Sep 01 06:09:56.419 INFO checking dlx-0.1.0 against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Sep 01 06:09:56.419 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Sep 01 06:09:56.419 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-1/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 06:09:56.614 INFO blam! cd3e22a4506a5d66c64324f3016e1da9190be3bd7c245bb480861a323dc95526
Sep 01 06:09:56.616 INFO running `"docker" "start" "-a" "cd3e22a4506a5d66c64324f3016e1da9190be3bd7c245bb480861a323dc95526"`
Sep 01 06:09:57.359 INFO kablam!     Checking dlx v0.1.0 (file:///source)
Sep 01 06:09:58.579 INFO kablam! warning: doc comment not used by rustdoc
Sep 01 06:09:58.579 INFO kablam!   --> examples/sudoku.rs:91:9
Sep 01 06:09:58.579 INFO kablam!    |
Sep 01 06:09:58.579 INFO kablam! 91 |         /// Convert the rows from the exact cover matrix into a
Sep 01 06:09:58.579 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 01 06:09:58.579 INFO kablam!    |
Sep 01 06:09:58.579 INFO kablam!    = note: #[warn(unused_doc_comments)] on by default
Sep 01 06:09:58.579 INFO kablam! 
Sep 01 06:09:58.738 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.39s
Sep 01 06:09:58.741 INFO kablam! su: No module specific data is present
Sep 01 06:09:59.257 INFO running `"docker" "rm" "-f" "cd3e22a4506a5d66c64324f3016e1da9190be3bd7c245bb480861a323dc95526"`
Sep 01 06:09:59.371 INFO blam! cd3e22a4506a5d66c64324f3016e1da9190be3bd7c245bb480861a323dc95526