Aug 02 04:27:52.771 INFO checking merkle_test-0.1.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 04:27:52.771 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:27:52.771 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:27:52.771 INFO running `"docker" "create" "-v" "/tmp/crater.8pPtaVLMLleJ:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2+tmplazy:/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 02 04:27:53.038 INFO blam! 2c8b644ab7adcab9ae422931fd13ec477dbc0f6185c2ab954ef1331c68a6e485
Aug 02 04:27:53.040 INFO running `"docker" "start" "-a" "2c8b644ab7adcab9ae422931fd13ec477dbc0f6185c2ab954ef1331c68a6e485"`
Aug 02 04:27:54.154 INFO kablam!     Checking merkle_test v0.1.1 (file:///source)
Aug 02 04:27:56.304 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:27:56.304 INFO kablam!  --> benches/main.rs:1:1
Aug 02 04:27:56.304 INFO kablam!   |
Aug 02 04:27:56.304 INFO kablam! 1 | #![feature(test)]
Aug 02 04:27:56.304 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 04:27:56.304 INFO kablam! 
Aug 02 04:27:56.305 INFO kablam! error: aborting due to previous error
Aug 02 04:27:56.305 INFO kablam! 
Aug 02 04:27:56.305 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:27:56.312 INFO kablam! error: Could not compile `merkle_test`.
Aug 02 04:27:56.312 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 04:27:56.548 INFO kablam! error: build failed
Aug 02 04:27:56.551 INFO kablam! su: No module specific data is present
Aug 02 04:27:57.281 INFO running `"docker" "rm" "-f" "2c8b644ab7adcab9ae422931fd13ec477dbc0f6185c2ab954ef1331c68a6e485"`
Aug 02 04:27:57.448 INFO blam! 2c8b644ab7adcab9ae422931fd13ec477dbc0f6185c2ab954ef1331c68a6e485