Aug 01 21:07:13.151 INFO checking sudoku-0.6.2 against 1.27.2 for lazy_static-1
Aug 01 21:07:13.151 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:07:13.151 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:07:13.151 INFO running `"docker" "create" "-v" "/tmp/crater.xYLnTJt1SA6i:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-5/1.27.2:/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" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 01 21:07:13.394 INFO blam! fa234adcef3fa5bedadfc5a5bd8cd937ac53c9a51a2a2f07608f49f49d9b1f44
Aug 01 21:07:13.397 INFO running `"docker" "start" "-a" "fa234adcef3fa5bedadfc5a5bd8cd937ac53c9a51a2a2f07608f49f49d9b1f44"`
Aug 01 21:07:14.302 INFO kablam!     Checking sudoku v0.6.2 (file:///source)
Aug 01 21:07:17.202 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:07:17.202 INFO kablam!  --> benches/lib.rs:1:1
Aug 01 21:07:17.202 INFO kablam!   |
Aug 01 21:07:17.202 INFO kablam! 1 | #![feature(test)]
Aug 01 21:07:17.202 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 21:07:17.202 INFO kablam! 
Aug 01 21:07:17.202 INFO kablam! error: aborting due to previous error
Aug 01 21:07:17.202 INFO kablam! 
Aug 01 21:07:17.202 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:07:17.210 INFO kablam! error: Could not compile `sudoku`.
Aug 01 21:07:17.210 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:07:17.610 INFO kablam! error: build failed
Aug 01 21:07:17.611 INFO kablam! su: No module specific data is present
Aug 01 21:07:18.165 INFO running `"docker" "rm" "-f" "fa234adcef3fa5bedadfc5a5bd8cd937ac53c9a51a2a2f07608f49f49d9b1f44"`
Aug 01 21:07:18.314 INFO blam! fa234adcef3fa5bedadfc5a5bd8cd937ac53c9a51a2a2f07608f49f49d9b1f44