/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maurocordioli/rs-sudoku/Cargo.toml
[INFO] crate maurocordioli/rs-sudoku already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking maurocordioli/rs-sudoku against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-5/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maurocordioli/rs-sudoku:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 63a176e6046b94a2a2ac1f491e3e83d12334c5f75651298f6bc28ef506273168
[INFO] running `"docker" "start" "-a" "63a176e6046b94a2a2ac1f491e3e83d12334c5f75651298f6bc28ef506273168"`
[INFO] [stderr]     Checking rssudoku v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking memchr v2.2.0
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking criterion-plot v0.3.1
[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]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking csv v1.0.7
[INFO] [stderr]     Checking tinytemplate v1.0.1
[INFO] [stderr]     Checking criterion v0.2.11
[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] warning: unused import: `criterion::black_box`
[INFO] [stderr]  --> src/my_benchmarks.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use criterion::black_box;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/my_benchmarks.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 |        b.read_from("800000000003600000070090200050007000000045700000100030001000068008500010090000400".as_bytes());
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.00s
[INFO] running `"docker" "inspect" "63a176e6046b94a2a2ac1f491e3e83d12334c5f75651298f6bc28ef506273168"`
[INFO] running `"docker" "rm" "-f" "63a176e6046b94a2a2ac1f491e3e83d12334c5f75651298f6bc28ef506273168"`
[INFO] [stdout] 63a176e6046b94a2a2ac1f491e3e83d12334c5f75651298f6bc28ef506273168