[INFO] crate dlx 0.1.0 is already in cache
[INFO] extracting crate dlx 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/dlx/0.1.0
[INFO] extracting crate dlx 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/dlx/0.1.0
[INFO] validating manifest of dlx-0.1.0 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 dlx-0.1.0 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 dlx-0.1.0
[INFO] finished frobbing dlx-0.1.0
[INFO] frobbed toml for dlx-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/dlx/0.1.0/Cargo.toml
[INFO] started frobbing dlx-0.1.0
[INFO] finished frobbing dlx-0.1.0
[INFO] frobbed toml for dlx-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/dlx/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing dlx-0.1.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/dlx/0.1.0:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 00ca6d2685d77edaf38076c508825f68a8f5f5f3bc0ee4448520b8c54d1eccac
[INFO] running `"docker" "start" "-a" "00ca6d2685d77edaf38076c508825f68a8f5f5f3bc0ee4448520b8c54d1eccac"`
[INFO] [stderr]    Compiling dlx v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "00ca6d2685d77edaf38076c508825f68a8f5f5f3bc0ee4448520b8c54d1eccac"`
[INFO] running `"docker" "rm" "-f" "00ca6d2685d77edaf38076c508825f68a8f5f5f3bc0ee4448520b8c54d1eccac"`
[INFO] [stdout] 00ca6d2685d77edaf38076c508825f68a8f5f5f3bc0ee4448520b8c54d1eccac
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/dlx/0.1.0:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2b89e4b7b7dc1e68ece51c3bbc2a8761425593b0c68cd1c160a3ef2664aa38c6
[INFO] running `"docker" "start" "-a" "2b89e4b7b7dc1e68ece51c3bbc2a8761425593b0c68cd1c160a3ef2664aa38c6"`
[INFO] [stderr]    Compiling dlx v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> examples/sudoku.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 | /         /// Convert the rows from the exact cover matrix into a
[INFO] [stderr] 92 | |         /// standard sudoku grid.
[INFO] [stderr]    | |_________________________________^
[INFO] [stderr] 93 |           let mut grid = vec![b'0'; SIZE_SQ];
[INFO] [stderr]    |           ----------------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "2b89e4b7b7dc1e68ece51c3bbc2a8761425593b0c68cd1c160a3ef2664aa38c6"`
[INFO] running `"docker" "rm" "-f" "2b89e4b7b7dc1e68ece51c3bbc2a8761425593b0c68cd1c160a3ef2664aa38c6"`
[INFO] [stdout] 2b89e4b7b7dc1e68ece51c3bbc2a8761425593b0c68cd1c160a3ef2664aa38c6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/dlx/0.1.0:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 1fe1cb0cec4ca4fa121fc4b87fbaff3ae1fbae1cb9565da529602d7fc5d2ddad
[INFO] running `"docker" "start" "-a" "1fe1cb0cec4ca4fa121fc4b87fbaff3ae1fbae1cb9565da529602d7fc5d2ddad"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dlx-9aeed3f7d8874450
[INFO] [stderr]    Doc-tests dlx
[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" "1fe1cb0cec4ca4fa121fc4b87fbaff3ae1fbae1cb9565da529602d7fc5d2ddad"`
[INFO] running `"docker" "rm" "-f" "1fe1cb0cec4ca4fa121fc4b87fbaff3ae1fbae1cb9565da529602d7fc5d2ddad"`
[INFO] [stdout] 1fe1cb0cec4ca4fa121fc4b87fbaff3ae1fbae1cb9565da529602d7fc5d2ddad