Sep 10 20:09:19.785 INFO checking dlx-0.1.0 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 20:09:19.785 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 20:09:19.785 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-0/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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=1000" "-e" "CMD=cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 20:09:20.034 INFO blam! 728a40d02df0eda3d322a2b039c9a648b09f021d3d570edc22600895da3eaefd
Sep 10 20:09:20.036 INFO running `"docker" "start" "-a" "728a40d02df0eda3d322a2b039c9a648b09f021d3d570edc22600895da3eaefd"`
Sep 10 20:09:21.011 INFO kablam! usermod: no changes
Sep 10 20:09:21.045 INFO kablam!     Checking dlx v0.1.0 (file:///source)
Sep 10 20:09:21.738 INFO kablam! warning: doc comment not used by rustdoc
Sep 10 20:09:21.738 INFO kablam!   --> examples/sudoku.rs:91:9
Sep 10 20:09:21.738 INFO kablam!    |
Sep 10 20:09:21.738 INFO kablam! 91 |         /// Convert the rows from the exact cover matrix into a
Sep 10 20:09:21.738 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 20:09:21.738 INFO kablam!    |
Sep 10 20:09:21.738 INFO kablam!    = note: #[warn(unused_doc_comments)] on by default
Sep 10 20:09:21.738 INFO kablam! 
Sep 10 20:09:21.832 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
Sep 10 20:09:21.835 INFO kablam! su: No module specific data is present
Sep 10 20:09:22.536 INFO running `"docker" "rm" "-f" "728a40d02df0eda3d322a2b039c9a648b09f021d3d570edc22600895da3eaefd"`
Sep 10 20:09:22.608 INFO blam! 728a40d02df0eda3d322a2b039c9a648b09f021d3d570edc22600895da3eaefd