[INFO] updating cached repository https://github.com/maurocordioli/rs-sudoku
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f51339a2bb6dd294e4d98a8e5d15697af28ec9b7
[INFO] testing maurocordioli/rs-sudoku against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaurocordioli%2Frs-sudoku" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maurocordioli/rs-sudoku on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/maurocordioli/rs-sudoku
[INFO] finished tweaking git repo https://github.com/maurocordioli/rs-sudoku
[INFO] tweaked toml for git repo https://github.com/maurocordioli/rs-sudoku written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/maurocordioli/rs-sudoku already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 28dacf190c5b222975290e4c3f07c305445c5ce73f8f8ae7006456e5004e0a5e
[INFO] running `"docker" "start" "-a" "28dacf190c5b222975290e4c3f07c305445c5ce73f8f8ae7006456e5004e0a5e"`
[INFO] [stderr]    Compiling rssudoku v0.1.0 (/opt/rustwide/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 1.59s
[INFO] running `"docker" "inspect" "28dacf190c5b222975290e4c3f07c305445c5ce73f8f8ae7006456e5004e0a5e"`
[INFO] running `"docker" "rm" "-f" "28dacf190c5b222975290e4c3f07c305445c5ce73f8f8ae7006456e5004e0a5e"`
[INFO] [stdout] 28dacf190c5b222975290e4c3f07c305445c5ce73f8f8ae7006456e5004e0a5e
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5c5022650e96cb32f5cebb29e38caa2ed9dd03bc2a1d4aada68e1cd42f2f6d9d
[INFO] running `"docker" "start" "-a" "5c5022650e96cb32f5cebb29e38caa2ed9dd03bc2a1d4aada68e1cd42f2f6d9d"`
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling criterion-plot v0.3.1
[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/rustwide/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 16.16s
[INFO] running `"docker" "inspect" "5c5022650e96cb32f5cebb29e38caa2ed9dd03bc2a1d4aada68e1cd42f2f6d9d"`
[INFO] running `"docker" "rm" "-f" "5c5022650e96cb32f5cebb29e38caa2ed9dd03bc2a1d4aada68e1cd42f2f6d9d"`
[INFO] [stdout] 5c5022650e96cb32f5cebb29e38caa2ed9dd03bc2a1d4aada68e1cd42f2f6d9d
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 88cbf8bf120c7e2c31e5c1043cf17eb15fdd7fac02349f75c57d37f6e2fad006
[INFO] running `"docker" "start" "-a" "88cbf8bf120c7e2c31e5c1043cf17eb15fdd7fac02349f75c57d37f6e2fad006"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rssudoku-7b037d294f731526
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test_alternatives ... ok
[INFO] [stdout] test test_isvalid ... ok
[INFO] [stdout] test test_isvalid_block ... ok
[INFO] [stdout] test test_make_assumptions ... ok
[INFO] [stdout] test test_solve ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rssudoku-b088cb9c403caed1
[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]    Doc-tests rssudoku
[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" "88cbf8bf120c7e2c31e5c1043cf17eb15fdd7fac02349f75c57d37f6e2fad006"`
[INFO] running `"docker" "rm" "-f" "88cbf8bf120c7e2c31e5c1043cf17eb15fdd7fac02349f75c57d37f6e2fad006"`
[INFO] [stdout] 88cbf8bf120c7e2c31e5c1043cf17eb15fdd7fac02349f75c57d37f6e2fad006